CertVera Verify Hash
https://certvera.com
● healthy
general
Verify a SHA-256 document hash on the Bitcoin blockchain. Returns OP_RETURN proof with block height, tx ID, and merkle path. POST {action: l402_timestamp_verify, hash: <sha256hex>} to certvera.com/api/l402. Free, rate-limited to 10 req/min. No account needed. -- reliability 28.0/100 per Paygent Discover
Category
general
Chains
lightning
Price
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How to call
cURL · x402-fetch / x402-axios will auto-handle 402
curl -X POST https://certvera.com/.well-known/x402.json
https://certvera.com/.well-known/x402