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 0x02bf93155cd71f11b21fd3dacefa0a34f8e91ea07b88ea37b12802aff30e4151. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c7663c31-e70a-4f97-b961-7cba42685702.json and https://artists.proofprofile.net/proofs/artist/c7663c31-e70a-4f97-b961-7cba42685702.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Country Karaoke Mega Hits Now! - Summer 2012
Today's Americana Country Folk, Vol. 1 (A Selection of Independent Country Folk Artists)