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 0x2d495ad1e08229083cc40f13238423fcd5a38702bee3cfd57794f0930b5e3404. 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/e72bbec5-cf2b-45bb-832e-6c3beaaf0594.json and https://artists.proofprofile.net/proofs/artist/e72bbec5-cf2b-45bb-832e-6c3beaaf0594.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Greensleeves Official Dancehall Mixtape Vol. 1 - Bobby Konders / Massive B
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 0xa00c147b051b69ab40533ba077e2f6521ed8a2d49e0a2d2f9e50c82896a40564. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBBZV0354452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea5d8aacab6aff3a931503a90ec1a55a9a19578cb65ee6784539b3acd3d4158. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/GBBZV0354261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f0fab6ed488b7f5ada12ad2fe3285108b31fd7837b823c0a11f9384c3a3e34. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBBZV0354456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2630d0fa0443326f80eb25313709da6a2a823be4cde3e5c65764aa5fddb0dd. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBBZV0354457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26a366740d711bbe4aa1dc07b262e6cf1b3fb78dc3d8cf36f9f68a2a5756183. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBBZV0354264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e18a0c18104cb8aed425f63c10938463a3affd9e943656fdafcf90077c8081. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBBZV0356237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046dbe11fc3080e828dc1f45798c2097c1435e2535bc20e13ed548771c545e00. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:08:07Z), 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/GBBZV0356246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587fcf1e3898cfb483f4e5aea2d41ebf38160a8a640bd511ffa0f58309cdce1f. 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/DEN400209301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6229c28b4c0323025821a9cf85a060ef146b86c8c09de6dfa09c51d75a0cd8a7. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DEN400209308.