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 0x1aa864fd2714fe29a019d8e6ef8e6b2fff6343f29407680e72eb478f22ac53ba. 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/3ab2e291-5d61-465b-af1b-dafb07eca2d9.json and https://artists.proofprofile.net/proofs/artist/3ab2e291-5d61-465b-af1b-dafb07eca2d9.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 0xe8bfc00f01cd477a6ce56ad4ff41eceba480942a1c166d4e0287c740aafd751e. 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/QZK6Q2047418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9922ce3cce1495a16ce10942f97c719975fd8c847dbaf2f87f039a444a0de664. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6Q2065580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0cafcc62af62f15e9666ba925c3532f6d4b34046812516f714fbc4b452ffff. 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/QZK6K2163972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52530bc7441655f0d79188a6d1c4f2d6ec79f3ec6119e9789c12e88dc19ce13. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTAU2100874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773d635712adaf7aeb4e4947fcdde4fdc841e36d0090624dcd6125c61b74b1c1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZNWT2226768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f976854653557aeaaa776a6f4494401a249ccc4d695d267d84aa56b5f005b29. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:08:28Z), 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/QZTB62222006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79385828a5725c4d733f743935429b3d7b281e970cccc688a30f1645b1532eb6. 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/QZTB22293842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fa461c7a20e29155b1300c25d3e8aaa308612f81194f7db69b42e255585fa0. 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/QZTB22293844.