Bitcoin Address Validator
Validate Bitcoin address formats and identify address types for mainnet and testnet.
Bitcoin Address Validator
Validate Bitcoin address formats and types.
₿ About Bitcoin Addresses
Bitcoin addresses are identifiers used to receive Bitcoin payments. This validator checks format and basic structure for mainnet and testnet addresses.
- Legacy P2PKH: Starts with "1" (e.g., 1A1zP1eP5...)
- Legacy P2SH: Starts with "3" (e.g., 3J98t1WpE...)
- SegWit (Bech32): Starts with "bc1" (e.g., bc1qw508d...)
- Testnet: Starts with "m", "n", "2", or "tb1"
Note: This performs format validation only. It doesn't verify if the address exists on the blockchain.
Supported Address Formats
Legacy Addresses (Base58Check)
P2PKH (Pay to Public Key Hash): Starts with 1
Example: 1A1zP1eP5QGefi2DMPTfTL5SLmv7DivfNa
Most common legacy format
P2SH (Pay to Script Hash): Starts with 3
Example: 3J98t1WpEZ73CNmQviecrnyiWrnqRhWNLy
Used for multi-signature and other scripts
SegWit Addresses (Bech32)
P2WPKH (Native SegWit): Starts with bc1, 42 characters
Example: bc1qw508d6qejxtdg4y5r3zarvary0c5xw7kv8f3t4
Lower fees, better for small transactions
*P2WSH (Native SegWit Script): Starts with bc1, 62 characters
Example: bc1qrp33g0q5c5txsp9arysrx4k6zdkfs4nce4xj0gdcccefvpysxf3qccfmv3
For complex scripts with SegWit benefits
Testnet Addresses
Testnet P2PKH: Starts with m or n
Testnet P2SH: Starts with 2
Testnet Bech32: Starts with tb1
Validation Features
Format Validation: Checks character set and structure
Checksum Verification: Validates address checksums
Type Detection: Identifies specific address type
Network Detection: Distinguishes mainnet vs testnet
Not Validated: Existence on blockchain (format only)
Common Use Cases
Payment Processing: Validate addresses before sending
Wallet Integration: Verify user-entered addresses
API Development: Input validation for Bitcoin services
Educational: Learn about Bitcoin address formats
Debugging: Troubleshoot address-related issues
Security Note
This validator only checks format and structure. It doesn't verify if an address exists on the Bitcoin blockchain or has any associated balance.
