diff --git a/Makefile b/Makefile
index 4b47649a20..5f637052c4 100644
--- a/Makefile
+++ b/Makefile
@@ -7,7 +7,7 @@ CONFIG_FILE?=config-files/config.yaml
 export OPERATOR_ADDRESS ?= $(shell yq -r '.operator.address' $(CONFIG_FILE))
 AGG_CONFIG_FILE?=config-files/config-aggregator.yaml
 
-OPERATOR_VERSION=v0.15.0
+OPERATOR_VERSION=v0.15.1
 EIGEN_SDK_GO_VERSION_TESTNET=v0.2.0-beta.1
 EIGEN_SDK_GO_VERSION_MAINNET=v0.1.13
 
@@ -20,8 +20,8 @@ ifeq ($(OS),Darwin)
 endif
 
 ifeq ($(OS),Linux)
-	export LD_LIBRARY_PATH+=$(CURDIR)/operator/risc_zero/lib
-	OPERATOR_FFIS=$(CURDIR)/operator/risc_zero/lib
+	export LD_LIBRARY_PATH+=$(CURDIR)/operator/risc_zero/lib:$(CURDIR)/operator/sp1/lib
+	OPERATOR_FFIS=$(CURDIR)/operator/risc_zero/lib:$(CURDIR)/operator/sp1/lib
 endif
 
 ifeq ($(OS),Linux)
diff --git a/batcher/Cargo.lock b/batcher/Cargo.lock
index 0d7afdb2df..71f9d4c566 100644
--- a/batcher/Cargo.lock
+++ b/batcher/Cargo.lock
@@ -72,7 +72,7 @@ dependencies = [
 
 [[package]]
 name = "aligned"
-version = "0.15.0"
+version = "0.15.1"
 dependencies = [
  "aligned-sdk",
  "clap",
diff --git a/batcher/aligned-batcher/src/main.rs b/batcher/aligned-batcher/src/main.rs
index 089d5c0abf..4cdcad3566 100644
--- a/batcher/aligned-batcher/src/main.rs
+++ b/batcher/aligned-batcher/src/main.rs
@@ -10,10 +10,10 @@ use aligned_batcher::{types::errors::BatcherError, Batcher};
 /// Batcher main flow:
 /// There are two main tasks spawned: `listen_connections` and `listen_new_blocks`
 /// * `listen_connections` waits for websocket connections and adds verification data sent by clients
-///    to the batch.
+///   to the batch.
 /// * `listen_new_blocks` waits for new blocks and when one is received, checks if the conditions are met
-///    the current batch to be submitted. In other words, this task is the one that controls when a batch
-///    is to be posted.
+///   the current batch to be submitted. In other words, this task is the one that controls when a batch
+///   is to be posted.
 #[derive(Parser)]
 #[command(name = "Aligned Batcher")]
 #[command(about = "An application with server and client subcommands", long_about = None)]
diff --git a/batcher/aligned-batcher/src/types/batch_queue.rs b/batcher/aligned-batcher/src/types/batch_queue.rs
index 5c2056eadb..9cf5dcbd87 100644
--- a/batcher/aligned-batcher/src/types/batch_queue.rs
+++ b/batcher/aligned-batcher/src/types/batch_queue.rs
@@ -152,7 +152,7 @@ pub(crate) fn calculate_batch_size(batch_queue: &BatchQueue) -> Result<usize, Ba
 /// 1. Traverse each batch priority queue, starting from the one with minimum max fee.
 /// 2. Calculate the `fee_per_proof` for the whole batch and compare with the `max_fee` of the entry.
 /// 3. If `fee_per_proof` is less than the `max_fee` of the current entry, submit the batch. If not, pop this entry
-///     from the queue. then repeat step 1.
+///    from the queue. then repeat step 1.
 ///
 /// Returns the finalized batch.
 pub(crate) fn try_build_batch(
diff --git a/batcher/aligned-sdk/src/sdk.rs b/batcher/aligned-sdk/src/sdk.rs
index 833df6f261..31e14bbcd4 100644
--- a/batcher/aligned-sdk/src/sdk.rs
+++ b/batcher/aligned-sdk/src/sdk.rs
@@ -49,16 +49,18 @@ use std::io::Write;
 use std::path::PathBuf;
 
 /// Submits multiple proofs to the batcher to be verified in Aligned and waits for the verification on-chain.
+///
 /// # Arguments
 /// * `eth_rpc_url` - The URL of the Ethereum RPC node.
-/// * `chain` - The chain on which the verification will be done.
+/// * `network` - The network on which the verification will be done.
 /// * `verification_data` - An array of verification data of each proof.
-/// * `max_fees` - An array of the maximum fee that the submitter is willing to pay for each proof verification.
+/// * `max_fee` - The maximum fee that the submitter is willing to pay for the verification for each proof.
 /// * `wallet` - The wallet used to sign the proof.
 /// * `nonce` - The nonce of the submitter address. See [`get_nonce_from_ethereum`] or [`get_nonce_from_batcher`].
-/// * `payment_service_addr` - The address of the payment service contract.
+///
 /// # Returns
 /// * An array of aligned verification data obtained when submitting the proof.
+///
 /// # Errors
 /// * `MissingRequiredParameter` if the verification data vector is empty.
 /// * `ProtocolVersionMismatch` if the version of the SDK is lower than the expected one.
@@ -109,19 +111,21 @@ pub async fn submit_multiple_and_wait_verification(
 }
 
 /// Returns the estimated `max_fee` depending on the batch inclusion preference of the user, computed based on the current gas price, and the number of proofs in a batch.
-/// NOTE: The `max_fee` is computed from an rpc nodes max priority gas price.
+/// NOTE: The `max_fee` is computed from a rpc node's max priority gas price.
 /// To estimate the `max_fee` of a batch we compute it based on a batch size of 1 (Instant), 10 (Default), or a user supplied `number_proofs_in_batch` (Custom).
 /// The `max_fee` estimates therefore are:
-/// * `Default`: Specifies a `max_fee` equivalent to the cost of paying for one proof within a batch of 10 proofs ie. 1 / 10 proofs.
-///        This estimates a default `max_fee` the user should specify for including there proof within the batch.
+/// * `Default`: Specifies a `max_fee` equivalent to the cost of paying for one proof within a batch of 10 proofs i.e. 1 / 10 proofs.
+///   This estimates a default `max_fee` the user should specify for including there proof within the batch.
 /// * `Instant`: Specifies a `max_fee` equivalent to the cost of paying for an entire batch ensuring the user's proof is included instantly assuming the proof is not competing with others for inclusion.
 /// * `Custom (number_proofs_in_batch)`: Specifies a `max_fee` equivalent to the cost of paying 1 proof / `number_proofs_in_batch` allowing the user a user to estimate the `max_fee` precisely based on the `number_proofs_in_batch`.
 ///
 /// # Arguments
 /// * `eth_rpc_url` - The URL of the Ethereum RPC node.
-/// * `estimate_type` - Enum specifying the type of price estimate:  Default, Instant. Custom(usize)
+/// * `fee_estimation_type` - Enum specifying the type of price estimate:  Default, Instant. Custom(usize)
+///
 /// # Returns
 /// The estimated `max_fee` in gas for a proof based on the users `FeeEstimateType` as a `U256`.
+///
 /// # Errors
 /// * `EthereumProviderError` if there is an error in the connection with the RPC provider.
 /// * `EthereumGasPriceError` if there is an error retrieving the Ethereum gas price.
@@ -144,12 +148,16 @@ pub async fn estimate_fee(
 
 /// Returns the `fee_per_proof` based on the current gas price for a batch compromised of `num_proofs_per_batch`
 /// i.e. (1 / `num_proofs_per_batch`).
-// NOTE: The `fee_per_proof` is computed from an rpc nodes max priority gas price.
+///
+/// NOTE: The `fee_per_proof` is computed from a rpc node's max priority gas price.
+///
 /// # Arguments
 /// * `eth_rpc_url` - The URL of the users Ethereum RPC node.
-/// * `num_proofs_per_batch` - number of proofs within a batch.
+/// * `num_proofs_in_batch` - number of proofs within a batch.
+///
 /// # Returns
 /// * The fee per proof of a batch as a `U256`.
+///
 /// # Errors
 /// * `EthereumProviderError` if there is an error in the connection with the RPC provider.
 /// * `EthereumGasPriceError` if there is an error retrieving the Ethereum gas price.
@@ -195,14 +203,17 @@ async fn fetch_gas_price(
 }
 
 /// Submits multiple proofs to the batcher to be verified in Aligned.
+///
 /// # Arguments
 /// * `network` - The network on which the verification will be done.
 /// * `verification_data` - An array of verification data of each proof.
-/// * `max_fees` - An array of the maximum fee that the submitter is willing to pay for each proof verification.
+/// * `max_fee` - The maximum fee that the submitter is willing to pay for the verification for each proof.
 /// * `wallet` - The wallet used to sign the proof.
 /// * `nonce` - The nonce of the submitter address. See [`get_nonce_from_ethereum`] or [`get_nonce_from_batcher`].
+///
 /// # Returns
 /// * An array of aligned verification data obtained when submitting the proof.
+///
 /// # Errors
 /// * `MissingRequiredParameter` if the verification data vector is empty.
 /// * `ProtocolVersionMismatch` if the version of the SDK is lower than the expected one.
@@ -307,16 +318,18 @@ async fn _submit_multiple(
 }
 
 /// Submits a proof to the batcher to be verified in Aligned and waits for the verification on-chain.
+///
 /// # Arguments
 /// * `eth_rpc_url` - The URL of the Ethereum RPC node.
-/// * `chain` - The chain on which the verification will be done.
+/// * `network` - The network on which the verification will be done.
 /// * `verification_data` - The verification data of the proof.
 /// * `max_fee` - The maximum fee that the submitter is willing to pay for the verification.
 /// * `wallet` - The wallet used to sign the proof.
 /// * `nonce` - The nonce of the submitter address. See [`get_nonce_from_ethereum`] or [`get_nonce_from_batcher`].
-/// * `payment_service_addr` - The address of the payment service contract.
+///
 /// # Returns
 /// * The aligned verification data obtained when submitting the proof.
+///
 /// # Errors
 /// * `MissingRequiredParameter` if the verification data vector is empty.
 /// * `ProtocolVersionMismatch` if the version of the SDK is lower than the expected one.
@@ -366,14 +379,17 @@ pub async fn submit_and_wait_verification(
 }
 
 /// Submits a proof to the batcher to be verified in Aligned.
+///
 /// # Arguments
 /// * `network` - The network on which the verification will be done.
 /// * `verification_data` - The verification data of the proof.
 /// * `max_fee` - The maximum fee that the submitter is willing to pay for the verification.
 /// * `wallet` - The wallet used to sign the proof.
 /// * `nonce` - The nonce of the submitter address. See [`get_nonce_from_ethereum`] or [`get_nonce_from_batcher`].
+///
 /// # Returns
 /// * The aligned verification data obtained when submitting the proof.
+///
 /// # Errors
 /// * `MissingRequiredParameter` if the verification data vector is empty.
 /// * `ProtocolVersionMismatch` if the version of the SDK is lower than the expected one.
@@ -411,13 +427,15 @@ pub async fn submit(
 }
 
 /// Checks if the proof has been verified with Aligned and is included in the batch.
+///
 /// # Arguments
 /// * `aligned_verification_data` - The aligned verification data obtained when submitting the proofs.
-/// * `chain` - The chain on which the verification will be done.
+/// * `network` - The network on which the verification will be done.
 /// * `eth_rpc_url` - The URL of the Ethereum RPC node.
-/// * `payment_service_addr` - The address of the payment service.
+///
 /// # Returns
 /// * A boolean indicating whether the proof was verified on-chain and is included in the batch.
+///
 /// # Errors
 /// * `EthereumProviderError` if there is an error in the connection with the RPC provider.
 /// * `EthereumCallError` if there is an error in the Ethereum call.
@@ -477,11 +495,14 @@ async fn _is_proof_verified(
 }
 
 /// Returns the commitment for the verification key, taking into account the corresponding proving system.
+///
 /// # Arguments
 /// * `verification_key_bytes` - The serialized contents of the verification key.
 /// * `proving_system` - The corresponding proving system ID.
+///
 /// # Returns
 /// * The commitment.
+///
 /// # Errors
 /// * None.
 pub fn get_vk_commitment(
@@ -496,14 +517,18 @@ pub fn get_vk_commitment(
 }
 
 /// Returns the next nonce for a given address from the batcher.
+///
 /// You should prefer this method instead of [`get_nonce_from_ethereum`] if you have recently sent proofs,
 /// as the batcher proofs might not yet be on ethereum,
-/// producing an out-of-sync nonce with the payment service contract on ethereum
+/// producing an out-of-sync nonce with the payment service contract on ethereum.
+///
 /// # Arguments
-/// * `address` - The user address for which the nonce will be retrieved.
 /// * `network` - The network from which the nonce will be retrieved.
+/// * `address` - The user address for which the nonce will be retrieved.
+///
 /// # Returns
 /// * The next nonce of the proof submitter account.
+///
 /// # Errors
 /// * `EthRpcError` if the batcher has an error in the Ethereum call when retrieving the nonce if not already cached.
 pub async fn get_nonce_from_batcher(
@@ -569,11 +594,15 @@ pub async fn get_nonce_from_batcher(
 
 /// Returns the next nonce for a given address in Ethereum from aligned payment service contract.
 /// Note that it might be out of sync if you recently sent proofs. For that see [`get_nonce_from_batcher`]
+///
 /// # Arguments
 /// * `eth_rpc_url` - The URL of the Ethereum RPC node.
-/// * `address` - The user address for which the nonce will be retrieved.
+/// * `submitter_addr` - The user address for which the nonce will be retrieved.
+/// * `network` - The network from which the nonce will be retrieved.
+///
 /// # Returns
 /// * The next nonce of the proof submitter account from ethereum.
+///
 /// # Errors
 /// * `EthRpcError` if the batcher has an error in the Ethereum call when retrieving the nonce if not already cached.
 pub async fn get_nonce_from_ethereum(
@@ -600,10 +629,13 @@ pub async fn get_nonce_from_ethereum(
 }
 
 /// Returns the chain ID of the Ethereum network.
+///
 /// # Arguments
 /// * `eth_rpc_url` - The URL of the Ethereum RPC node.
+///
 /// # Returns
 /// * The chain ID of the Ethereum network.
+///
 /// # Errors
 /// * `EthereumProviderError` if there is an error in the connection with the RPC provider.
 /// * `EthereumCallError` if there is an error in the Ethereum call.
@@ -619,13 +651,16 @@ pub async fn get_chain_id(eth_rpc_url: &str) -> Result<u64, errors::ChainIdError
     Ok(chain_id.as_u64())
 }
 
-/// Funds the batcher payment service in name of the signer
+/// Funds the batcher payment service in name of the signer.
+///
 /// # Arguments
 /// * `amount` - The amount to be paid.
 /// * `signer` - The signer middleware of the payer.
 /// * `network` - The network on which the payment will be done.
+///
 /// # Returns
 /// * The receipt of the payment transaction.
+///
 /// # Errors
 /// * `SendError` if there is an error sending the transaction.
 /// * `SubmitError` if there is an error submitting the transaction.
@@ -656,12 +691,15 @@ pub async fn deposit_to_aligned(
 }
 
 /// Returns the balance of a user in the payment service.
+///
 /// # Arguments
 /// * `user` - The address of the user.
 /// * `eth_rpc_url` - The URL of the Ethereum RPC node.
 /// * `network` - The network on which the balance will be checked.
+///
 /// # Returns
 /// * The balance of the user in the payment service.
+///
 /// # Errors
 /// * `EthereumProviderError` if there is an error in the connection with the RPC provider.
 /// * `EthereumCallError` if there is an error in the Ethereum call.
@@ -691,11 +729,14 @@ pub async fn get_balance_in_aligned(
 }
 
 /// Saves AlignedVerificationData in a file.
+///
 /// # Arguments
 /// * `batch_inclusion_data_directory_path` - The path of the directory where the data will be saved.
 /// * `aligned_verification_data` - The aligned verification data to be saved.
+///
 /// # Returns
 /// * Ok if the data is saved successfully.
+///
 /// # Errors
 /// * `FileError` if there is an error writing the data to the file.
 pub fn save_response(
diff --git a/batcher/aligned/Cargo.toml b/batcher/aligned/Cargo.toml
index fecc3f7632..2227622c1a 100644
--- a/batcher/aligned/Cargo.toml
+++ b/batcher/aligned/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "aligned"
-version = "0.15.0"
+version = "0.15.1"
 edition = "2021"
 
 [dependencies]
diff --git a/docs/1_introduction/1_try_aligned.md b/docs/1_introduction/1_try_aligned.md
index 0b2a1bd729..be5635e3af 100644
--- a/docs/1_introduction/1_try_aligned.md
+++ b/docs/1_introduction/1_try_aligned.md
@@ -34,7 +34,6 @@ aligned submit \
 --proof ~/.aligned/test_files/sp1_fibonacci_4_1_3.proof \
 --vm_program ~/.aligned/test_files/sp1_fibonacci_4_1_3.elf \
 --aligned_verification_data_path ~/.aligned/aligned_verification_data \
---batcher_url wss://batcher.alignedlayer.com \
 --network holesky \
 --rpc_url https://ethereum-holesky-rpc.publicnode.com
 ```
diff --git a/docs/3_guides/0_submitting_proofs.md b/docs/3_guides/0_submitting_proofs.md
index c19e2e7b56..e3c400b9af 100644
--- a/docs/3_guides/0_submitting_proofs.md
+++ b/docs/3_guides/0_submitting_proofs.md
@@ -148,7 +148,6 @@ aligned submit \
 --proving_system SP1 \
 --proof ./scripts/test_files/sp1/sp1_fibonacci_4_1_3.proof \
 --vm_program ./scripts/test_files/sp1/sp1_fibonacci_4_1_3.elf \
---batcher_url wss://batcher.alignedlayer.com \
 --keystore_path ~/.aligned_keystore/keystore0 \
 --network holesky \
 --rpc_url https://ethereum-holesky-rpc.publicnode.com
@@ -194,7 +193,6 @@ aligned submit \
 --proof ./scripts/test_files/risc_zero/fibonacci_proof_generator/risc_zero_fibonacci_2_0.proof \
 --vm_program ./scripts/test_files/risc_zero/fibonacci_proof_generator/fibonacci_id_2_0.bin \
 --public_input ./scripts/test_files/risc_zero/fibonacci_proof_generator/risc_zero_fibonacci_2_0.pub \
---batcher_url wss://batcher.alignedlayer.com \
 --aligned_verification_data_path ~/.aligned/aligned_verification_data \
 --keystore_path ~/.aligned_keystore/keystore0 \
 --network holesky \
@@ -212,7 +210,6 @@ aligned submit \
 --proof <proof_file> \
 --public_input <public_input_file> \
 --vk <verification_key_file> \
---batcher_url wss://batcher.alignedlayer.com \
 --proof_generator_addr [proof_generator_addr] \
 --batch_inclusion_data_directory_path [batch_inclusion_data_directory_path] \
 --keystore_path <path_to_ecdsa_keystore> \
@@ -229,7 +226,6 @@ aligned submit \
 --proof ./scripts/test_files/gnark_plonk_bn254_script/plonk.proof \
 --public_input ./scripts/test_files/gnark_plonk_bn254_script/plonk_pub_input.pub \
 --vk ./scripts/test_files/gnark_plonk_bn254_script/plonk.vk \
---batcher_url wss://batcher.alignedlayer.com \
 --keystore_path ~/.aligned_keystore/keystore0 \
 --network holesky \
 --rpc_url https://ethereum-holesky-rpc.publicnode.com
@@ -242,7 +238,6 @@ aligned submit \
 --proof ./scripts/test_files/gnark_plonk_bls12_381_script/plonk.proof \
 --public_input ./scripts/test_files/gnark_plonk_bls12_381_script/plonk_pub_input.pub \
 --vk ./scripts/test_files/gnark_plonk_bls12_381_script/plonk.vk \
---batcher_url wss://batcher.alignedlayer.com \
 --keystore_path ~/.aligned_keystore/keystore0 \
 --network holesky \
 --rpc_url https://ethereum-holesky-rpc.publicnode.com
@@ -255,7 +250,6 @@ aligned submit \
 --proof ./scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_1_groth16.proof \
 --public_input ./scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_1_groth16.pub \
 --vk ./scripts/test_files/gnark_groth16_bn254_infinite_script/infinite_proofs/ineq_1_groth16.vk \
---batcher_url wss://batcher.alignedlayer.com \
 --keystore_path ~/.aligned_keystore/keystore0 \
 --network holesky \
 --rpc_url https://ethereum-holesky-rpc.publicnode.com
diff --git a/docs/3_guides/1.2_SDK_api_reference.md b/docs/3_guides/1.2_SDK_api_reference.md
index 5f9be2d0a1..c9622305a1 100644
--- a/docs/3_guides/1.2_SDK_api_reference.md
+++ b/docs/3_guides/1.2_SDK_api_reference.md
@@ -10,7 +10,7 @@ Submits a proof to the batcher to be verified and returns an aligned verificatio
 pub async fn submit(
     network: Network,
     verification_data: &VerificationData,
-    max_fee; U256,
+    max_fee: U256,
     wallet: Wallet<SigningKey>,
     nonce: U256,
 ) -> Result<AlignedVerificationData, errors::SubmitError>
@@ -54,7 +54,7 @@ Submits multiple proofs to the batcher to be verified and returns an aligned ver
 pub async fn submit_multiple(
     network: Network,
     verification_data: &[VerificationData],
-    max_fees: &[U256],
+    max_fee: U256,
     wallet: Wallet<SigningKey>,
     nonce: U256,
 ) -> Result<Vec<AlignedVerificationData>, errors::SubmitError>
@@ -64,10 +64,9 @@ pub async fn submit_multiple(
 
 - `network` - The network on which the proof will be submitted (`devnet | holesky | mainnet`)
 - `verification_data` - A verification data array.
-- `max_fees` - A max fee array.
+- `max_fee` - The maximum fee that the submitter is willing to pay for the verification for each proof.
 - `wallet` - The wallet used to sign the proof. Should be using correct chain id. See `get_chain_id`.
 - `nonce` - The nonce of the submitter address. See `get_nonce_from_ethereum`.
-- `NotAContract(address)` if you are trying to send to an address that is not a contract. This generally occurs if you have misconfigured the `environment` parameter.
 
 #### Returns
 
@@ -88,7 +87,6 @@ pub async fn submit_multiple(
 - `ProofTooLarge` if the proof is too large.
 - `InsufficientBalance` if the sender balance is not enough or unlocked
 - `ProofQueueFlushed` if there is an error in the batcher and the proof queue is flushed.
-- `NotAContract(address)` if you are trying to send to an address that is not a contract. This generally occurs if you have misconfigured the `environment` parameter.
 - `GenericError` if the error doesn't match any of the previous ones.
 
 ### `submit_and_wait_verification`
@@ -235,8 +233,8 @@ pub async fn get_nonce_from_ethereum(
 #### Arguments
 
 - `eth_rpc_url` - The URL of the Ethereum RPC node.
-- `submitter_addr` - The address of the proof submitter for which the nonce will be retrieved.
-- `network` - The network on which the proof will be submitted
+- `submitter_addr` - The user address for which the nonce will be retrieved.
+- `network` - The network from which the nonce will be retrieved.
 
 #### Returns
 
@@ -244,9 +242,7 @@ pub async fn get_nonce_from_ethereum(
 
 #### Errors
 
-- `EthereumProviderError` if there is an error in the connection with the RPC provider.
-- `EthereumCallError` if there is an error in the Ethereum call.
-- `NotAContract(address)` if you are trying to send to an address that is not a contract. This generally occurs if you have misconfigured the `environment` parameter.
+- `EthRpcError` if the batcher has an error in the Ethereum call when retrieving the nonce if not already cached.
 
 ### `get_nonce_from_batcher`
 
@@ -263,7 +259,6 @@ pub async fn get_nonce_from_batcher(
 ```
 #### Arguments
 
-
 - `network` - The network from which the nonce will be retrieved.
 - `address` - The user address for which the nonce will be retrieved.
 
@@ -277,12 +272,14 @@ pub async fn get_nonce_from_batcher(
 
 ### `get_chain_id`
 
-Returns the chain id for a given rpc url.
+Returns the chain ID for a given rpc url.
 
-Should be used before submitting proofs to the batcher. Wallet chain id needs to be set with:
+Should be used before submitting proofs to the batcher.
 
 ```rust
-wallet = wallet.with_chain_id(chain_id);
+pub async fn get_chain_id(
+  eth_rpc_url: &str
+) -> Result<u64, errors::ChainIdError>
 ```
 
 #### Arguments
@@ -291,13 +288,19 @@ wallet = wallet.with_chain_id(chain_id);
 
 #### Returns
 
-- `Result<U256, ChainIdError>` - The nonce to use or an error.
+- `Result<u64, ChainIdError>` - The chain ID to use or an error.
 
 #### Errors
 
 - `EthereumProviderError` if there is an error in the connection with the RPC provider.
 - `EthereumCallError` if there is an error in the Ethereum call.
 
+Wallet chain ID needs to be set with:
+
+```rust
+wallet = wallet.with_chain_id(chain_id);
+```
+
 ### `estimate_fee`
 
 Estimates the fee the user would have to pay for submitting a proof to Aligned. Depending on the
@@ -313,7 +316,7 @@ pub async fn estimate_fee(
 #### Arguments
 
 - `eth_rpc_url` - The URL of the Ethereum RPC node.
-- `estimate_type` - Enum specifying the type of price estimate:  Default, Instant. Custom(usize)
+- `fee_estimation_type` - Enum specifying the type of price estimate:  Default, Instant. Custom(usize)
 
 #### Returns
 
@@ -324,34 +327,34 @@ pub async fn estimate_fee(
 - `EthereumProviderError` if there is an error in the connection with the RPC provider.
 - `EthereumCallError` if there is an error in the Ethereum call.
 
-### `fee_per_proof`
+### `calculate_fee_per_proof_for_batch_of_size`
 
-Returns the `fee_per_proof` based on the current gas price for a batch compromised of `num_proofs_per_batch` i.e. (1 / `num_proofs_per_batch`).
+Returns the `fee_per_proof` based on the current gas price for a batch compromised of `num_proofs_per_batch`
 
 ```rust
-pub async fn fee_per_proof(
+pub async fn calculate_fee_per_proof_for_batch_of_size(
     eth_rpc_url: &str,
-    num_proofs_per_batch: usize,
-) -> Result<U256, errors::MaxFeeEstimateError>
+    num_proofs_in_batch: usize,
+) -> Result<U256, errors::FeeEstimateError>
 ```
 
 #### Arguments
 
 - `eth_rpc_url` - The URL of the users Ethereum RPC node.
-- `num_proofs_per_batch` - The number of proofs within a batch.
+- `num_proofs_in_batch` - number of proofs within a batch.
 
 #### Returns
 
-- `Result<U256, MaxFeeEstimateError>` - The fee per proof of a batch of `num_proofs_per_batch` proofs as a `U256`.
+- `Result<U256, errors::FeeEstimateError>` - The fee per proof of a batch as a `U256`.
 
 #### Errors
 
-- `EthereumProviderError` if there is an error in the connection with the RPC provider.
-- `EthereumCallError` if there is an error in the Ethereum call.
+-`EthereumProviderError` if there is an error in the connection with the RPC provider.
+-`EthereumGasPriceError` if there is an error retrieving the Ethereum gas price.
 
 ### `deposit_to_aligned`
 
-Funds the batcher payment service in name of the signer
+Funds the batcher payment service in name of the signer.
 
 ```Rust
 pub async fn deposit_to_aligned(
@@ -400,3 +403,51 @@ pub async fn get_balance_in_aligned(
 
 - `EthereumProviderError` if there is an error in the connection with the RPC provider.
 - `EthereumCallError` if there is an error in the Ethereum call.
+
+### `get_vk_commitment`
+
+Returns the commitment for the verification key, taking into account the corresponding proving system.
+
+```rust
+pub fn get_vk_commitment(
+    verification_key_bytes: &[u8],
+    proving_system: ProvingSystemId,
+) -> [u8; 32]
+```
+
+#### Arguments
+
+- `verification_key_bytes` - The serialized contents of the verification key.
+- `proving_system` - The corresponding proving system ID.
+
+#### Returns
+
+- `[u8; 32]` - The commitment.
+
+#### Errors
+
+- None.
+
+### `save_response`
+
+Saves AlignedVerificationData in a file.
+
+```rust
+pub fn save_response(
+    batch_inclusion_data_directory_path: PathBuf,
+    aligned_verification_data: &AlignedVerificationData,
+) -> Result<(), errors::FileError>
+```
+
+#### Arguments
+
+-`batch_inclusion_data_directory_path` - The path of the directory where the data will be saved.
+-`aligned_verification_data` - The aligned verification data to be saved.
+
+#### Returns
+
+- `Result<(), errors::FileError>` - Ok if the data is saved successfully.
+
+#### Errors
+
+- `FileError` if there is an error writing the data to the file.
diff --git a/docs/3_guides/1_SDK_how_to.md b/docs/3_guides/1_SDK_how_to.md
index 9c1c388f86..c80bbb3e71 100644
--- a/docs/3_guides/1_SDK_how_to.md
+++ b/docs/3_guides/1_SDK_how_to.md
@@ -12,7 +12,7 @@ To use this SDK in your Rust project, add the following to your `Cargo.toml`:
 
 ```toml
 [dependencies]
-aligned-sdk = { git = "https://github.com/yetanotherco/aligned_layer", tag="v0.15.0" }
+aligned-sdk = { git = "https://github.com/yetanotherco/aligned_layer", tag="v0.15.1" }
 ```
 
 To find the latest release tag go to [releases](https://github.com/yetanotherco/aligned_layer/releases) and copy the
@@ -51,8 +51,6 @@ Or you can make a more complex call to submit a proof:
 (code extract from [ZKQuiz example](../3_guides/2_build_your_first_aligned_application.md#app))
 
 ```rust
-const BATCHER_URL: &str = "wss://batcher.alignedlayer.com";
-
 fn main() {
     let rpc_url = args.rpc_url.clone();
     let verification_data = VerificationData {
@@ -74,7 +72,6 @@ fn main() {
 
     // Call to SDK:
     match submit_and_wait_verification(
-        BATCHER_URL,
         &rpc_url,
         Network::Holesky,
         &verification_data,
diff --git a/docs/3_guides/2_build_your_first_aligned_application.md b/docs/3_guides/2_build_your_first_aligned_application.md
index 4c859fb2f2..7832c39e4a 100644
--- a/docs/3_guides/2_build_your_first_aligned_application.md
+++ b/docs/3_guides/2_build_your_first_aligned_application.md
@@ -277,7 +277,6 @@ let nonce = get_nonce_from_ethereum(&rpc_url, wallet.address(), NETWORK)
 
 // Submit to Aligned.
 let aligned_verification_data = submit_and_wait_verification(
-    BATCHER_URL,
     &rpc_url,
     NETWORK,
     &verification_data,
diff --git a/docs/operator_guides/0_running_an_operator.md b/docs/operator_guides/0_running_an_operator.md
index 24b1581598..1af89514d6 100644
--- a/docs/operator_guides/0_running_an_operator.md
+++ b/docs/operator_guides/0_running_an_operator.md
@@ -1,7 +1,7 @@
 # Register as an Aligned operator in testnet
 
 > **CURRENT VERSION:**
-> Aligned Operator [v0.15.0](https://github.com/yetanotherco/aligned_layer/releases/tag/v0.15.0)
+> Aligned Operator [v0.15.1](https://github.com/yetanotherco/aligned_layer/releases/tag/v0.15.1)
 
 > **IMPORTANT:** 
 > You must be [whitelisted](https://docs.google.com/forms/d/e/1FAIpQLSdH9sgfTz4v33lAvwj6BvYJGAeIshQia3FXz36PFfF-WQAWEQ/viewform) to become an Aligned operator.
@@ -30,7 +30,7 @@ The list of supported strategies can be found [here](../3_guides/7_contract_addr
 To start with, clone the Aligned repository and move inside it
 
 ```bash
-git clone https://github.com/yetanotherco/aligned_layer.git --branch v0.15.0
+git clone https://github.com/yetanotherco/aligned_layer.git --branch v0.15.1
 cd aligned_layer
 ```
 
@@ -46,6 +46,7 @@ Also, you have to install the following dependencies for Linux:
 
 - pkg-config
 - libssl-dev
+- g++
 
 To install foundry, run:
 
diff --git a/docs/operator_guides/2_troubleshooting.md b/docs/operator_guides/2_troubleshooting.md
index 84513069a1..92fdfdf35b 100644
--- a/docs/operator_guides/2_troubleshooting.md
+++ b/docs/operator_guides/2_troubleshooting.md
@@ -44,3 +44,12 @@ If your operator is not showing up after 1 hour, please check the following:
 This error is caused by the operator not being able to get the RPC urls.
 
 Make sure you have configured the RPC correctly in the [config file](0_running_an_operator.md#step-3---update-the-configuration-for-your-specific-operator).
+
+### How to update Rust
+
+In case you have an unsupported version of Rust, you can update it following the [official page](https://www.rust-lang.org/tools/install)
+
+
+### Compiler family detection failed due to error: ToolNotFound: failed to find tool "c++": No such file or directory (os error 2)
+
+Run `sudo apt update && sudo apt install g++` to install the GNU C++ compiler.
diff --git a/explorer/.env.dev b/explorer/.env.dev
index 4c6f2d1748..e926401f04 100644
--- a/explorer/.env.dev
+++ b/explorer/.env.dev
@@ -30,4 +30,4 @@ BATCH_TTL_MINUTES=5
 SCHEDULED_BATCH_INTERVAL_MINUTES=10
 
 # Latest aligned release that operators should be running
-LATEST_RELEASE=v0.15.0
+LATEST_RELEASE=v0.15.1
diff --git a/explorer/.env.example b/explorer/.env.example
index 408d10962a..7df20261cd 100644
--- a/explorer/.env.example
+++ b/explorer/.env.example
@@ -28,4 +28,4 @@ BATCH_TTL_MINUTES=5
 SCHEDULED_BATCH_INTERVAL_MINUTES=360
 
 # Latest aligned release that operators should be running
-LATEST_RELEASE=v0.15.0
+LATEST_RELEASE=v0.15.1