Carlos Manuel Correia dos Santos (; born 15 January 1958), known as Carlos Manuel, is a Portuguese retired professional footballer who played as a central midfielder, and a manager. Best known for hi
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 0x9d00ac589d0de236af248eca96ebe6a4c30d9dca70e94c9830e929aea86e5ac7. Chain 2 (Bitcoin): anchored in block 953928 (2026-06-16T10:21:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1de7f1b8-cac4-4343-90af-c3b1933ff542.json and https://artists.proofprofile.net/proofs/artist/1de7f1b8-cac4-4343-90af-c3b1933ff542.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).