thumb|Image of J.C.Petit Jean-Claude Petit (born 14 November 1943) is a French composer and arranger, born in Vaires-sur-Marne. After accompanying jazzmen in his childhood, Petit went to the Conservat
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 0x14296b9b6b6d6c30f21bc0f675e926107f4c467e9113e8258d7e10d51367b68f. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a0851b56-2535-4d2f-837e-8b1a13206e51.json and https://artists.proofprofile.net/proofs/artist/a0851b56-2535-4d2f-837e-8b1a13206e51.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Jean de Florette / Manon des Sources (Bande originale des films)
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 0x2267c8203a67440a2b0cfe013e5c3fe9762a57dd7f750471c6a77c61d2596298. 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/FRZ668601010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4d34c609886d77632859bea5513af88b2202081e686ce7a22207342ff7477. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FRZ668601020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc020da21438c98c14ef687ba16655eb00e402b7d4cf6d2edae783705759b5feb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ668601030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe134d1913e7cc115bd7ab8eabb1f8f8b3c8512d9861f769d722125f30ccdd7c0. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/FRZ668601040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e74e34b30c3a4979320817bb22cb1a6c9a779bc73ad8608e951ee2262e92311. 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/FRZ668601050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e81ed5f2bb651c0315fe06f63ac9108dad23ac16480f8ffefe699ba60f0964. 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/FRZ668601060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b492a62eba6d7423d1439ead112bd95ff7caa4748e5b510b6f1a124cf012627. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/FRZ668601070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271bf05ef571120f11770519f8629b855bb46b7722664831b374aa11156f1e9b. 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/FRZ668601080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f745b1131a8a5e0d77e34e909a163ef71f6bb093a22686dc79cece86e017b43. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FRZ668601090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23037ba4cca25adbdd2db40d1adbab542d5fb6e0d00413bb603b99f37697bc9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/FRZ668601100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337588979f79146549c91c7efb827eadd01bd8aab045fccc05a0519b7e185ceb. 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/FRZ668601110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77d1ae6bfbaf3a22483350a8affc086a99c4da784f02c1cf581f71fe89f44e9. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/FRZ668601120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ffc05ba9d90045300b855dcaa333886f3fd5a2f21f5fad6232ad5dcdfbd86a. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/FRZ668601130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ee25e0f9bb366b15db77c8ade31715e680b03371b5dab0d4c1d34bf158dca9. 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/FRZ668601140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2cd9e84fd7e0cc20c3001869622c41af2ceef60141395d6f7f8e889489d36cc. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FRZ668601150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1899fa1c237e65decd8670c2afdc9aa25119b89a57b24f32d0f5be7269e310. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/FRZ668601160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1af21a0f42129daa135f7ccb3fa7de009dec452996294fc2be60f3e049ff2f6. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/FRZ668601170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449c5aaf446934ab6605ee5d32823a37318dbfea21cc594a2bb8209566e358a2. 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/FRZ668601180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08851f84028ec76c1d2da52dcf11fb532b7cedae0e131316d5fd093e29e5e81. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/FRZ668601190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17846613dea73433b5b17d052158ccc38f3c587139df29ac590a7c4f78ab8256. 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/FRZ668601200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82a19f2282d80a3996f8475f71fce9dd956b51c399a5f33485e5448baef83cbc. 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/FRZ668601210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c2a4029e8870e2d41b01f0c4320f02a1984a55b8103085f99de18296cb74e0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRZ668601220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef76d90ab91425a79aee557fb9d8617b18eae16e4c22c263fe71926245590e3. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRZ668601230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf669890fc4fdbd6a9dbcc5d69c897ae63c2eaf14d281e844a65ec4cf56b034fe. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FRZ668601240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a3410ea3b782cb242f854ea41dd459a65596512f94545058c1248f30e0cebb. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRZ668601250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31605e11f4333923513867c4072ed9eabd923f9d0a7f7311e5fd2169fbae71e. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/FRZ668601260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436e9b854f635f520f3d6f92deccbd56fc4e216fa87cf6e73a38ce9bc11b4855. 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/FRZ668601270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0450ec967467296bcc8d8f184080fdb2985f366e803c06e37d4aa412a13020. 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/FRZ668601280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee33c929e42cd4a6e658ba9057a687e93a363a3334a08a393e69ebb38f2b18a6. 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/FRZ668601290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809091e83f8c387319a151ef0ad75138acd05826e62c0f0e55ed11e95b20cc8c. 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/FRZ668601300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de5eb74f30e90651727c9ae4a5f4bcce94a76150c6f4bb1bc0435951acaa0ad. 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/FRZ668601310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b15fe6f213982208c5b1bdddeef3f5adebff25fd3e007ee4aa02529864cea1f. 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/FRZ668601320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b92713b025e7d202c11f3f323a9e2e6258e66cced285755100cb378097a781. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRZ668601330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96db4176d43a902162a4b2b56be7f07d0a21f993b8903755a846de84f7ddbd7c. 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/FRZ668601340.
Générique Fin - Thème de Jean de Florette d'après l'ouverture de "La Force du Destin" de Giuseppe Verdi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3f99becc560563641b58cbb146aa42f9a15e9fca1cd984ea160c6e6a705abb. 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/FRZ668601350.
Cyrano de Bergerac (Original Motion Picture Soundtrack)
Messieurs Les Enfants (Bande Originale du Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a205283cb5389be06b9f44ae5a5f3068096090432bee88e61e3416bf276b4ac. 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/FRE709500030.
Lumumba (Original Motion Picture Soundtrack)
Les Vivants et les morts (Bande originale de la série télévisée)
Theme (From "Cyrano de Bergerac") [arr. Michal Worek]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253d0e21672cab9b76d5112818485b9372f7f02573b0d718821f5f38dbfd3e1e. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/CH1602211118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c569078502d977eaf509b180d8ddde821ad0e51c28dd2a176aac8d43e55555. 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/GBAYC2301879.