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 0x2c72f386eb2af120c0d56d28318ec3e03b0c2169713768d6516d374653745de5. 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/64d1a3ab-aabb-4e80-92c5-6da30db938a1.json and https://artists.proofprofile.net/proofs/artist/64d1a3ab-aabb-4e80-92c5-6da30db938a1.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 0xe1305ecedb44926c3961c05bcf1c348872a96320dc9bfa02ddc71f42cc47bdab. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUKDT2400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb0d8086bfb81fc86122f8b8e85db63bdbb929cdfafa94097e2af2fed6172ba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUKDT2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd8a7e88e63ffd7d89e6ec73ce95c533ea8bec387ac790f7e91d2c7b4111256. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUKDT2400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05550f343b136631f02067a9f1401ad2f25f5281ca4aee47d4904740af6a6d3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUKDT2400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905180cb5ef64ca93d939a23cf099c3fba5f8a023e409c03983010a5a9eb13fe. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUKDT2400164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee01aca7d93c44f1e0c153ddfc54b35188953a14f9358ecbffbdd93e12d9282a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUKDT2400073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd756266d1bc6b76db5f523334750311e6a5c586f1db86e0a66396a4b17fafd3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUKDT2400163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d32659579c7e586306d9bac6c11584a0c5fd74eb38671ca3af0e6aa98c9718. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUKDT2400072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3661f4165f404b74fad7effbe222c1ab54f92dbd949d9dd7a91628839ec32640. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUKDT2400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf481475570e1845873a36fe6eb20b3bd5359d9a83de06d2edeeb696a2d4e26a4. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUKDT2400071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e9f923885f20db906ae45667c2c801ad1c8d8928a5d55a88f838b3fa8e7f168. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUKDT2400070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d67b9518c25f3a74ce424c925b99d7e0a5bd873b02b292a06bf2dcea2b5dc8. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AUKDT2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b53b3e2ff9fd81374a125dc0a94c5af6813d06dc398af1bada5f0ffe31ac49. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUKDT2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef009decb075c18d56e538799e771aecb57fb7d2ad9cb856e2095409fd111423. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUKDT2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaacc1ee4af316a1b7ed7d3437269aa495e5a1c7069738a176db231c5a035761. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AUKDT2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07782817d793185e56b317720ea4ea331325809685fcc67ccf3d98cc6d7955a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUKDT2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d67b9518c25f3a74ce424c925b99d7e0a5bd873b02b292a06bf2dcea2b5dc8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/AUKDT2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07782817d793185e56b317720ea4ea331325809685fcc67ccf3d98cc6d7955a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUKDT2400020.