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 0xa9a8ae37d4ed0de6dae98e2ef3645bcd14b4c07563882c32fe1142f3b644db45. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6ed5585d-8f76-406a-9f78-4b73be0321ea.json and https://artists.proofprofile.net/proofs/artist/6ed5585d-8f76-406a-9f78-4b73be0321ea.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 0x77f83ebe02a9db917e1a14d7c1aa14f17edc6c9ab1d0a613f96d8c405c30d6d8. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZNJY2441639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69739523806c2cf37ae9fd9fc19b706b4286135cd89a5084f81e59f8e26d2673. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJX2498529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28dcfcd309a2fef53f95388070739920c1ca8f6f3b9068eb6a9285d8a37656a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZNJV2471888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a32cba1e4ba9f5b8139a680c677a1f98d4299abf1976f51b2d0375a6d4c9df. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZZ8B2467609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306e0c8cc9783c9e2d5aa27c173f6a4d4fdf11332368366aba62267cc56b35c5. 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/QZZ8B2467965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde2ed823ae83100f9c4c4de050a78c2946c7bf990ab72c7da4f6f829117b366. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZZ8B2467971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36df704498b94ec566dce7bea2430f91c51f52694aed38ff0be62d235f7d786. 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/QZZ8B2467977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bda63da03b7a182fa219f4361e874f144e98c8ee3d9a26cd6516ca6d92de0d. 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/QZDA42531930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bc35529ed02d45b30e0b23b8df04e377e2f7b3ba427d36d1adb193c53ce456. 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/QZW9K2457194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e4d83447f8aa76d5f669daf59d7a9218bb36552e3c2fb0fa8a16ee9c937c5f. 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/QZTPX2494695.