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 0xd7f4e4ec7bfb0e8c4fc896f692f2434ac519312243176312cdf3b34f3c4db3f3. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0714ef7-b09c-422b-8d3a-8fcdcda3ddd7.json and https://artists.proofprofile.net/proofs/artist/b0714ef7-b09c-422b-8d3a-8fcdcda3ddd7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In the Shadow of Our Pale Companion (For Solo Guitar)