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 0x3b96906838ca75122d659b499c9ccac261901db25f0d57f981862de84e32eb45. 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/36f40210-9114-4b4c-aca1-9312b1bcbc76.json and https://artists.proofprofile.net/proofs/artist/36f40210-9114-4b4c-aca1-9312b1bcbc76.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 0x024d0843b2f281f6abba7eb4030bbcf6752266f7dc263e151a5a43961909257b. 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/QMPU51246690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8f232a20129970e7f7f0aca53defe90850b425221733027c08ea7d70a607be. 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/QMPU51251131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bd626fa71acfc36d03e48792b20fef939e85e01f54058bac0042040aafd54f. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QMPU51294485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6db6b69e5a85a409d689c75429c83bd8ba0b06ca620d863869f9b63450c009. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:52:46Z), 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/QMPU51634908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243bd9f98c1f5d4954d28f72f5597451dceac15c8741fc4b5b5fa393b9cc0dfb. 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/QMPU51737720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa897e4ccab66dbd44159b5c5d69a9b19b76d920360a29fa16e6ab810d602e2db. 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/RUA1D1806336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf342f7e41abcfa7fc38b283d32bff0ca8810a9b04fd0dc16026e576aee5fb5d1. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUA1D1816372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c603d526375a22c667719133f4bd4b3b32ce74d425305b188b9501681169530. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SMRUS0064843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0a3d26c972fd49ff80239c5f9733894c7f365006ec45dc547caa7d81755172. 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/QMFMF2019733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b30cae6b9584d307f4c2aa442c0a712093c5ab088e705bd45cc25497b10ec7. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:23:30Z), 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/QM4TW2234650.