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 0x696f5f9c179b225bc7ff3649aa9a2ec1c5a15d5bcc8373d06f1d5892b2343887. 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/3d350813-30bb-4caa-9e1d-2fedb6050049.json and https://artists.proofprofile.net/proofs/artist/3d350813-30bb-4caa-9e1d-2fedb6050049.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xab2f196268728db1a89be17daf8fab6813f593b60966108e52330864a8fff3cb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/IDB201900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf4f65ee4ae3c72c31bf80fab8ce0823162a8c049d8254a69270610c7b59387b. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/IDB201900143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d803c99d9ac975f51ef861f6749ff72a96a4c411963f14019393b3c8932b5f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IDB201900219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc716cef215b2f1ee562affa5969048431834b48aa480371c82451bb79e22adf7. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/IDB201900220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa783ffc438a98cde0d62fa81de2f2fedb1e3b25eedf69e52e1ba5f7c6f1993f. 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/IDB201900150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698687f7a96cacb88e94ccbcf0fa4f2a7b4db791fadb2565e9621e70cf3ffbc9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR2X42030531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417ba2aa6ab8077397a09515cb8f47a01c412ca50b6bf45fe39ade8d68d002ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR2X42030533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244ee274e02de7fb47636eafd981f4517b224090206516ca8339304985bba3af. 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/FR2X42030536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57117c17dd127ca006c0263e2982448fc50dce7bce56ef100a3e143dd888f14a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FR2X42030537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb4e2b9b4b63c714ed9d914698f33be81a0458d0a8106e610d9854ca5a17e32. 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/FR2X42030538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3000900a0defeddd0be229e1ba051669a7ee0b2961af30d45b84fecc41e5706c. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FR2X42030539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x277c5c1dbda0d0ab4cb1d5d820ae3532904382f5ef39ad1cef7565d4b833b57c. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/IDB201900158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9258d4ef8e34c52726c245c54dfef10b789fac49a6bcfcc449be1440307da67c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/IDB201900163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80eef196b8efa24e162dc2f0e2d75c95517861a5ecc5a7247a4d705e84141688. 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/IDB201900164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00c72889aef0c6d11507f0e4d20b4a16a26c8de78bdb15baf757b8d9ab78c56a. 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/IDB201900165.
Anggur Merah Pop Hits Tembang Kenangan, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f5cc9e6075c49afee61399212db5132ab517beb451a593997af7e9c38ee98. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/IDB201900734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73c28d71861ac6455bf90329e1ac829e282dfbe283a888dc94d51e92abaa721. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/IDB201900735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82c4dd1a02dabaf5262b7ff23ee58bbefe2c50791c9c0c186aa4824a6efd2af. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/IDB201900738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6458731a43c8947e8685d4de939715069be0393428be75176b7da0d9794c7db. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/IDB201900739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccd3f2cb6dd6e084a313fe714df80eaaea038bccaae1e0c0851cd5db13b893c. 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/IDB201900745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc35ae2337d1c826ec72624872aef74802f3794b6d946dc8f9d7da167a5f4d0. Chain 2 (Bitcoin): anchored in block 957737 (2026-07-12T18:02:09Z), 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/IDB201900746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdf2cc26bc3fed3628d5cb3368b13ee95f5d3cf4d02a873a54cb04ac7c5cfb2. 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/IDB201900748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6baac663c760482bc956761b84676f1e105385df788e984b772e271ea9108266. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/IDB201900749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ff310c11382d7df6dd1954f854cb94c331c19ce5dbc5f0a2d33dba8db9bde6. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/IDB201900750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c2b94363c725f9ff62a91ee12e1a05b6664d85fe9765a273c7723a5702b46ac. 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/FR59R2361817.