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 0x73a9ea4290f17e6e790395df28fbfa92227171b34a7aa28629a8d93ae543f40c. 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/2dac9358-74bb-42d2-b803-82ff1afafcc6.json and https://artists.proofprofile.net/proofs/artist/2dac9358-74bb-42d2-b803-82ff1afafcc6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Timbuktu - Original Motion Picture Soundtrack
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 0x5f899de58b9d746c3e013999ba8e136b92d0cf59f786135bbdb6b355a7aea8b9. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/FR9W11417763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2f6c09e212b0911e262c52016fcfbafd1ab074917b21064a886e3b28da34e7. 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/FR9W11417766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10f367e43c985659a76bc9937fefd27980fca53d4a896756dd913731fac7fcf. 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/FR9W11417768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a761b5045fca83569b9b18d70d2916df1f8b7723815bfc7f92ac8f1a9a9be2. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/FR26F1700776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a221ffa466a3408eca714d13f06fed3ef4efcca3f8677c9f4d7cd02a9e5c030. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FR26F1700784.
La Belle et la meute (Original Motion Picture Soundtrack)
Secret of the Nile (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3531d74426cc46725912ac1684be75c38c108a1e615da491916ee159525a9353. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FR3X61800041.
Place des Victoires (Bande originale du film)
You Will Die at Twenty (Original Motion Picture Soundtrack)
Looking for Oum Kulthum (Original Motion Picture Soundtrack)
Le sommet des dieux (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3ddac4d981c4ecb7f49ac79000b0c86f149d404289f107120902368931781b. 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/FR3X62120002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f530e36fe9d26d6df0ddc5db1a7d66bc81bda18019c76839c46e5ff58f1e7c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FR3X62120003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06054f9b9d702d905c0249e96963124104c349107cc7467caaadc88b939c51a6. 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/FR3X62120004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371e8682024b90605d7a1e931810cdd862ac91d027fd175f955ba19f51829cf1. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/FR3X62120006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b707b1cd86f41f68ebdca843d8ff64a660ff69ec03d934d8a63305637ce543e. 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/FR3X62120007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac709e144f6422bdd0f99d491ac0eeebe5ca2490fe220993ad117e46847830f9. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/FR3X62120016.
The Summit of the Gods (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3ddac4d981c4ecb7f49ac79000b0c86f149d404289f107120902368931781b. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR3X62120002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69f530e36fe9d26d6df0ddc5db1a7d66bc81bda18019c76839c46e5ff58f1e7c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/FR3X62120003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8b28db07953f98454553b7db61620f51be748a9fd74c76eb4c298fc2a334b0. 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/FR3X62120005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa13f2539b415788b9fdf2c683c745b351c3d6181ce211d1b78408363f247a433. 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/FR3X62120008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586c84bc0e9041e77d2075f1ee320269507b4a3a0d15e41c384a46c6f5d32203. 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/FR3X62120010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85024f5e42535f5bd8fc7aaa5868cab326f907c335ee9c838118525e21ca8f2. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/FR3X62120011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770a6ced803e03120fef07c9b105eff0492a916aa657043dbbb0ff0857945561. 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/FR3X62120012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad40912b78fb4e359ccb90cf8b0cc2288a4a5fdb504d687ebc920db4b58c792a. 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/FR3X62120014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7d4ddccaa72f795255084ca8e914ec822c8f4448e66aedd7a2b3c642bc7340. 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/FR3X62120015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac709e144f6422bdd0f99d491ac0eeebe5ca2490fe220993ad117e46847830f9. 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/FR3X62120016.
Un homme heureux (Bande originale du film)
Les Filles d'Olfa (Bande originale du film)
Four Daughters (Original Movie Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0414b4d77452d89e2acb20b2f817255a777b7f5056c5ca0479ee69b9ca375e1b. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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/QZ8BZ2306699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bace1a2dd13e9ac38b1ec80f0ea852e5947cf5eebb5fd8e69945ae0bb1bb95b. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QZ8BZ2306715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb78307983d0b2425e45ca216838c2c80187a6d48b1e5b88ca817e0c7a9af3f. 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/QZ8BZ2306698.
Le temps d'aimer (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e82110de345b2015ca68eef1f1a60b40e188af55a70308665a95d48fd0f655d. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/FRR412306011.
La Prisonnière de Bordeaux (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c76c2d9f79d68455d942c6066cbdcbc203f7d8b63512c90c9f19d93683759e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR3X62414001.
Ni Chaînes Ni Maîtres (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738a0db0f2e09435b29d6717fae2a2d14af632eafb534122280e769805536aeb. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/FR3X62419002.
Ad Vitam (Bande originale du film Netflix)
Toutes pour une (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb2d1a81baf71a5ff4d62ab9c36aa7822f40ad15acfbf66dcdbd87fb08212ea. 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/FR3X62502001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeecfd1938991e75de736e4b930a1693995d97e58e52185ea94188dde2e37224. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/FR3X62502003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef935c7592f1e5f492e4a8f3fccefc75929b8f9373072ae9fb36f5e8c1563afb. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FR3X62502007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4c2f54e3658110a3e836a360a4882e9f0886f0db64e7d68d057a894e8cd6ce. 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/FR3X62502011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edeacf1b43469a7bc4ffc49b681332456a11b84ab5ecbf02ebf1cee7b47ca17. 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/FR3X62529007.
La petite dernière (Bande originale du film)