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 0x7048eeb9ac9c629ce637f01708fb27a2fda0456a88ee56771b1f260e70b86378. 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/7c0e9410-b1c9-4031-8f72-e7462bb08dd7.json and https://artists.proofprofile.net/proofs/artist/7c0e9410-b1c9-4031-8f72-e7462bb08dd7.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 0xe6989874e7cf4c0309b773fc0272a892f3edbac3a01628c97beab184fb09ae2e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/MXF399301041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3c36af6912c170c095eb2a1a1fa6c363848e5183c1a26d7a98cc9a507dafc3. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:03:49Z), 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/MXF399301031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b04d351c1f0020ab7bf30c3d323abc53a218dc399285c9bdfa78ca521db1ae. 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/MXF399301032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4793c06b100b90dda7658a73e05249a0878e650e0702a2bc6c1be9fee2dc32f5. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/MXF399301035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9922ed8c2dab676cd6cd68cd73462688ce1e0a2536810def477f1767463fc. 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/MXF399401355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ff0903381fad992a2451c9981bcb4094c1c15a1789c2a5c33cdab6cf8d9b04. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/MXF399401353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd357308ebd1e3f68fcc536bc2e9b2788358c579d336a838b51932cfdb58b5d1f. 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/MXF399401360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3502afe6808d4cb3642f7760ead214c0deebb6f94a3cbe8ea7150d17510e566a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/MXF399200797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94440162c68ceb19d0f41c0bf56e1df380cdec0bdb2fdb86294c631760d90bee. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:05:05Z), 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/MXF399200794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501586cbcca85a21175406c0604be190ce86afe9ae977d7269409d64173c4754. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/MXF399501674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42182682b1c83b52f47208880c420cede026720bf47be1692922d18fe2ae971b. 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/MXF399501676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5c8206bfa8838740f187b80bd7ad494578940de6d5e36f42a79609daf18263. 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/MXF399501678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fbb427f07a930be2cf6a533b9c1c84cd9804591b0d988bbebcd9e685d6c168f. 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/MXF399501679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60e3b1f169e073df6876f4623bb71fb484a2d23bb01fff5612c13d66bb852b6. 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/MXF399501680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6a575fd4ee3a3339eee72f62dd8532ee5dd144f39ec9e29dd8a278a61d86bb. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/MXF399501682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe001ec0a1ce5f99a48ede69e4b80fad23d50b26f3d1504d178ce33a32367a721. 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/MXF399501683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841081f347d269be54db36163a1d8689875c03dced4cef885c79f1daa34961a7. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/MXF399601846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab39aa10360a2c834d2f3a2513042ffad27f441355dcb9aa0fd0d7f1855eded. 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/MXF399601847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142573b172fca9b917dc4eb5247c61d1c5615093869d7155245a0062d01226bf. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/MXF399601848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dc5d2cb9821d61e640f8b492aa06dfc549d83c926398400297d1f3832bd248. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:50:37Z), 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/MXF399601849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bba65c1ec2c5f98a0e68a478f062bad6370a8f75bf3c48750d0a6ef2798670. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:31:52Z), 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/MXF369733898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a90989a60ddac3dbd8cf792aa68d1c3a357e48070fc2d3149a9cee8058983. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:03Z), 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/MXF369733893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9562fa6d9f88fa52a73c20632035b6bbd08059ae3cb62ff377082d19ba635e6e. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/MXF399200803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fb9e1eb0b3d1acdeb5050b04ad75fc8db6ffef412551e03040fbd4b9d65421b. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/FRX452556833.
He Venido a Pedirte Perdón (Anda Borracho El Buey)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0410a018d1a1d5e6b9ee9abf3adac15a3342a9f76311b1f9aa0dcd14b2fec8. 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/DGA062503525.
Anda Borracho El Buey - Bonus Track Trival
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf88b28ac50c8aa50b3b656f6d8494dc91d06921feaaeabf772a8ad5a374f731. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/DGA062503526.