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 0xedc0acf84d868919410737dcf7b9cdabd271c257c1c8d922fde7d37bb6a9431d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58baed89-59ab-453c-b02b-809922ce7063.json and https://artists.proofprofile.net/proofs/artist/58baed89-59ab-453c-b02b-809922ce7063.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Xtra Mile High Club, Vol. 6: Summer in the City