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 0xa38547277cee467f799ba1b55780ad5983e3a73510acafa1c7f9da3ea69c2096. 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/f99a51c1-bf9a-492c-b7c9-b865552fadfc.json and https://artists.proofprofile.net/proofs/artist/f99a51c1-bf9a-492c-b7c9-b865552fadfc.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 0x66af09f8c6715fff918a0d336ceabb4a9931c014ffd305a18db7b32c1216c22f. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/RUA1D2133415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd058c9fb269d70cdd26a074c994262158a22847ece21a467beaa412e44a6357e. 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/RUA1D2287846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b63ea98d817daf2646c79bbac056d2bcca04e564a7d64eaf859f749aa4256d8. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:45:18Z), 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/RUA1D2297780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6135de0ba045c855496b341f251fad4b4616785b4ecda30cb7b80bd12d84d1. 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/RUA1D2308813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb414452ccea003c0bba288d8387ac26439a8615d84061f106cf0afc915b28721. 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/RUA1D2450684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5272b8b7d9cf564b27a23d3a19e97baa1a7e7a466723b17a09ae5e4dfb7ff1ee. 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/RUA1D2478757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653e21fd6e834d3eda8b4affa7845fba9f7c99e7625c773434d83b5af2c49c40. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/RUAGT2404794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14982647f3324904be74906b3d81a47b4fc590b0dfb0dc76c078ad3f7948d1e5. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/RUAGT2445913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe813c02e8367fd286591bfd02a2e03520516ee1145a572b5c0446737b44c8a91. 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/RUAH62421951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499f45325f6c880d08d9eb13ec4807f2bb210aa56fb5d5fb7fe936063b29e696. 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/RUAGT2516071.