Troy (; /; ) or Ilion (; ) was an ancient city located in present-day Çanakkale, Turkey. It is best known as the setting for the Greek myth of the Trojan War. The archaeological site is open to the pu
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 0xa4902ace798718ed0b983e0f89efdc89d4ae5556ea61921c7ba50898f4278b2f. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a452f924-9482-4f9d-a6c0-2bd07bc3866a.json and https://artists.proofprofile.net/proofs/artist/a452f924-9482-4f9d-a6c0-2bd07bc3866a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).