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 0x6d81df5d0752e5a901bfa21004e3da066e5f1d11073cb1f87070e4527808d7a2. 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/0478e6ae-4975-4a85-86c3-46f20ca56734.json and https://artists.proofprofile.net/proofs/artist/0478e6ae-4975-4a85-86c3-46f20ca56734.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ils cueillent des jonquilles (Micro Siestes Acoustiques)
La Marche des Enfants (Suite pour choeur d'enfants)
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 0x37bcef8da386424a9552bf1001d7b2ce03b1172e2a39390eecaa7a464e50619d. 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/FR7Q31900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d3202e4b4dfc7c40b4431ed4d1a2b2a1192645c513b4d2566645683f2509de. 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/FR9W11709760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7357211f75fa4efe8f7ca04f5a9efc48425e90d871237424508b467c9e1068d7. 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/FR9W11709764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0af6ce53e2fe318ab0198295792fdda0625d3a9b569dd82f36c60ebd24d77e7. 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/FR9W11709765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c901acb0b05a1dae3d4dc6fa4be432d8dcad071cccac9e4eace1a72bfc7da4. 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/FR9W11709766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dbc026ef580d8d0af3119fdac94f479eb1f339a031f39afe4ebba9df0ec8bf. 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/FR9W11321976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4611586671cc8cc4b20d30b475176f4a936ecfd5db03feb73496c33dd37304a. 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/FR9W11422473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4fe3ab0c12a608dacc9c1c37d8cd132a707c3bbe6e50960ac7b2ed1a4c2aed4. 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/FR6F31201810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d27ef10822e1ed3bb0b5d0d0bee9f1164ca716a5a6a602f93fbee441245f15. 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/FR2X60800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2722f041e1df932fce238a4fd92fa81cf39995649999d4b20527dd2c31a084c2. 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/FR2X60500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6ba50711b02aec116f5b25d4967ce5e90e63e14db0816ccf317ff5b13268db. 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/FR2X60500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23b9aabf6e2a1249bc00e0eaa415e92983ff9dd9e4f13263fa8f65c4762c686. 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/FR2X60500004.
Prendre Soin (Micro Siestes Acoustiques)
Je ne t'ai jamais aimé (feat. Camélia Jordana) - Single
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.
Au calme, les citoyens! (Vacances et chanson française)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb3f59dfabd5aff5d39e9242383427e01c0a7da2d09e90d6d3ed0c6576fec3e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-21T16:15:58Z), 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/FR8Z01600074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48028375f1bf9c482be09080164d031e8dc9b097061b1158ae29c311340cd32. 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/FR8Z01600094.
La chanson française, au calme (Une certaine approche de la variété)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdff6128f7c8b00e94af1765a4e7010af2eb64a97f294051d5717b4f25419fd. 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/FR7Q32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8d0114f6682cc0f4df86a7246a78fabe290583bb0c87b68e6aa8f300013d74. 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/FR7Q32400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce656f6cf6a5fc2f8569af914111c01b75cfffb68b083794cd209abcc375ce1. 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/FR7Q32400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530c3c478d9ea12cd5d1e85c6b18a2d17563800c8d6233204df717d504c02dfe. 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/FR7Q32400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb88d477a17cc1abb5fcaeff6a77a689777f73b8e04ead6dc6ea859a3aaf6cb62. 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/FR7Q32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9e24b8067832aeb989e103f3a9b8234ce5d0a6e5a8fffa87a0a5895e0e2c743. 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/FR7Q32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aec091ce966a677ac868d875cfec7795d10a14cbbe70671d4ef4856d42f4c3a. 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/FR7Q32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x565ea18b97c69c984ce30a1dcdf74155702acd6958e76b41cac4d10d7a1d1ad4. 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/FR7Q32400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80645b22cef18e4529529dea00447d3527bb33d9853e5e8e42971c98e24128e7. 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/FR7Q32400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c8d0114f6682cc0f4df86a7246a78fabe290583bb0c87b68e6aa8f300013d74. 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/FR7Q32400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cdff6128f7c8b00e94af1765a4e7010af2eb64a97f294051d5717b4f25419fd. 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/FR7Q32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3b6c8a3c24e78221f452cd5e453ee2006da24e614d470909e75c2f617fa78cd. 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/FRP5B2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875c8a88f56035b5b7eb915aff43bd44d420f705dbe89cbcaac5727d41bb04bc. 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/FRP5B2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b6cd4377d8554567001cc312b15dfed608d6c4e0b340884eb03645da76c4db. 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/FRP5B2300020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2760115e6d41ae1832897252cb8c841ccf31fc7fb151f7fae01fa91267d0fae8. 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/FRP5B2300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0636cde040b91af7e2e6a457aa2e54a385e798babc8741e8cb33714e4406addd. 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/FRP5B2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9946d9533ec08735af5b2c6354387e45d5ea11cf4b72e4fc9440b753d726cad. 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/FRP5B2300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b9f8cc1c11c06834330f4bf3ac2a143e6cb80e4f0a1fa05272d27a89d85ea2. 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/FRP5B2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930ec8e757f8a26d28f3e05f0e4c39ccfd48c92afa21c307b7ef87cac7ba095f. 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/FRP5B2300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x959c01979cdd1c2397f8268427dc00b66d62c42ef8d079f158fcda4bfe64f92c. 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/FRP5B2300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5dafdf093133ec116cf7ee0f6001a3531957e4f342d2c6afb9daa9d24d6612. 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/FRP5B1900106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f8172b4449104d72106439877e1ad4719449cdc83ee54ac240662ea53eaf86. 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/FR65X1600020.