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 0xad91b2d16ad5b0a28695d9c2ad37389c46a4e14d2a9f35c64091a6f7db84be8c. 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/474e3dff-8ed1-424a-a97b-eded5984cfa5.json and https://artists.proofprofile.net/proofs/artist/474e3dff-8ed1-424a-a97b-eded5984cfa5.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 0xef1732db7c5823910482de79eeedc522de54c5827055c4742fc109ab3c86764a. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USCGJ0995796.
Downtown Ride (feat. Evelin Auger & Denis Pouliot)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceda08d836c4829b4f6694850e6c92b33296ec96c53a60254cee9e701ebf3fe7. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CA34N1300412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d532a3a7502d58738c6662441f8f41af73be562f44538c4cc57817bdc9ab643. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/CA34N1509107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc164408cc486a03a78e4e3701acbd8646fa55eb27e03d0dc0d5fe7b89156626. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/CA34N1509115.
De-Ci, De-Là, Vol. 11: Les Ponts - Vol. 12: Souvenirs - Vol. 13: Nuages
De-Ci, De-Là, Vol. 14: La Lune - Vol. 15: Le Soleil - Vol. 16: Le Monde
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d0a3da58115dc3d068c0858cc4f145f9df5aef31dd7ab81af7333f2fe114b5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/CA34N2206106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb534b4e11c95180a286f91ed6dd70d5debffd869ef1d69a71abf2e1b993890e8. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/CA34N2206108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d04f4b70c1d2a4799fc85036f0ab5296d39c7ec9a94808bb6fdcd7b6805c9bd. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/CA34N2501101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8451cf24e785b32256da55d973e45dad11780d24d8249609be32470b0728e2a3. 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/CA34N2501102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63cb70d8fdd363a117ec376817ef00b1b05b285af2adfdc79da1f1649f2db1c. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CA34N2501103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04b0d6557b3d09378445b3461cf2789cf67482acc6ed31fbef7d8fecf513e9ce. 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/CA34N2501104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d34b2dd2b28ffa062f9d55d31c68d8492c1e94e3d2f45a3ea8b0e4197ee090e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CA34N2501105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0490f72a6fb6b122b3950cb22067c01109d882585ad6a07cff3d668cfbcc75bf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/CA34N2501106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d14fe1cb14c441da0cf4f1cecc7d8b78801933377db6b11116513163a505d78. 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/CA34N2501107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06191543b298c1d54cfa9a4351562ad9c3de0cbacbbe0ca22283f46e7c31d231. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CA34N2501108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d66f524ed2d3ad0432ae7472ff036543bd3fb47b2ae015726bca804ea6af38. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/CA34N2501109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5657be8727fb5dd33a2837e5466fcc3dde9b5205f80ddce67a9d484a094b7315. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CA34N2501110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8c171942ae70b1a89d4fb3a314402b74e103ba3741666be7441dc9f6c788e9. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CA34N2501111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3699d2a8a1cb474e4ebbb909e36dd352baf03506edb9292814ca045fea1cb885. 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/CA34N2501112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35824d07e7b1511c529fadb3fd14385ee2bb807d34a41aefedbc4d5c6270bd74. 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/CA34N2501113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0937fb60b930f5f4c24deab9b3ef246a5f05a27ca2ae2e9c2e9b3dcea060ac3. 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/CA34N2501114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07345c962fbe02e924db6ee4d4a1c6af97962a120d072257406ccd3367c33220. 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/CA34N2503101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3b9837be3554381d14179f541252c8b2c8cc347d77c19d161f05282f331b9d. 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/CA34N2503102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe482b220b91ae82083ff2bddef9143d1a68d3e3a3f0bf007eaa3b188b3b286bf. 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/CA34N2503103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1c239c6d8a46f649a808a504bbb27444812fb9354efa56ece286d9e784ddc1. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/CA34N2503104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1d208ee7fdbc448853016229d837ec5ab3c628c6dbf1f1db96ef937470541e. 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/CA34N2503105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede03d5472e22680b140b931b1011e401140f8bac31a4220170e566085fa1dc7. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/CA34N2503106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0b7958a674fec4963942e6e3a9b139fa959429edf2644bb83777efbdcf56fb. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/CA34N2503107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d6c21b036fdb8fe9a0ba1ab927835db954d074e98eaec262232324269f1c4c. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/CA34N2503108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e336b48586abc87c7cc765c65de149474150594a622450aeacc054b8410666. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/CA34N2503109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb71ad86129ec983cfed941a311a5a80413ba2eb43eae824c8f7b324827fb69. 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/CA34N2503110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43f155497de937f615ef4be85f1bb64429771b058bb48a945d9b0ea172e8626f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/CA34N2503111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ebed4ad989972ab6dc7a6f9f2fb6685e6770ea9da28827838eb052211a163d. 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/CA34N2503112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x526c3e334879dada7392a05e4621c60bc4bcd85140aea3ae7afcf118300689f0. 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/CA34N2503113.