1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x6ec19ce1d073d5059d00ab817c77e5f5ceeba2ac9d199f576f215f8852cb7cc3. 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/7b53d176-85cf-4477-8e83-45e2b0cfec76.json and https://artists.proofprofile.net/proofs/artist/7b53d176-85cf-4477-8e83-45e2b0cfec76.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 → block OTSBitcoinBlock must exist at that height 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 0xf5c26d5f7b1c321422e9e9fa40310fcbe7d4524a75b57ed22b2eec0d414c6f30. 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/QZTB82317841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6929084cc30cabefa082300776e834f5baa22072405e566968bee076dd80d4c8. 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/QZWFM2393543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b8a7de4d73571cb141371f3ed4df04f8d4dbb6c20678dadceffab597637179. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZDA72428055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81487f46866c462f44eb774698bdd7336f811420fbc83ebceeb5ac3994681a7. 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/QZHN72489899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb705282f05a925dab573d30c2a4c2d4eb3879bcf54eebc78731942f205b54f. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZK6Q2408393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50860276799431568ea9bab24adc9e70f165fb54d0545d369e8529b2c4df5e87. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPEW2468816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c627a129e0a28bcfb0830f201262a7c7db1f3a9756645daf0aaf06bd09eba9. 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/QZPEW2468817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b2d4f116f2864c5a1904c7204d18ca3ec035be68c3d25ff233227dd7a67940. 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/QZPEW2478537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa51e0d493c1aae7609ce1e0282686bd9cefdc922d210ad369bfb57d186f87735. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T07:54:43Z), 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/TLVEM2404947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef75ff0f80fdbc29d526284f280c729af51d41ef141e11786fd0d1e9b22de466. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:07:31Z), 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/TLVEM2454472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab34310d09ae7b9abad9f53a08fe7862b66f9dec8d5ef310d3b6b28d2817260. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TLVEM2464615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704b50eb218b164dcd6083ddb2ea6e9094dbeb67d20c904186a982f4ae856ce8. 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/QZZ8A2419892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e9c4d4439666b01b0c03e125b766bd56f32eeea7e05cec48870cf60f8485d2. 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/QZZ8A2419901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff70664b29664051b1ee38428111012062d5e782307aba96bb08202e492d50f1. 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/QZ5FN2520069.