thumb|upright=0.8|"Tesso" (鉄鼠) from the Gazu Hyakki Yagyō by Toriyama Sekien. The text on the top left reads, "it is the place known to the world where Raigō's spirit turned into a rat" (頼豪の灵（霊）鼠と化(かす
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 0xb9b239d4a414bd7ca4852d21018885434db046301a7c1842b8a102e255c410a5. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e5d192d-1e61-4147-bdc4-64fcb6304568.json and https://artists.proofprofile.net/proofs/artist/4e5d192d-1e61-4147-bdc4-64fcb6304568.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).