commitmentsToVersionedHashes

Transforms a list of KZG commitments to their versioned hashes.

Import

import "github.com/ChefBingbong/viem-go/utils/blob"
import "github.com/ChefBingbong/viem-go/utils/kzg"

Usage

import "github.com/ChefBingbong/viem-go/utils/blob"
import "github.com/ChefBingbong/viem-go/utils/kzg"

commitments, _ := blob.BlobsToCommitments(blobs, kzgImpl)

// Transform commitments to versioned hashes
versionedHashes := blob.CommitmentsToVersionedHashes(commitments, kzg.VersionedHashVersionKzg)
// [][]byte{...}

// Use default KZG version
versionedHashes = blob.CommitmentsToVersionedHashesDefault(commitments)

// Get as hex strings
hexHashes := blob.CommitmentsToVersionedHashesHex(commitments, kzg.VersionedHashVersionKzg)
// []string{"0x01...", "0x01...", ...}

Returns

• Type: [][]byte for CommitmentsToVersionedHashes, []string for CommitmentsToVersionedHashesHex

An array of versioned hashes, one for each commitment. Each hash is 32 bytes.

Parameters

commitments (required)

• Type: [][]byte for CommitmentsToVersionedHashes, []string for CommitmentsHexToVersionedHashes

The KZG commitments to transform.

commitments, _ := blob.BlobsToCommitments(blobs, kzgImpl)
versionedHashes := blob.CommitmentsToVersionedHashes(commitments, kzg.VersionedHashVersionKzg)

version (required)

• Type: byte

The version byte to use. For KZG commitments, use kzg.VersionedHashVersionKzg (0x01).

versionedHashes := blob.CommitmentsToVersionedHashes(commitments, kzg.VersionedHashVersionKzg)

Functions

CommitmentsToVersionedHashes

Transforms commitments to versioned hashes:

versionedHashes := blob.CommitmentsToVersionedHashes(commitments, kzg.VersionedHashVersionKzg)

CommitmentsToVersionedHashesDefault

Transforms commitments using the default KZG version:

versionedHashes := blob.CommitmentsToVersionedHashesDefault(commitments)

CommitmentsToVersionedHashesHex

Transforms commitments and returns hex strings:

hexHashes := blob.CommitmentsToVersionedHashesHex(commitments, kzg.VersionedHashVersionKzg)

CommitmentsHexToVersionedHashes

Transforms hex commitments to versioned hashes:

versionedHashes, _ := blob.CommitmentsHexToVersionedHashes(hexCommitments, kzg.VersionedHashVersionKzg)

CommitmentsHexToVersionedHashesHex

Transforms hex commitments and returns hex versioned hashes:

hexHashes, _ := blob.CommitmentsHexToVersionedHashesHex(hexCommitments, kzg.VersionedHashVersionKzg)

Notes

• Each versioned hash is 32 bytes (256 bits)
• The number of hashes equals the number of commitments
• Used in EIP-4844 blob transactions to reference blob commitments