Opoku is an Akan given name and a surname. Notable people with the name include: Surname Aaron Opoku-Tiawiah (or Aaron Opoku) (born 1999), German footballer Colleen Opoku Amuaben (born 1960), gen
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 0xfe9c5e0e074fa692917641c829486d2a5e5b972150a87f03555a596146bd9b2e. 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/655cc73f-d073-48d9-bd6f-f4c326f83d5a.json and https://artists.proofprofile.net/proofs/artist/655cc73f-d073-48d9-bd6f-f4c326f83d5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).