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 0x4fc93520df591d6a4f6b2fdbd36833374cd7b5ed3c46a35830d7a9243eb5afb2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/550ae1c2-ae73-4271-9b32-648f946e25c9.json and https://artists.proofprofile.net/proofs/artist/550ae1c2-ae73-4271-9b32-648f946e25c9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lay Me Down / Like Im Gonna Loose You (Mash-Up)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c81cd30a0a444b3c7430a50137b7c0609b02b1517e8b7f8f99bdb3a737d585. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831500213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd0e16b46ea7df58d384a0b3bab8910171403344c3d077c622b97a479d9c60c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCACU1667054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee684aa9519b533053e5b326701cbd7d9a051e2a48bcd1531070da0837f76399. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:49:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZES61871544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea0df306d0e2270a6a551baff05e08877278552a2dff14c23bd49cfb157ae94. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2079650.
Lifetime (Stripped) [feat. Justin Starling]