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 0x7a10aa2f24ffc83846233bf9314ac364ae69876a876ddacf5e196293e6d22182. 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/d52135c7-277b-4720-a02e-c691e2619a64.json and https://artists.proofprofile.net/proofs/artist/d52135c7-277b-4720-a02e-c691e2619a64.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 0xf668e7230bbb278250f9188752ce15dcb75cf8ea23f3a4665cac772081a7624f. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ITB220900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20811cc6bb5842d85894dd6eaaedf5be65f4ce4275e35047023195f98498de2. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/ITB221200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe22eb32b492cf35ed6e6f5e34563c6ec56d793726ad09a7918407b3c39002989. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/NLQS92000119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe80f79bf809299415ac3012719d00bea8cd7f91c8916d91aeea7b8f5899b29fc. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLQS92100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1e1b1f54f3c52eac998aeaefcc21a3d82b5363acf3923bdd48a6f6ddd298d2. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/NLQS92100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba83f432a6d3a7b0d71e7f20cdde5408c05925293251744d2551914787a2a7e2. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/NLQS92100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507cd7efd4e2d9cf5a6bad13074e4c617857862e1b5141c97e7df8ae39e57c41. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/NLQS92100089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x828b97cc990499535bcace4048d40c56a39bb7bc950a11fdeacace7784a8edc2. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NLQS92200115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e291bdda4c375639c1a55ed6cec3cbc5c72e030e1d3b8957a8288162996446a. 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/NLQS92200135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab680f2440b582f093e863e62461105bc236fda2718dffecf9e94b4f78cec89f. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/NLQS92300016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af8c373d8f4221a5226bb2ee8b1724d92bae4414a0bb3090d8b55dd20fe3b3c. 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/NLQS92300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fd4f7b43f436535a6f48237e4bfc317c48550e1b10a3f1cb95eb6ea426078f. 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/NLQS92300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379a1fae1077b1d0d6ed5aa87d3fc87275eefadeec7ca3c0fc5d801609d1053e. 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/NLQS92400048.
Rocking Shocking - Dark Collective Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce18d40812f31457c1b23ece1eb57219980ef42e5e2b88acb4259e0f027f48. 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/NLQS92400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f28a17bbe33ec0df85e0cce5dcad98a45c763ffb4f2a991b47fe0b0224f357. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/NLQS92400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a3a1e30a7da8f880e2c3635ca3aa09c6ee2fd1a4686871defccec5aacd36c7b. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/NLQS92300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af8c373d8f4221a5226bb2ee8b1724d92bae4414a0bb3090d8b55dd20fe3b3c. 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/NLQS92300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d6072a6d3bf296cce2e511dd047530bfad32521705ee3edd4a56038c9b09f5. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/NLQS92400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25204dedb4fe22b58d9ca1a0f779d94a7c275c74f8a26d815498c411aab89cd7. 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/NLQS92400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa2135872c514ed48deb7d19fdfff1ec7d5a1372beff4915e10e292c106c1ac. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/NLQS92400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc626b33c769259ff8c03893e06561a8dc0d607090f93166d3c05e5d8402c62. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLQS92400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeefd57d8c44a01f29465d1e63390afef27c13b999d5b27e6c3043c88f2addd7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLQS92400060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce777f66fe0471b328b31e46e98c7e4989e0d1017fd1881d9abe5e401e0ff7bd. 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/NLQS92400062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d4590fe66fb0558da216362532f86cb66251577c07519b54af67a600985df4. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/NLQS92400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62e0e98ec9b48b7fac0e9d14b070475447bee31f583a270cbff80de1abbd591. 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/NLQS92400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b4d90f76e883a206fe3ac2541db346d27c9e67ef4f3a57fd670295e865a62e. 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/NLQS92500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af8c373d8f4221a5226bb2ee8b1724d92bae4414a0bb3090d8b55dd20fe3b3c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/NLQS92300123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa8dd5785a15a9dfbf1d0c21093f16e89b13ed47326d71704e0e4a75bdd4ba1. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NLFL71900231.
Masters Of Hardcore - Magnum Opus (Chapter XLII)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131eb23abfd714e18a047786c5a22eeba962ecf9617b4531869747cd5ee4ba6f. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/NLFL72000062.