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 0xf7c1c3b54658d2bfd9552c5de3c40d32e4c0c4ef5bf18b4f2804dc15f855dbb8. 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/19889dbe-65cc-4f2c-b299-555d6b78cf66.json and https://artists.proofprofile.net/proofs/artist/19889dbe-65cc-4f2c-b299-555d6b78cf66.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 0x1682a820598ae85e60f7cbdc5ffc3b4cdaa5d724af1eb2d40b51a797e2c7c041. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZGLM1971905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b8458720914c31bfd7298c7a78c4c328e4a0f5ffa15a34447208f0d91f8e4e. 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/QZGLM1971906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e35f6fd4444b18861b02489e6ea3d6de39d21683ca501f97ea6362af4c4c46d. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/QZGLM1950525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837a36c6d161a3c17240dcefe55b2217ea7d5c0b1f1f9a9a61cae5b53c37efea. 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/QZGLM1950527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03724af80d12b9926a440fc1157ec265ec91f495b1c91edec40930149ae17dd0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZGLM1950531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73581f16372f42a427194efe403be1839a919a54ab5187e2563f7109ccce50da. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZGLM1950535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243211269d398eefb1805db06ab74dd04b39e6c3465cd294dd4edb4ad71f7451. 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/QZGLM1950537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8dd92da39542d2b22339ebb5fdc64959ae6bbce159c7ff7234599c18c7522b9. 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/QM7281495166.
El Rey de la Sierra (Los Reyes de la Música Campirana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83405a24ca2f8e8de8bd1d31c0d1a02943fc1cefa388288cd2605e6d9bf1566a. 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/FRX761546909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ab60fdd048491692ec96100bbded75c612a579442adf7fe3f0c0b4b24c40b6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:50:42Z), 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/FRX761546910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b3fb914b1ab84885b54f970d6319679e162d0b9bf70db750a9c9b96570ab0b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/FRX761546918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc0b287272dcd67b657724fb1f500f5c44beba2c8f836857954c7c11a316116. 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/FRX761546921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc1a5a5ddf37369a8d736c27c76822bfce8c49dcfe63ae59ba7c9df898db829. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZ5AB1767300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc8ec06e59a9733e8ccbd52beeee381d78a4fea89b396082428c97fb00793e3. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:51:23Z), 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/QZ5AB1767302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d6ed4fe0bfaaa8c3b546fa5c5f13bdfb7ea5a8c198d6ce5794a6aa0666c9fd. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:08:47Z), 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/QZ5AB1767312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0967bdc57ffda135ceed179af4f0a4837982c33c25a82eb414f7854846ad921. 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/QM6P41939091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627c27ff55135f39fcfc9ab065ac035ff5831c11d515cbcb08133a0dcfe9eaa9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ5AB2178189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302612e136033e83269ad878203345059f0354273e3debf0d26400b6dc6e1416. 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/QZ5AB2178190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e96fa2621549734946b0f54523e8ec84ef1a35531296aa0cc417ded57388dc4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZ5AB2178191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b37054db2867fa1fc11e28231b937f8edef1fc44c69da89f071862fd3a4178. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US7VG2183942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dfd125cdbcdc467d405c79dae9dab96ac753fd331c276a0199b54a242684bc. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US7VG2183944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dda3502caa39a36fc1ddc0105974d8e2ca47751476f4fa65de69ded75a2126. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZGLS2103605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd583deafcf474fd07d068ff81f52db0704534d0d51eefa038ddc78f2ba8b034. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZDQH2351259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6896418b0d98ac144b9cdd994925c76ee84c7662ea75593a4f24ee592ace03. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:59:17Z), 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/QZDQH2351260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398f210cdac4cb8e57e01638af6e21d441c273976b13cc98b04a146e5afaa270. 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/PYC842503366.