Pedro Miguel Sousa Freitas (born 31 October 1986) is a Portuguese footballer who plays for Berço SC as a goalkeeper. Career On 26 July 2014, Freitas made his professional debut with Santa Clara in a
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 0x540c96a8b02a1b0fb2687f0d691178f9ba438d93f9da9b6c953a200783411b41. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/698642e9-39f2-4a00-a4c5-bfafa3621933.json and https://artists.proofprofile.net/proofs/artist/698642e9-39f2-4a00-a4c5-bfafa3621933.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.