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 0xb9d77676dff2b8ed97eccf646eb079de7ed60f23f444cb93a7176386d906d152. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/578c15ac-b102-4a7e-8665-fa6b7ba6dbe7.json and https://artists.proofprofile.net/proofs/artist/578c15ac-b102-4a7e-8665-fa6b7ba6dbe7.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 0xb542834e50a0cf31bf62b48291925c59db0aba3ee3bac6c6f04f4f8c085c9aae. 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/UABC11600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a89db0a9e8851d078e2fa3bcebc9957ca0cfef65e2be1b4a66153d7eeda06a. 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/UABC11600019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf64870ee03ac8a173e832962b53c02bbfeebd485214f97eec5e6a1635f1d4ae. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UABC11600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd892db05b80e2208ed7dee0800a31b25555dece9d65ba776f2996a658f3e8d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:04Z), 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/UABC11600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8f0afbe2c94bbc48b2f667bf7cda7f153a90182bf253b2a8615adec9564185. 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/UABC11600046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c56328418308ec2fb3d7c430c3f1e13f293f833c8cd0455c94ff48949f00a7. 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/UABC11600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8483e24d6efe5545b6facff5da225c893951396a5a21a1d9c50d13f9cdf8acc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/UABC11600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad15d3f5768ed66daf5f2cf57f10a2c934fe2afed2f4c306a3d50eea75ee452c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UABC11600052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c84c9ea96a6aa7fcb0c72ecadb40d2a636557f05fb834ac8e5363d3eaf1549. 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/TCAIC2496363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b044e2babb2a8a84ce7c08419c250ca1c9587ad1165b93aa9fe356e1740e2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAIC2496378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a58cce6573772d71b9a768f3ce5f51932b04003eb5514d41d2fadfbf5a5e20. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCAIB2465340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6033e3a2fff0042e351a13446610dd0d2af45c105b154556316954270b2df6. 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/TCAJB2468910.