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 0x8e00333b52c8ed2bc08f0efa369dcbba1c2d233cb6b522962f6122dab51f7559. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f658740c-9a4b-4c45-bbc2-7506eb4e1efb.json and https://artists.proofprofile.net/proofs/artist/f658740c-9a4b-4c45-bbc2-7506eb4e1efb.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 0x1d050490b01cb382d9161a6fd0ae83b1edff1304dec9d50bf3807b518cf8eeb1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:39:18Z), 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/JPPC02000662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7854e528f4ebfaac328815dfaacfe08fc0651bd54875897af4d7b86e8a0b0adc. 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/JPPC02001128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ef69b939ab3ce749ab48d4315c2eba304e9dae775d9d45d5ffa20f45b1053. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/JPPC02100841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e814b91f4faa5e6b6cb78fa32943838a18ec5af9875b0372ae75ea5399ed8fc. 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/JPPC02001256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb79332b98fdcf4e8b668426368694e88d68fd0b08263f8e2858cb1ea8a9438b. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPPC02001260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a6fd392d99bd0d23e0a5af940092ecbe4cb26bdb98bd2795b668688b8d0b2f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:37:17Z), 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/JPPC02110561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159ef69b939ab3ce749ab48d4315c2eba304e9dae775d9d45d5ffa20f45b1053. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/JPPC02100841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e814b91f4faa5e6b6cb78fa32943838a18ec5af9875b0372ae75ea5399ed8fc. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPPC02001256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e9903010ac34f01fb358228ae29a79219556746eacc901cefbf0b2d3054275. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/JPPC02001257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874f69c921671f91576d7b06f37b41e661e70828405aba869d2cd1ba22fc0fb1. 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/JPPC02210533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf88107038cff469a08a0ee2a1bcd8c94370743e548de6c8e75c54b666836a545. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:18:08Z), 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/JPPC02211903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d15decac4d312e5ba7e3af647a1be36c4e8f6fd382dd0c2c1d3e7929b4e18. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/JPPC02310753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4d15decac4d312e5ba7e3af647a1be36c4e8f6fd382dd0c2c1d3e7929b4e18. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:54Z), 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/JPPC02310753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd07131d4a8968e7c053bd3e326431f7a76712435f51458697b85578a927a97. 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/JPPC02311407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x744e9ccf6268fcfd486fe153b475c37fd0cbfc3db713302beceed58261f5b368. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPPC02312042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba69d650c261227e9e4df7fb05e020d7ba8a92cab1a2c710b2cc27b598e4cd9a. 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/JPPC02312849.