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 0x3c611034f60495f2c9ac24fc5309e04cca235e21da474dd129c69a1a7d84a3fb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/90c60c89-fcd3-4fc0-9619-be181fe3fab9.json and https://artists.proofprofile.net/proofs/artist/90c60c89-fcd3-4fc0-9619-be181fe3fab9.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 0x6d2ba7f0ebbf1e03bd2f19dce16f0c8f235038671e99aeec5a3b77ef38cc5ed4. 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/NLA6A2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d176cc7797682fea57f29b1c96a086df63f1b88881d04bb8ffbceeaf6f41bfd. 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/NLA6A2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32a2fb39dd517d66a3cfdf65dcc7ebd29c5be8a942d37d253e6792d0c8b30c3. 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/NLA6A2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9627c7051ad3b2425cf903a9e60245f66a6041de297f23645a252e1623d9f79. 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/NLA6A2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac2d5d7b267362c48fb8b9f3ddecd2148ecdc673819d614521511daca8206fa. 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/NLA6A2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3968a8504fc3603f690c72b79dd0b9917198607785947a0f13179a7989b4e53. 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/NLA6A2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13761a4e43d9558b1042a2c1c67566b8cd4356e5180d12b192d31c84b5f36c03. 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/NLA6A2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82ab19d84868f8fe0416a52e274e41fc469ad37e7899d7c25362b2dc3cb7239. 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/NLA6A2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d7c1787447c29ad2b4e053cd821d81027af53923b1c99004b00e1805a0623d. 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/NLA6A2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce741e41a5b0b2794fa3fc75f85688a4aa43d77748cffa8a30326cfdf3b5adc. 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/NLA6A2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c0d18a3618add2fa073fbb3315f89b563873bb08efd2ac03cd5eed33e16215. 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/NLA6A2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d05333bc41272252ebe72092a458cbb6858df9d37065e9f93819c749a48c03. 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/NLA6A2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd3433d7cc75632a03b95e9c3180d198ff4c9a7ba8095510b829e62d943b5de. 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/NLA6A2200073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34658fdd98f7a6f5cc4456502801a9a0ed8a11383e9a3a41d768d1842bf74a1b. 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/NLA6A2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5e72aa0589f501e17b302843e24e72c3e65a4dd3f95276bfe74c2f0e4ff7efd. 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/NLQ272400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce741e41a5b0b2794fa3fc75f85688a4aa43d77748cffa8a30326cfdf3b5adc. 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/NLA6A2300077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa767d3693d11a19daa608c857ec5bd375a2a7abe0fa4099d2cf23fd209227c5b. 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/NLS242300189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d05333bc41272252ebe72092a458cbb6858df9d37065e9f93819c749a48c03. 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/NLA6A2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d176cc7797682fea57f29b1c96a086df63f1b88881d04bb8ffbceeaf6f41bfd. 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/NLA6A2300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f18295c21ac43da7934b67a2ead6339a54305282bc7f918947b1824538551bd. 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/NLA6A2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34658fdd98f7a6f5cc4456502801a9a0ed8a11383e9a3a41d768d1842bf74a1b. 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/NLA6A2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9268f74bf746985e43f01e45235c40c708527aca1ddffd21799dd226c46a30. 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/NLA6A2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13761a4e43d9558b1042a2c1c67566b8cd4356e5180d12b192d31c84b5f36c03. 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/NLA6A2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac2d5d7b267362c48fb8b9f3ddecd2148ecdc673819d614521511daca8206fa. 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/NLA6A2100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x765808761f9186b45161cc0d47f55d095b0939aba4d150d3e61dc7c500e9a64b. 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/QZFZ42146368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117facd62931d2ba0c5af67287707e98d314be341c8483a9a841e05c79be59a5. 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/QZNWS2094137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0462102d0fa7090acb00da56ec01ce75f7dccc560abc394e2d80847155fc5af. 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/QZHN62034510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf79c998d4410f4b6fc4b2648a7a8624040d06affa7886004b9bce949bef870. 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/NLF711907561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b953ef7502802ce40da8a63f1026f533818d6f7685ebf4b13794c48e1db2892. 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/NLA6A2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1830affff149107546b2fdf9d47f83deb74412340986159759ada5e1d89afda2. 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/NLA6A2400045.
Dom Doen (feat. Danny de Munk & Billy Dans)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e64b79efdf2741e7012715597cfa1dc6f96bc1d0f4ebf6f8e32a56585ec81b. 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/NL2GD2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaa2e1e5dc7fe9ed0b95cbec15bffd36d3d10333fec9452ab5b3f2d7e057e39. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/NL2GD2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998a0a49737c0cd8e89d31b3a32b8f8d6435cc1e11d0f77ca0d5c0be7552e194. 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/NL2GD2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba498bd0af2156d2e178e949b2c784974a5a2bfea5dce10955d9e6d2561fe9a. 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/NL2GD2000006.
Levende Legendes (feat. LNY TNZ & Stepherd)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa643c6ae46f16a15ee03a27b5c98d156e5b7eb6fdab37ef2143bf335ab048975. 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/NL2GD2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86537d11e3c9116c3171ba66454a5388d5edf49ed72cb7561d9812fa64d2f8d5. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/NL2GD2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaa2e1e5dc7fe9ed0b95cbec15bffd36d3d10333fec9452ab5b3f2d7e057e39. 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/NL2GD2000003.
Hoppakee (feat. Gladde Ger & Billy Dans)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52af25211eefe6f3b6bfe191f7c571db3cedaefba552a2e2ed76544ec8bee96. 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/NL2GD1900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40aec835f16dd5d39de58969431ccbbf86c76b85444e3a321d9b37d3ec368556. 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/NLWJ51500001.