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 0x3261ee19af1a264a2b53fbfda47c17e14c534f0a97cf9b7aeea1b8295c19ad7b. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97fb8a02-73a8-4fcb-963c-a43287c97710.json and https://artists.proofprofile.net/proofs/artist/97fb8a02-73a8-4fcb-963c-a43287c97710.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rollin’ (feat. midairbird) [Acoustic ver.]