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 0xc3dda13dabfafbbe2435d686d8da85ca317cbd9a4011aaff44df4f67ae545351. 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/5a811ef1-4b3c-42eb-bd81-c518c8422159.json and https://artists.proofprofile.net/proofs/artist/5a811ef1-4b3c-42eb-bd81-c518c8422159.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 0xca8b75d6a640b533fc16ec7af3389def0dfc75b3e7798e509e9dc90155f1bc87. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/NOEOK1819010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf0ac55369c2a3dab4e02bf830ba05fe61e9831374205012d313ab577c122fa. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/NOEOK1819020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa794d0a29c068cdd86eebb23ace6429fe825d60a817800776ccff6c7360dfb9b. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:48Z), 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/NOEOK1819040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4695447d29294af0c5157d72fda3e0cb9197075f433a291cb2089c44e1a1dda. 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/NOEOK1819050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8b75d6a640b533fc16ec7af3389def0dfc75b3e7798e509e9dc90155f1bc87. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/NOEOK1819010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5045f84fe231ce9e4dccdab7b52bdbbc93e2627a2701b818dde9db335e76f5b. 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/NOEOK1925010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f55e41f09337a18a5b0c298e5a907831f46cc622da163bc2804f4f64c1ab4. 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/NOEOK1925030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf944db0748596d1e18921f9e9879b0923482d4d07fb93fc015850bce468087c2. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:27:59Z), 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/NOEOK1925020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fd80ba6d3b9327f6ef3784a02ba6a9520e5290772adb79e230c892fa9f2677. 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/NOEOK1925040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4c33f93bc08157e5e81f305a73bb9b53d9cc543f3d2554b8183420dfb478ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NOEOK1925050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fced6db58e246c9e6ab515377ef453afe299dda93ed00bd0516de6f7820905a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:23Z), 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/NOEOK1925090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac43db9cfb115a99a1d9716344a4a6e98c1d58013ce1b8cd4767c7dbe966d62. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/NOEOK2371010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae5e1a7c31bb06b839ff242f6c4100989742cad9dfe4edf06873e4573f0c8b2. 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/NOEOK2371020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x661845d0269b0bb486a2069e42a0b11be3f832ef83eb78d55cd943e34d58346d. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/NOEOK2371030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6269f68c826f9c46d09e8de4808ec4eefab54e1b8b7cb2029333b1cd554adc8. 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/NOEOK2371040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf72dd12edcb5087b97946b8cae17214e5b2629e6574a85586743879243835c. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/NOEOK2371050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e447eb3848cbfb75d3bbe137dc5703c6f3060efdb7e81d7dd1119d75c4f914. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/NOEOK2371060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f64501daa8ea87749c6857d1948f0963e71403bcc133619d8b64a4e3a30fcb9. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/NOEOK2371070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5b48319b788b668b2d9904252cddde802823407abaffc68539db1997932359. 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/NOEOK2371080.