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 0x6730169d24acac2c9184abcd82af1b3a9eb6435723c990f3be6b2daa45cc3aad. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59eb5eff-1d69-4988-b3dd-265f965131ed.json and https://artists.proofprofile.net/proofs/artist/59eb5eff-1d69-4988-b3dd-265f965131ed.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
T.M.N.D. (The Metal Never Dies) [Radio Edit]
A Very daMFmastermind Christmas (Radio Edit)
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 0x5889a15764b6594261c7a00724115fee5d5d888507b93624ff616c43e8cfcd6f. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZHN72510475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505438d02c87853699d1cb5d95249e90005894bf079075c737d2ada21e656a7. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHN72510476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b3d13ebbad213ab085b38134d3144a2b09bff217c170229d68202d6ed65c9b. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/QZHN72510477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7ac72eeb3f9f984bad710d35a8bed077d632a7dde85e1614bbab2445a5bee6. 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/QZHN72510478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cffc45df4a45aa8423ceea81afc94c9540c009d2b7c03400d9597842e7a699. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZHN72510479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d1b20e23ace0b87f60b52a0f8d1c05d2b1475a1e9b6d52dcad846172231144. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZHN72510480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2945e1a6e810e99b55010f758617dcd60ec82d16efd2c3debd469a4717eb463c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:21:31Z), 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/QZHN72510481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2cf31b4a55b51ee69ad5f80ac4b9a3b4e30a278c0eb66d1f98119f513f38ca. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZHN72510482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f428bf70b019f3c918b927d377663b97ffaff9aa72177f0ca31054feaba3b7. 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/QZTAS2548584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33fa6a3e8aa4aa4e70a18998c2ae79ca6dd777554b567bd2d431bd32c107e80. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:53:16Z), 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/QZTAS2548588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afcdd03db27c7367c6b252bb978980660e0502501d3a8f0e98f42d889f81dba. 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/QZTAS2548589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165c1a4c625456f378dd90e52c37fbb907d57f1ad32aa6805255b21c25de9e97. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTAS2548591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a340a15a83cd870c676b34ab6a7f1b78e6bc75a62d3d9ab5e6d0b9455599fda. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTAS2548592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2e366689de7c61691cb2a255385e5bc9ba92857c100025ea56fb35bab453ba. 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/QZTAS2548593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ecd1e13168c9029047aa6995e274e39265c24ee280974b62474c3e9a56fa2. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:19:16Z), 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/QZTAS2548594.
Feel My Pain (Bonus Track) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d57a11649b2ce3fe0134ea9fef1d3ee4756f269ec69dfa018bafe03e41f8bd5. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/QZTAS2548595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c65c87566025129e6b6360e178530475928d91ffa720eaeb5f3ad2d7907533b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTAS2596046.