thumb|215x215px|Port of Aden from the ISS, 2016 Aden (; ; ) is an ancient port city in the southern part of the Arabian peninsula, on the north coast of the Gulf of Aden, positioned near the eastern
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 0x5665b05a8a5c0f5c22cf43feb58fd04f475f3ce12a9ca4d95eda642780acc015. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/606308dd-55a5-4ce9-a8bf-57860bf65d9b.json and https://artists.proofprofile.net/proofs/artist/606308dd-55a5-4ce9-a8bf-57860bf65d9b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).