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 0x3422d7181166f4a37e6b5fe08e53218314bb7db115c11364051419c4f1fd5cf3. 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/fb3f1fdb-19b0-478a-8e9c-8dbee569c01f.json and https://artists.proofprofile.net/proofs/artist/fb3f1fdb-19b0-478a-8e9c-8dbee569c01f.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 0xe2d4ae9897e1a77180cac844f2185f6ca7cee35a9d2f1610c503a2e10d210851. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:33:00Z), 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/PLC062225968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8849c5fcee12bff055dcbf158f0562cc8a5f9a3f8a4baa5404ee366982d5b000. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:24Z), 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/PLC062365582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f6b773cf5b152467d2e32e9b20f91dd808ebfd523c2c23d74764550a9a2e58. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:47:49Z), 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/PLC062365584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf853411998b2f7fad634115f0e6f09023d0665c8eccf37b22e10b99feafb88d6. 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/PLC062365586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0f6e887dc80b0a20a26a5d70a0116e466ac7d5a4c89318582f1708beb0cd08. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/PLC062365587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a230da30966d926488f12f1323307d074a0a3b14abb6e2727024ba05db77b44. 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/PLC062365588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b814a5ac9e4bbc4594e0ce18149a33fc876865a64809725e54c1112d9382f55. 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/PLC062365589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbfb9603dbe21d33de2767ca851e191ec1a61c793bc807bccbe82b9b86479f3e. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:27:21Z), 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/PLC062244012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d9c9a1df3f7bdfdae2219a8a5f8bdd2d1b329d353d8d1f7bf0c452318e8778. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/PLC062258556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8e7166d1d49fd0413a5a5d14222569dd3e7b78293e4ab1c266611a35a5c759. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/PLC062365591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40003f8ae34a2b830b9989e62b4efc0ca36a95c10d6a2a622b3057099859dd78. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/PLC062384463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5eec3ce827dc1e0f5c038a06dd71e1873f331108623a61741f822d564579540. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PLC062404991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7538c1570569e2199e5c3501457921340e2a0cd7def796dee07bdb792526f9ca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLC062418102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d434ec68fdedeade91e060ef66e8344647880bec327f3e7b49e7e2d4abeaa5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLB382400697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01287d7b46e78532dcbc539abebb9aabe72c4f7160dea3689e4471e6754e779. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZDA72527973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d434ec68fdedeade91e060ef66e8344647880bec327f3e7b49e7e2d4abeaa5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLB382400697.