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 0x6af27cadb091af1f2a87897e149d27f7a79ae33f176fe9fcab9d8e341918e244. 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/bda4e0e2-1895-4d35-bfd1-8b5da460db67.json and https://artists.proofprofile.net/proofs/artist/bda4e0e2-1895-4d35-bfd1-8b5da460db67.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 0x1ff590dab18376fbe0876c791af9eab564b5e4fcb3764500e70c60a1e68096f9. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNJY2154898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2edfc04522827e553760bed487f576baaedce32dd357bc8d192302d3672f0ee. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZNJY2154900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97528ad494e52248b56234756ad01910e789f3c539f08eef0a0a59a98db113a6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:25:28Z), 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/GBSMU6879669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d30503fe00dda78b101308bc36a561806274f5966f10b6632de0cacec999d1. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GBSMU6879670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f75104bc0b8e7c0ee99167a314bb240d7b500d6b6f4346c2020023ef5880a9. 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/GBSMU6881561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27230f155661fad36d1711703cbb5312286618ed825981624e70abe5b85f1182. 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/GBSMU6958353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6c55b23d8c9c997a6ea1ff3244b09810e6a2df3aae0190431093b332b8cd67. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZHZ32094174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a327232e7bd55e13ffc3d1fc6a30c334bc282b3d4847a1a9ff960fb97f1a30. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:26Z), 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/QZHZ32094175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6134ab6aeeb1e753f57ebb8413087c389ac53c5bf972e945ab5e25ba8c412. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZHZ32094177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21de6cd17848d0ec82d1c317cf47c80cbbddc89c4a2bdbddba887ce4ef0f158. 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/QZHZ31956892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7f85ee6d0150f724262a02a9ffd30dbad51f67cd6701f5784972143e898ec9. 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/QZHZ31956896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa4caeb28d1e8e7810f74fbfc61c1538463b1da8c1015f894d9b59a0b8f51eb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:20:15Z), 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/QZHZ31956897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8025357d6556b24d1c1bf511d5ef08b0564cfdcf07b2004c4e6de93464e3dd43. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:33:23Z), 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/QZHZ42053870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9194a917a066855dfc5495f29ef5e424bc108fb4c1390260b9ef2661d33d8a. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZHZ42053872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21620fd455472bac32b409329875d9ef8f7840fbf88e0c89e90cfbf30fcfe73c. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZHZ42053874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d827cf6a55609ebfa896964fc096dfe07763d318d2e7bbe890e3813b1bae11. 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/GBSMU9422313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda26b7d12bc922bb1ee220420adb092a3937a1696d731fbdc0a3ce1a825a2980. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GBSMU9422314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dbbe5e1830eba162d867dec08f291a3c216d537d750af92ef9b4b9ffc0f474. 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/GBSMU9422315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74567dcaccc736930de6a1538d0b89801bb4a48f0b6d930ba32cb332af1dc3fb. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:41:00Z), 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/GBSMU9422316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63d85e0361028794ecbba646ca6c5a33263afb257fa5b40d4b06dba89971206. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T08:33:53Z), 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/QZHZ52130893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e422077ebccd0b92616592a8e14cf8a1b01e865a9ce54c99af56c6d9438f33. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:06:01Z), 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/QZ5AB2419622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cd4df9ec4900335d197f8d136a49effc4773b8f7df75426a093837c95b0229. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZTVM2144048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cff47606896141dc5b49298eb25d233b65780c4e32afbbb10423ceba3591f4a. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:30:45Z), 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/QZES92224521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1115d76cc2dcc65ec320783c3f6a1b1eae848aad6863d1693e27ca87088904d6. 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/QZES92224522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa014eb6a94deb2a7a2f1e21f6acb8b40af34409162ba794bc8d8b429748035e8. 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/QZES92224524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfabf235619282377306d5f94ff9f601bda5c8cb70d05a218d9132ab0a286681. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZES92224525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856815b7a932b54e651768de25a33b5ec6349ad072c163dedbc713d80b030243. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZ5AB2405400.