Validate BTC Address

WHAT IT DOES

Validate BTC Address enables you to validate Bitcoin address formats including legacy P2PKH (starting with 1), P2SH (starting with 3), and modern Bech32 (starting with bc1). Bitcoin addresses use different encoding schemes and formats depending on the address type. This tool takes a Bitcoin address string, validates its format using regular expressions, and identifies the address type. This is essential for developers, users, and anyone working with Bitcoin transactions who needs to verify that an address is correctly formatted before sending funds. The tool provides clear feedback on whether the address is valid and what type of address it is, helping prevent costly errors from invalid address formats.

HOW TO USE

Connect your wallet using the BGWallet connector (required for context). Enter a Bitcoin address in the input field—this can be a legacy P2PKH address (starting with 1), a P2SH address (starting with 3), a Bech32 address (starting with bc1), or a testnet address (starting with m or n). Click "Validate Address" to check the address format. The tool displays the address, the detected address type (P2PKH, P2SH, Bech32, Testnet, or Unknown), and whether the address is valid. The result includes a detailed breakdown showing the address and its validation status. This helps you verify that the address is correctly formatted before using it in transactions.

TECHNICAL MECHANISM

This tool implements Bitcoin address validation using regular expressions that match the standard formats for different address types. The validation process checks: (1) P2PKH addresses: start with '1', are 26-34 characters long, and use Base58Check encoding; (2) P2SH addresses: start with '3', are 26-34 characters long, and use Base58Check encoding; (3) Bech32 addresses: start with 'bc1', are 39-90 characters long, and use the Bech32 encoding format; (4) Testnet addresses: start with 'm' or 'n', are 26-34 characters long, and use Base58Check encoding. The tool uses comprehensive regular expressions to validate each format. The validation is performed locally in the browser with no data sent to external servers. The tool does not check the address's checksum or verify it against the Bitcoin network, only the format.

WHAT IT CANNOT SEE

This tool cannot verify that the address corresponds to an actual wallet or UTXO on the Bitcoin network—it only validates the format. It does not validate addresses from non-Bitcoin chains; only Bitcoin-style addresses are supported. The tool cannot detect if the address has been used or has a balance; it provides no on-chain information. It does not support address lookup or reverse resolution; it does not resolve addresses to public keys or scripts. The tool cannot verify the address's history or reputation; it does not check for scams or known malicious addresses. It does not support all address formats beyond P2PKH, P2SH, and Bech32. The tool cannot guarantee that the address is safe to send funds to based solely on format validation—always verify the address through trusted sources. The tool does not support the Bitcoin blockchain directly, as it is built on EVM infrastructure; it only provides a validation utility.

PLEASE NOTE

This tool is designed for developers and users working with Bitcoin addresses. Bitcoin addresses can be in several formats: P2PKH (legacy, starting with 1), P2SH (script hash, starting with 3), and Bech32 (SegWit, starting with bc1). The tool also supports testnet addresses (starting with m or n). The validation is performed locally in the browser and is never transmitted to external servers. The tool is read-only and does not require any on-chain interactions. Always verify the address through trusted sources before sending funds. The tool is intended for testing, development, and educational purposes. Note that this tool runs in an EVM environment and does not connect to the Bitcoin blockchain.