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 0xc40fbeca57055b6f29426c641da0ee5773094ecd71bb1731153075acafec10e7. 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/9d59685b-ab28-4d58-b207-adcb8627af4c.json and https://artists.proofprofile.net/proofs/artist/9d59685b-ab28-4d58-b207-adcb8627af4c.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 0x8d23de8299c10e62dfa98bc186e9a8829c69ec47e4ef63253800937a81f0bf73. 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/USMO10400475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ce39ce2df8c60e9133532e3a2d8d13a170062f68f4663e18a8f651d7f55485. 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/USMO10400476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bcb2a3e6543f1bf4dc09f2f8e8fcaf5f0c723567d4d1c0bb2d94547dd16b44b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USMO17200480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4692ab8d3d1b67f5c1fc04bff0128e310bde09d0818c07be988c5fa0817809. 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/USMO10400477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af3fef457a0fa366e1812905e7f58518cf4b4efd7442867b4a4e07e0e2611a3. 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/USMO10400478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedc71b025c27857e674ccf8dabafdbe8c2c6f19f00f495c40b90d23b3dbf10f. 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/USMO10400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e4bf28aae823cf0e9114710bb7d38e67c71156228c37292d9a8a4e153932ec. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USMO17400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c19a6944bb69f5bc22ddc21cd41fdc608b241308a80b116b97c409f78e80c4. 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/USMO10110284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb8b29a0819d21d071df3956de02790cf05baf3f674a4a01e87a2954ef2eca1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USMO17400372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c06a64efd73234492c64ccf6ba08fa9ab11a01c53357babcdd57f878813a85. 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/USMO17400371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995647cacc05fbf30bb4ddcbfda637ec394641e2ee04840ae40e98e4347f65e3. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USMO17400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4c642e07936d142263699a5bf1d69df1620ec6e9aaeb8300dac672a0c526b2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USMO17400378.
Universal Sound Of The World (Your Kiss Is Sweet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3ce252ec0c6f514ed675ee6e21ee1a4271b5a8a8f9cb2ab69c0ec97d971053. 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/USMO17400379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e7b4026c3dd001af1ec9737404045873ed24965e109457e5f415f1f022d9aa. 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/USUM71202141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d63d900f084971cd969b97f4aebabd89f8c8c0ff38877770788d9d66576af34. 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/USUM70504397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1685a295cec73bc3e7fa2dc72e0bae054e376e20622048158a1cdc5cd9f12149. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USMO17782662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16672632c1f289ed59ca2cd79304ccb2ad06c7602452a15926e189ee3f9ce564. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/USMO18082747.
Set My Love In Motion (Expanded Version)
Can't Shake Your Love - Larry Levan 12" Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebade4a9fac7cd025fd0a39b7c0d3b081677920116db5bea5c260904e50e234. 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/USMO18100473.
Your Kiss Is Sweet - The Best Of Syreeta
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d1edef7fce2e7c6110815bde438fd0fde560a448ca7ef10cfd91b326fc7e6a9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/GBQRF0702537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50301c5a35cbac2524e71f44ac9b171597877755bb78620f5367405a63c835ce. 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/USMO17900482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50301c5a35cbac2524e71f44ac9b171597877755bb78620f5367405a63c835ce. 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/USMO17900482.
Big Motown Hits & Hard To Find Classics - Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50301c5a35cbac2524e71f44ac9b171597877755bb78620f5367405a63c835ce. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USMO17900482.
Hitsville USA, The Motown Collection 1972-1992
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1685a295cec73bc3e7fa2dc72e0bae054e376e20622048158a1cdc5cd9f12149. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USMO17782662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50301c5a35cbac2524e71f44ac9b171597877755bb78620f5367405a63c835ce. 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/USMO17900482.