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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7764997a7f53721396f8033448145e1e098dc857e0293d1a89f54e822827b93. Chain 2 (Bitcoin): anchored in block 953602 (2026-06-14T06:58:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f443043-f298-4514-ab0f-54f2119b4603.json and https://artists.proofprofile.net/proofs/artist/0f443043-f298-4514-ab0f-54f2119b4603.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chemical Abundance of Stars in the Halo (Cash)
Chemical Abundance of Stars In the Halo (CASH)