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 0x8a99bf6b99284677aedcca8fc6ebfeed285f2d8ad15f7481998414c90cd4e93d. 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/37ae8871-1c75-4e96-9062-329a85e0fd44.json and https://artists.proofprofile.net/proofs/artist/37ae8871-1c75-4e96-9062-329a85e0fd44.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ils cueillent des jonquilles (Micro Siestes Acoustiques)
Prendre Soin (Micro Siestes Acoustiques)
Je me suis fais tout petit (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 0x1c72a091cc7b6ecffdf89567f284681362992e0e87dbe6985313b00ac7b0d55e. 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/FR79W1200340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a75d187830546358e335b1b7a056560cdabaa20d3d71c867b5567a0d0dab457. 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/FR79W0901150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfdbe2e5808a250682d8236145d6b829235d65e8f15847273f6388c78436c01f. 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/FR79W0901170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40101aa9ab9208d5acb79a02b7dc75a55567216d57b2833061fe3e5df164d957. 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/FR79W0301210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x059bb7fefd3ca944a902400b88ed8b91b41510fac00ff2e1273bc48f2a5b79df. 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/FR79W0301240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0a3e0931aff34dde832ae772f871fb788dcb2bad087c97a71c10ec0377b42d. 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/FR1T32108070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c947be1e1b7fadb8c2ba5bda063d83280970de7bd629851a526b02297ffb80c. 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/FR9W11318001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8deccb978f0ac266f75f5796a1f560ad575696b8f52f1df08ca00ee34ca9706a. 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/FR9W11318000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99e8eb8537aeff9964525817d9a6e29dbd65b6ebc98f8555df9802b6b729a45. 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/FR9W11318004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03fa1876c089606cada83e62f2fc262a0ecfd776bbe4d7165331ece89c8bf293. 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/FR9W11318005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9de8adbe130dda57e962941a27cb1d61fdeee7d370cbf637b44891952b55ebe. 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/FR9W11318007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25326cfe8882eae7ba2cb722cc3eb6530dc34360dbbfc630209fce0854e31144. 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/FR9W11318009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b6feba1583f2c47f6968cbceb6143ea23852b48f670778f8d02c27893221d8. 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/FR9W11206701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1610c6716194c3dfe41f0ddc8c76e7b9837bebfe458d3f6eaa93c067e34ade. 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/FR9W11206702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd955f68f15580cc8627a8d98e9b89aebea60b478c55b4a1dcebfd1e0f5841dae. 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/FR9W11206703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2e078b67c8662358a64b801bc03070f8fa03f3a0c6952103586be85d59332e. 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/FR9W11206704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c5e6111b993d446e0ffa8849293ed8ead729a5ca012528b7f064cd9c5638d6. 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/FR9W11206705.
Boris Vian, On N’Est Pas Là Pour Se Faire Engueuler!
Boris Vian, On N'Est Pas Là Pour Se Faire Engueuler!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb3cbbb186bc36373dbf940833d32a8fb1ce932c31f35a66ccb2a3c7a7382fc. 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/FR79W0500680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75cca9e2156bd631466a2b65e768ba3692def0528c74de1989cab59ba77d5a67. 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/FR79W0500660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684574fae1f9bbd037d6a81528dbc6cc2cbfbe0f0b51a786a390d2fae6ec47ce. 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/FR79W0500570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda761ee07be064ea7f84b6434a315c749ea3c006f4d2ab11f39683ee268f45fd. 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/FR79W0500720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd912d312f067670f8b93fd8ae3b56fa65ae27103d06b3d63164ca3798a806385. 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/FR79W1100690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5e09254e34ab2c2c0cbe26f54fb1048604dc9c95e441b4b539e0fd37f65003. 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/DEQ831200001.
Le Petit Succès (Feat. Barbara Carlotti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x055afd7cef421c7e15e5aa4a57b054256e35c60190d1344900b259bc649ab202. 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/FRP210700030.
Ils Sont Marrant les Gens (Feat. JP Nataf, Barbara Carlotti)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f694c096e981721ac8548994d44a6a0335436443bc7b1072dd863e6c84c2671. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRP210700040.
L'Amour à la Française (Feat. Philippe Katerine, Helena Noguerra, Barbara Carlotti, JP Nataf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeec863bf9b844a2bc2b10831eb80de5edcfe7cb88001918eaf903ad302fde26. 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/FRP210700050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d5a305fb5abf432cd90541631b9d0d9431fb6b7fe0afacac1875a0c4ad7050. 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/FRP210700060.
Emile Omar présente Brassens et les copains d'accords
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b450353f2ed163eefeb176b7f4ff643162d3ffb3b8cf9825d4c74670d925961. 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/FR6DF2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc26a2b3fa1487c4331f68c4aef21ea66f76b9998c73eb61b800117955c653fde. 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/FR6DF2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f520c8b2d84554a846a9cb98f228a9564137cef62df62826f7aed2d3655164e. 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/FRE412400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb52fcf0a2ff4bf818d8e14bc45843dabeac1a757d3fbe3794ca9fcadbbc0ba. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/FR9W12434086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb34aef1eece97f7ec7d408fd1f97a12c178d6d0377933ded0d1abf99993466a. 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/FR9W12434082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a8a76cbf393aad1840d60ef1927b39934f957e2bfe5d6b0272226ee8df41bd. 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/FRP401700490.