João Santos may refer to: João Santos (basketball) (born 1979), Portuguese basketball player João Fernando Santos (born 1964), Portuguese Olympic rower João Santos (swimmer) (born 1964), Portugues
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d19aa7b1cdde9887d9ebb162667953f2e3543a5538fe92523417d8b07a017ee. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f8013b6d-be9e-4338-ae1d-20036543b309.json and https://artists.proofprofile.net/proofs/artist/f8013b6d-be9e-4338-ae1d-20036543b309.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).