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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 0x427f1c4aade4d81c12d361c692cd18518f586027b3c39f7e4dbd86ef357a0e32. 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/2b2c002c-969e-481b-9297-73f2facae4dc.json and https://artists.proofprofile.net/proofs/artist/2b2c002c-969e-481b-9297-73f2facae4dc.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 0x31be9b9efb05c584f21f74a167d97c153c2b3c290c93fd2d0dd1947708e7575b. 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/USSM10009530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0fc06d752bb309577b1da80fe6af706a5c374e88fd8f333e5a0ab834b32723. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USSM10009531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e619b9492f99c309b52b7b86ac247d868735aeb9475596e75a4c9e7c5994f26. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USSM11004473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac9c91cfc78346c179b0857bb0c6934993752f1c3084918aaac9367b05a6fed. 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/USSM19916974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc726513f163246cbeb95fa918181649f351f02014bb02477ae98dbd56ec340e. 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/USSM11004475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04fbf39435b36f84f54825176f1204a3222e5750451d4a5a36b60fb47d2b4152. 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/USSM11004479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0ca49de54dbe6b76f7edf41c00680dba8c8265ed4e0e36b28004277528a832. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USSM19916979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c6fe8794da2112cfe1924967b0a5609732dec56f6156212ed9680c73531069. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/USSM11003900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ee1548428d5518d0d69318ac80cf37389eae63e291e7178301ebec81774c7c. 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/USSM11003902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468d7bfaf527b328a96ef1363fc0889e1c824136c303b119423449c6acb592b8. 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/USSM10009535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47bdd507636ec7d5b8e5e96f552a917382561ff507925a05000913ff5a524e1. 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/USSM11002520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3dc78812068b2c8ade3923ccbb867573daa0e66f4e08d064e554b2899a5131. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USSM11002515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e0e5c2945c150701308f26c6b7d7a1201703291ecfedccf75484fe0827948f. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/USSM19916977.
We Don't Wanna Sit Down, We Wanna Get Down
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174309e72eedb6b73bcfbb07986f1bd5bec786a10173250d98be9efacfbc7e49. 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/USSM19916978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c0172baaf52e04464185a1ef34a40e446f2b6a9b62914c547137b6a0f66c8e. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/USSM11002505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc5c8caec8d55d838e1af974e6b628c72624dba67a56bf4856d48c57af7b13a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNMW2576111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32e6d9f23ad2ec49455010a656788cef58bb036eb7e4738c50514a87d46459. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/USSM17600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32e6d9f23ad2ec49455010a656788cef58bb036eb7e4738c50514a87d46459. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USSM17600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32e6d9f23ad2ec49455010a656788cef58bb036eb7e4738c50514a87d46459. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/USSM17600017.
Soul Culture: 01 Straight Ahead Definitive Funk Fusion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d32e6d9f23ad2ec49455010a656788cef58bb036eb7e4738c50514a87d46459. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USSM17600017.