Marcelo Bastos Ferreria (born 26 September 1965) is a Brazilian sailor and Olympic champion. He received a gold medal in the Star Class at the 1996 Summer Olympics in Atlanta with Torben Grael. He rec
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6458f6a102678fa9fabf15f9053127685b0b58ed31528c8a25fdddf1cf2e273b. 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/4ccd7102-1af5-47a3-8c41-4f6c9b96f941.json and https://artists.proofprofile.net/proofs/artist/4ccd7102-1af5-47a3-8c41-4f6c9b96f941.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).