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 0x9301d2627d0c756dd81e0883d19adf07555c61adaae802b4153f65ed4d5cc91a. 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/c4a747d9-a19f-4293-ae68-aaa26f02a0f3.json and https://artists.proofprofile.net/proofs/artist/c4a747d9-a19f-4293-ae68-aaa26f02a0f3.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 0xb8befb9ee1ffbbb7ed681805da61e61c0185125b70664e239d67a3793a54f40d. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/GBKPL1814581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc40d08f7bf5d8a167dad1192d572c3c3f668ad51398d906dc1707a87f30a10a. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/GBKPL1824137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc12c4a9a6b37c3e00f0f86e5d69742728395cb9e54056b2606c156fb5a883c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBKPL1825488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c29571a70e606a35fef5a0dda1e7af9732732e1ec1fd40fb7eb95ca9508dab. 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/USDM32100261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb371b91d4e0b5e7c0e21cdb5338964b0d0247a8a95e8d44aa41e75c02337b1f4. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/USDM32100561.
SPLIT PERSONALITY (Jean-Michel Jarre Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcc710fe1585a84ebd879d9fb56fd90236c43f14a39ebe1358775545509f175b. 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/USDM32100661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8464e41b31527726c55a58e97442c2bb241d95e8e6c12a54140b4c9df4f9107c. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USDM32101061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279158de32fea2c69e3d7410c530f4dc1ab2d341419e19d64d8cedae95ea4b99. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDM32101063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77261b9192f7e35745c7145a673769bfdda7fd0e6e5f0713de4b0ce6007c9748. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USDM32101164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1594a0ddff236db943276ed215727a551af962e4e086261a5fc6af52ad1cf3. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USDM32101062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4728d9a3b6e44b2fac0e9842bc3773d2e3b2867937a0f44b1cfb3267f914df2. 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/USDM32101064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b19394a3475527f46f71f14380e690cabb5c7a8075dd7a962fe259894344b61. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USDM32101161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb46391d22dc2991daaf42dcbf312bfe0bea8eb1c64c0648120e8bee314072e. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USDM32101162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3fd2de3731a5bee409dd53dbb9f0d9df2a4758eaeb7995e9533fb6b9d7ee55f. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/US39N2204020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0cc7f2f66a09c34e765625a058c7129f23c806b00ebf2a38429b50b3d8c85d. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/US38Y2404233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffafd1a71e5c74294f685e528bef53c9f55dcbbf77645b1a9e0b0f7efa6d8e73. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US38Y2413870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f857f303398318092a6da9a46319a1ba583709559b0bad6895c61b16e1e5716. 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/USWB12201692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc664904c60897bdd93ee3194450ab36774b6a7dad985c5ed7aa3d8b92df957. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAUM81900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c217d0d317f67e957236acc23d537de832413d9577b6eebfb94deaf7c43414. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/CAUM82000171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5df308fbcc6d1bb6a82cf442c3ee703a698df7701f4eeec16b8ac0c27c55ace. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBTDG1301477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60b1afae97868d58b8530cf71ced7f622f172b2a91960e1616ac73a720678808. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USRC12102498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc695c7d946116c70ced56711996c5ef6ea14fede3214c931080101fec4fa197a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBKPL1947897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4c1b12bf814a5b4bff6096a710314c7c6731cecf1b5e5bdfdc02c2e362948b. 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/UK9LA2200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c96ff0b3c6bb36c80da59e65c7f4c4c82c1fdd930f00e3e77f08d9d8c2b30ce. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CAUM81900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c96ff0b3c6bb36c80da59e65c7f4c4c82c1fdd930f00e3e77f08d9d8c2b30ce. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAUM81900144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b2edd4d172495f1ad5a6fe475a00d356b636063661d17a5ea77e1f1542c509. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CAUM82100442.