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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7b9e34896effe583baaa085964b55831a8de58852ed02ca8c6869fb53f4fc6. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/22faeccb-af78-4ec7-88ca-2e08312351e6.json and https://artists.proofprofile.net/proofs/artist/22faeccb-af78-4ec7-88ca-2e08312351e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Who's Gonna Smoke (feat. Marvin Priest) - Single
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b7687cbc33aa93335b7ec7f82b9646b72a7847e95aee91b55681f5e9464c5d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCABY1411306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x097ef1c692ce697f32d871d34d092dbe82464198b5f76afb79c64d7ecf2ab1de. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAEF1934117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee56ef580a845bd92436f72bfdff0ee1e20930ad26dfa77cfabf9a580aa96b61. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAEF1929136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf88469c06e4dace5ca87b41980b9837eb021fb9ce8172397a04ecd3014a1900. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/TCAGO2280895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be05b83f80583bb37ffb02ee2feed4062fe58d35a0581755a823f66fdf1bb27. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNWV2342594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5034c6df7cfa53f04425014a4d94bae4f513bb2a0a5f295362c93a985d609e6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZTAS2371026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38bce988a3ecc09b28cb7b16869fd9c2d2c31ad4a547311617eb4050b33fcc6d. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZDA62385773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6891eb6fe0a87b93289b0374829d395f0cf75d4ba0793a8a536b507418e283. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6F2337265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6988cfbe1eac4b4ad8ba63cc352cb5ccf8e0a522bf3593aa1b1fffd8da0e15a8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZMEP2475773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1c824349b8cebb893af43ad87001185b55563be18f050fb8c8ea9b5484908d. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QZWFF2450644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be05b83f80583bb37ffb02ee2feed4062fe58d35a0581755a823f66fdf1bb27. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNWV2342594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c27070b9080f66a67d3da228ccd127fd5198d9f8a64438508083587c0d7332d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZK6J2537132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7290452de652db99b3272ae6dd9c370cdaae0ddd95a1d16dd0baafa19322f0cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6N22431548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd480c5eb4c71f2d55660189225a543d13b5f0f40a921831f0847c10cacd901da. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR6V80938678.