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BIP-322 is a Bitcoin standard for signing arbitrary messages with a Bitcoin address. It lets a wallet prove ownership of an address without making an on-chain transaction, which is useful for authentication, access control, and verifying wallet ownership off-chain.

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Verify BIP-322 signature

Available on: Basic, Pro, Dedicated 
GET https://api.bestinslot.xyz/v3/bip322/verify
Verifies a BIP-322 signature and returns whether it is valid for the given address and message.

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Parameters

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address
string
required
The Bitcoin address of the signer.
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signature_b64
string
required
The signature, base64-encoded.
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message_b64
string
required
The signed message, base64-encoded.

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Example

curl "https://api.bestinslot.xyz/v3/bip322/verify?address=bc1puhgw5ftrcnzfkkzrmzw8cuwmejjzaf5y2ql06cdrn002095dw8fs803glh&signature_b64=AUEde3at2iDQWz5VrXMxeOv8uIwTOlONPoRsO8wmA4iXz5ssIHLXxDP3fjVkb%2Fyp0pxjgwamKq1oe15fSV6wAOzUAQ%3D%3D&message_b64=bGlzdGVuaW5nIHRvIHN0YXJzIGJ5IHRoZSB4eA%3D%3D"

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Response

{
    "data": true,
    "block_height": 799062
}
data is true if the signature is valid, and false otherwise.