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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 0xff4b69e7809ba8b1093b14df5a50fe2e748196bfc79fe9dcb6a0524217507516. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/32c96977-61c7-4769-aa38-98d4fabd6a42.json and https://artists.proofprofile.net/proofs/artist/32c96977-61c7-4769-aa38-98d4fabd6a42.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 0x94b5432c359ca6b6dab0a6af00cbcdbdf5b6e262068273afb782e3fb4e3a064f. 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/FRZ080800019.
Il était une fois... - Intro Marseille City
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e413909f6504401c886692a83db1555b1fb284d8ff2640b57754995d579ec9. 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/FRZ080800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b6bf0b89298148dc3198103e92cb7e15d9a8adfaa7e0017b65b21019e84bc. 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/FRZ050700895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67419990e0be15f3fad62cc2b70c350a4167dbbb20ccea18047fa636698f4068. 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/FRZ080800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bbe0f20a7df5835c7c0171edee81e0dea44e3d5dec48dfdd3ab6f7871d9ae7. 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/FRZ080800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc4c5a69cd41773ad529064cd404f2cd8bff64daec2376918024e3bee624de5. 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/FRZ080800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f47d40449f5a0ed9fdab749f06f5184fcbb23a450b17f2bf383d12409f49c0. 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/FRZ080800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0066630cf09f98b3e0a3d1b688924d37c4c94fc14a166099266b1272706bea. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRZ080800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c3c4fdcdb12ac93b80aaee403cb16196259368b447e9765e658e093168bf07. 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/FRZ080800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324be811d7cf50ec8b3d3a9a691e1fbfcbd01dad425a96380ba87023a25710db. 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/FRZ080800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d53613d9f68d6b86088c8c7b32610c7ee230d75f5fdee46fa59cd3fe30ab772. 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/FR8U00900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d708eb3a56acfbe8c982a0dd16632292c59f4223dc1d63516d384b417e043cd. 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/FR8U00900003.
On s'obstine (feat. Kalash L'Afro & Alonzo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1b0452038f66eeb06883742d1c268de5d36f8b6b1349045058b01fecd9bd64. 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/FR8U00900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493eb213abb8ad21924966cf51854da729537a586d6c6cc92fe2ea4666a614f4. 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/FR8U00900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01bc527d4d3be20edd3b2b8c592be83a29eeb914b0151fb5fe252f43e6463d45. 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/FR8U00900006.
Génération sacrifiée (feat. Stone Black)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fe3e94993b82ce67137977e6508f905d390baa0eefda130127ba6bf0fb9ff0c. 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/FR8U00900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd7ebf5e0a05195b65544068141d99f6886cd360c9a005fb9a503378f9d47d. 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/FR8U00900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1369748450c82109b14af97db081da8d226d13a65140a8d06bbb0e328dd4ccd3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR8U00900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b1373ded0bb9949ada92912141a85302b474bc57514e94b086b86d50f90971. 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/FR8U00900013.
C'est chaud (feat. Prince Negaa Fellaga, D2T, M.O.H & Boss One) - Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddba19a96905554fe8f26ab42b150bb82a5bf8b70d2de696b0ba87b1b5edf5bc. 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/FR8U00900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4156f53aa9f989ae0dda4a9a100455403a711d89d7041e75068e052f636a4368. 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/FRZ080201010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b0accf207b0cb39f7f52cabead6357f0f15aeded5da693f01451cc6cbcdf5a. 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/FRZ080201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ada9b0cd59cc27650ef4d2a58986971c85c121fbe33351e770411e37e069f5. 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/FRZ080201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b89220297dac08c7cf5e70b612b8cbb66d6ab56d7a1f1e1441efc42da595734. 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/FRZ080201070.
Nous contre eux II (feat. Rohff & Le Rat Luciano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed277380909efbbb87db783f3ede26b7cb38ba53ed007d92b34853ab10089667. 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/FRZ080201100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e41b2209c59c81cf0e57eb7ebcc7a2752c905d4d174b299d648eece6c4df0d. 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/FRZ080201110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c40050fd8151c9d955fc01ed4e2a500f62419d733ff42b91a622083fc2d1ee0. 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/FRZ080201120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe1d72e9a98cd80f94d86f08a046b75219b703600e182e9c1eeab0d20752dbf. 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/FRZ080201150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80af9c6daf1bc32948fffb096b5e616de60b0ba01b74537aa8bd7371791a543d. 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/FRZ080200558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c51febeb8987cb3ae9b106fea408b1267c0cf7b6e55c69e9c1b4ac26ab8fb42. 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/FRZ080200557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2942eec06ffe93d27f09a0e9ccdf9cc85c62ea4783a792dad1f0ba30d7c82dc. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:59:07Z), 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/FRZ080201050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1befa7dc3670901c10f9ab6b606a936bb5cac6472249fbd5b4875186a547ba8c. 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/QZWDW2550455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743e45209c7057ec8509055720a74b0966bc1c952bf3398c50bd95556f535ee. 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/FR8Y72300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f97d68b335150826b0231304e9eb7a955d0e08b49993aa09c3fdc12b8f2db2f. 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/FR9W12215333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5cbead3ffc5878d75f8bd70045fb3744d81fd58f8b8f89ea78b21b093d0786. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR0U92000137.
Plus que de la musique (feat. Akhenaton & Soprano) [radio edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b6bf0b89298148dc3198103e92cb7e15d9a8adfaa7e0017b65b21019e84bc. 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/FRZ050700895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2462b555aa8b4377b05216c6cb67e99d110a4ccd212a80f4b1fe057f47afe8c7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FRZ080003650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b087a4e790375bd0a13790d97d7e0e6905b83af451c2fd6b128927fd33b381. 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/FRX762125244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3f6866762e3eb493ddc5449f4a0f00804a286316c0942d18793eee83e31a57. 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/FR0U92000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4e27bde93f57bf9332a0de109ff3e14fbcfdfca9f10273fc492a03b1905ade. 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/FRX762127522.