toEventHash

Returns the full keccak256 hash of an event signature. This is an alias for ToSignatureHash specifically for event definitions.

Import

import "github.com/ChefBingbong/viem-go/utils/hash"

Usage

import "github.com/ChefBingbong/viem-go/utils/hash"

// Get full event hash
hash, _ := hash.ToEventHash("event Transfer(address indexed from, address indexed to, uint256 amount)")
// "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"

// Get hash as bytes
hashBytes, _ := hash.ToEventHashBytes("event Transfer(address,address,uint256)")
// []byte{0xdd, 0xf2, 0x52, ...}

Returns

• Type: (string, error) for ToEventHash, ([]byte, error) for ToEventHashBytes

The full 32-byte keccak256 hash of the event signature. ToEventHash returns a hex string with 0x prefix, ToEventHashBytes returns raw bytes.

Parameters

event (required)

• Type: string

The event definition string.

hash, _ := hash.ToEventHash("event Transfer(address,address,uint256)")
// "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"

Functions

ToEventHash

Returns the full hash as a hex string:

hash, _ := hash.ToEventHash("event Transfer(address,address,uint256)")
// "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"

ToEventHashBytes

Returns the full hash as raw 32 bytes:

hashBytes, _ := hash.ToEventHashBytes("event Transfer(address,address,uint256)")
// []byte{0xdd, 0xf2, 0x52, ...}

Notes

• This is equivalent to ToEventSelector and ToSignatureHash for event definitions
• The event signature is normalized before hashing
• This hash is used as topic0 in event logs