Crypto Transaction Hash (Generic) Regex for Go

What this pattern does

This page provides a lightweight, single-purpose regular expression for matching crypto transaction hash (generic), ported and verified for Go. Financial data validation has zero tolerance for false negatives — a missed invalid entry can corrupt downstream calculations. The snippet below is ready to drop into your Go project — whether you're validating in a Gin handler, a gRPC service, or a command-line tool.

Go Implementation

// Crypto Transaction Hash (Generic)
// ReDoS-safe | RegexVault — Finance > Crypto

package validation

import "regexp"

var cryptoTransactionHashGenericRe = regexp.MustCompile(`^(?:0x)?[0-9a-fA-F]{64}$`)

func ValidateCryptoTransactionHashGeneric(s string) bool {
    return cryptoTransactionHashGenericRe.MatchString(s)
}

// Example
// fmt.Println(ValidateCryptoTransactionHashGeneric("0xabcdef0123456789abcdef0123456789abcdef0123456789abcdef0123456789")) // true

Test Cases

When to use this pattern

This pattern is drawn from the Finance > Crypto category and carries a ReDoS-safe certification. That matters for Go developers because Go's RE2 engine is inherently safe from catastrophic backtracking, but this pattern has been additionally verified for correctness. RegexVault audits patterns against known backtracking attack vectors, ensuring you have the necessary context before using this regex in a high-stakes production environment.

Common Pitfalls

Technical Notes

Ethereum transactions use the 0x prefix. Bitcoin transactions do not. Both produce 256-bit (64 hex chars) hashes. Solana uses Base58-encoded 64-byte hashes — use a different pattern for Solana txids.