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 0x7c4a11c280ef92e5023228df14b36e017629ce43584724d6ab1d86d87ded2874. 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/0b7e8950-e4b1-437c-82e2-4303ff984dae.json and https://artists.proofprofile.net/proofs/artist/0b7e8950-e4b1-437c-82e2-4303ff984dae.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 0x38bf1fea4851f3ea18115c9406d503c5c11f25593a2a73ea380919e242c567e5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITZ681800501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2bc13bd785b674500cd83e3a976db593e1f6f758eef29f73891438015bde18. 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/ITZ681800505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e8af61f7402f00c8bb5bdd107624c0b25a4a6e1ff979f6e63403d4b00a879b. 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/ITZ681800513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae040a3338681951e3214a7a8040ebe01e74698f5cda843297a823250d91341f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/ITZ681800507.
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
Voulez-vous multiplier avec nous par 7 : La table de multiplication en souriant (Mono Version)
Voulez-vous multiplier avec nous par 5 : La table de multiplication en souriant (Mono Version)
Voulez-vous multiplier avec nous par 2, 4, 8 : la table de multiplication en souriant (Mono Version)
Joyeuse grammaire : introduction à la grammaire pour les élèves du cours élémentaire, vol. 1 (Mono version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b164cc0a9bcbed13e45c2096ae85076cab7cb36d5a6000994696a82c5ca75ef. 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/FRX452405751.
Il Supermercato delle dittature - Sinfonica micionero remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb82a1a32ad1c59f28e47dd416c75525ece00c9d4ac69b266dc0f97a3f1c26d. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DGA052487937.
Minotauro (From "The Cage - Nella Gabbia" Soundtrack)
Minotauro - From "The Cage - Nella Gabbia" Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843e5faf9af28a5cfe360a20c9e2d2f0e12bc74e65c96c3a13d497a43225cd72. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ITC002301476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659137b3794259625aa695afa4c54aad9d0473f4fded263015bd188ea15b5c44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QMDA72327946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3099c21eec02931c0184d04b08479675508af9bba3522e47e9a633dd74a8255. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/IT1XL2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e61864f6bc1a29db6e41c27ecad4d3bb4c7bb1e1bcfb889ff379dca1ee958a2. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITDGZ2000412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa31efb83dea3f0aab08f45c4803c2f08c999c12b452368a72f1fe113987a591e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITAA52000030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24b0751c59b5c1dc1e4ad5cb654b3352f91d3b4eafa50293af40a460ca297f29. 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/ITJ791600052.
La Forza Che Scorre - Piotta & Ra-B Remix 2016
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308b8141564e07246111b81db558b0aad7dbf74e30080e1151e5ef1aaa9b5b54. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITJ791600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9ef2487e62528ef5a3d600664d3aca9d71d9cc5ceada7902de4d6a440b2b47. 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/TCAGD2228787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75f2a30ed0389c8793bfe1b63a6e9b67150b0cc525569e66b89046739486fcc. 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/QM4TX2343843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959df21602cf04763bf90fe0595317b35e2feab149f14bc8245e868b2b72aa6a. 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/ITRSE1600478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8cbefa6e9750b2d2386869e914338253a6a798c4eb25af8a980293c54c6656. 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/TCAEM1964773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6449c1bebff1573901d8b86716c0b8650c842b1dbfd0e51f0a6ff3aaa62fc47. 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/FR10S2181296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f407c0d7f49a50718c1cf22ef5d12ec34290e31b86129025a5443d1e22ce67. 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/IT1071700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ae33c6e18212fc1b915bf14b09c79441ef1655c05a115c0d5ae422aa281655. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITX480900039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b48aae0bfcea6f51e1c0df4d949635f94342385d0117532abb85b87ff5b659d. 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/TCABX1479127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3249cc85a1d498f9389b6e39fade07c5eedeb12803a2469301f596db4d485dca. 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/FRX762255299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb40901ae61733a95463a615397634284eca0265b1dccccbc80d090713d10b6. 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/ITCV32411906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f011cac58d629bbbe2b3d2e4f1a7bc56c062db0ab8e2e3119a6f8adc2dc7d0b. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ITQHV1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4b9feeba703ffa1c75ec62e6634006bfb83b92e84f03e40b86e3f10f58afb0. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/ITX480900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ddee5500634487c658882bf04dcae34941fa221b0d2a88074fe1d7f89dce3a. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/ITDF61817026.