1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb60826cb2dd3583d991e3e71a04070cd92cefed355056678e0331642fc5c2897. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff74a1de-d374-48a7-a87b-690e11cbd44f.json and https://artists.proofprofile.net/proofs/artist/ff74a1de-d374-48a7-a87b-690e11cbd44f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pale Horse: Requiem for the Darkness (The Book of Thanatos)