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 0x71f63d5738c1392fdcf15819d1c279fbb872347bd22ca5a46ad03fc93accaa03. 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/90aa6227-00e0-4b59-b1a8-e5558ed0e6f4.json and https://artists.proofprofile.net/proofs/artist/90aa6227-00e0-4b59-b1a8-e5558ed0e6f4.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 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 0x30adbe2cd5fbce899db385fd4cf0d91eef48b16162278fd81aaed8f2b7734623. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CAD431897007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a294eb24a5a6a77c8b4a29da79102b75fb0ba02954ce230f4cce52d38c8eff4. 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/CAD431897003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e473a5be09086a2f8142558566cf15be6b4d1918361a5d006658b2ea5572a. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CAD431897006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0955e68ab2ea5f2b310eab9fd9a8cfb45f7c5a9afbffe3a64d3980526ec3a64. 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/CAD431897004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9ef9181e9a500efa3ca9cd3c8194f3df0be9762ca7f47bbc305b9b4c72cc45. 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/CAD431897010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca44ac584a2b8903c4245e41fbcf7556e25d4a1fc2c121dea3544cd91528110. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/CAD431897015.
Le camp de vacances de Jérôme 49 (Version campeurs)
Le camp de vacances de Jérôme 49 (Version moniteurs)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69c4c83b4bfe5842b36ea0762b95fbcfa3f43851b2091dc73dadb7bd1a55b4b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAD431997101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0263a126d2f03bc94160d64491f64dddf6cfadc2a7034a910378918dba7a3d13. 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/CAD431997102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cec4fa5a53914d46310711c93585a167f4c3350eb3aa78fa87c70c220df144d. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/CAD431997104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554f0d1d10a4c121c2fe9a88d0c633dc4c33095149062b3b779d334063f974b8. 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/CAD431997105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a5141cfc8fe58db9b16401717564e701eb71b0d69b8b5c7a9c4072e91aca40. 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/CAD432202001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7072ed4ecaab9da1b0603462105db3a3466eebcfcbea59d25b89d4e24df94bc6. 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/CAD432302003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x625d5ee87fb0960fbce63682b5093ee8c6789228ca49c4f419d8348360070a64. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/CAD432302005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d836a081703a8ba30053057cd2441aad7205760bf043950166bca9d7a7a7a8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAD432302008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091e92bb5510108995d0820090ae30a10cd0f3d4442577dc4c3961b336b9bcdc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/CAD432302009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f59946a47f7b880be9f1f4f86da3dac9beb389c283ab3fd398904b9640ed08e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CAD432302010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e845b3dc201c6f9bc25b895b5fe8305421d82294aac257fbe4d410be454134f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CAD432302012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1095daba96cf5cf09331b7f01dbcfa2416cf14c84e91d38a051e855b85a02193. 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/CAD432302011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b6d965a597a27a26135727afdb0f7a7023fd94bd0ae4dae2ae526375c4041c. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/CAD432302013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64de79499806026a63d17cb3e8ecc5da064e8d96fe3381a9d4f892b030febe8c. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/CAD432302014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8bc82b7ef27cc92d30d9ea3c1a1bc2b0a0801df6041e494e3874d42555ae2d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CAD432404501.
Et c'est pas fini (feat. Alicia Moffet, Eli Rose, Èmile Bilodeau, Jérôme 50, Luis Clavis, Mike Clay, Roxane Bruneau & Sarahmée)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d671929d1b73e22b8ffeaed34f371e3269aa076655f90b719663747d89125f2. 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/CAQ522044001.