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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f004f3ef490467262f3f67455947bdd437801a98599f1b05af468f34d94c12b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84d01cbf-cabe-4cff-94ae-1d21042b449e.json and https://artists.proofprofile.net/proofs/artist/84d01cbf-cabe-4cff-94ae-1d21042b449e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe317ccf66bd714440d61e0b1b858e075942a24ff4bbc63ec5805c86ac44c3d46. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R1904289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1c28941437ed602bdbf943bbf223f31cbf6574ad5797599873e6a9ce5cc1d4f. 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/FR2X41947934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee9e0ef3340c5c2c3fccdb23b097c08a08b182c22ae12356ebf734c8cea8a8d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR2X41947939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f6bd579fb08fa74a84ca6f2fcca1d39ea661d4c5fa7afe2db88ca19298e85d. 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/FR2X41947941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972872dcfaf7d004796e37f41318c11847f9b4d4398f18590fa0f35516b09a7c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:37:24Z), 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/FR2X41998429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39c37189acbe8405f6f9ed5c88ed8b7cc14b40147a6e1acc8c888238ffa9036. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:36:22Z), 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/FR2X41998433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f930c76d28771f1742bd4f4782e96f9561ddb75ef600bc3dfe731de9a50856f. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USE830949109.
Canta cucul bata-l vina / La toti ni greu / La tara infloresc toti pomii (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac9e7787a59ac6e89dc228635812cce74ecec7c1fb97867ca33181abf1f2201. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZ22B2030399.
Nu-s bogat n-am avere / A crescut baiatul mamii (Medley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44cc09a394fa440927d3320c3b4e31e0606a264119552b2291b8cb51ae0fa81. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T18:11:26Z), 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/QZ22B2030396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7818db4987700c15a50f9d58adad1a8ab569f03854a5f0d895584f2ae69aae. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FR10S1981390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9823e066b4a3eb2a0e507126b91d153e1daeb9b9d95dedeb8811d7cc98031d26. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:45:05Z), 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/FR10S1981398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17beedb217e6570374c5aaca0b07a095a5ea2058f11d917d1c280a0e32c7ecaf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR10S1981403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65b859bc86a5f38c1156762c2fb57550129bd7159616c5b4713f4f4cadbffa69. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:29:01Z), 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/FR10S1981404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78357d9125c14dbb9c640a4067670ab69530eff93bd92311436e0e05b043c894. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR10S1981407.
Muzica De Petrecere Si Cantece Lautaresti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe372dcf70d9cf345e5339d6bd95abc3abe64aea9cea84d5ea4519562edfcdbe3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR2X41998487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec384f0661d8d225635f28904e148890220a76711aad51c7fbe6dc5866815cc. 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/FR2X41998489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfcdc1a526d1d018e0c53e348d0706b2f29a497399dd0db5b68e9affdb92d17. 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/FR2X41998490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765af9570b99bbc3b7671597e16a1d5378829dd1ce8e254dab6a18428df8eec7. 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/FR2X41998491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dd5bb16599d288bad9cde915e34769dbf958700eea8751d5c51a891bf31486. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2X41998492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93598f38e99727e97c59461e9e9d7e79e7d55349a4980d17c2a9be3007d0e74f. 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/DGA052005087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffe18b517661ceebf3142927f65f5b099e0f2058b11a112d2f3e207283e244a. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/DGA052005088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e5c5e1eaa7ce580fb637ead8bfb77931ab5ee270c90d604c88c03181fa0152. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DGA052005089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0486a81c52037baa607283c1d7bf06eb0d8a6df57bae1f550fcf2053f457a0f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DGA052005091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748a3809cd268b01b8b8dba6f480b52c9de5743c394cef19cbb095edf01f91e8. 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/DGA052005095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907a0e7258ef079cea3133c1097d4e96b2003eeeda80356ee302c613bf491c20. 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/FRX872506341.