Embed BIP38 On-Chain

OP_RETURN

Put BIP38 on-chain with its address.

Fund an address for the first time while embedding its BIP38 key, or embed after funding with change back to the same address.

Fund + embed

Pay the BIP38 address from another key and include that BIP38 string in OP_RETURN in the same transaction. Change returns to the funding address.

Target BIP38 key

Provide the target password (to derive the address) and/or paste the target address. At least one is required. If both are set, they must match.

Target password (optional)

Target address (optional)

Warning: If you paste an address without the password, that address must match the BIP38 key. A mismatch sends coins to the wrong place while embedding a different key’s BIP38.

Funding key (WIF or BIP38)

Funding BIP38 password

Amount to target (BTC)

Fee rate (sat/vB)

Self-embed

Spend from an already-funded BIP38 address, write the BIP38 string to OP_RETURN, and return change to the same address.

Lookup embedded BIP38

Enter a Bitcoin address to scan its transactions for BIP38 strings written to OP_RETURN by this tool.

Warning: The BIP38 string becomes permanent public blockchain data. Security depends only on password strength. Never embed an unencrypted WIF. Keys are processed in this browser; publish the hex on /publish.

Working…0%

Signed embed transaction

Txid

Raw transaction hex

Paste into /publish to broadcast.