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 0x8be809d840a0d33c9fecc25d49a6c5df7ace5d9ee5b571a146633f85b75aa570. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8236440d-baa6-48d4-80ed-03898c248eaf.json and https://artists.proofprofile.net/proofs/artist/8236440d-baa6-48d4-80ed-03898c248eaf.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 0xb5129d0a70fccadaf97e83177e1e45e9fa949d641387fb55ce32e2a625d1d920. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZHN52543236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6d57bd8508ff3977a75d1e2fa88d84b3ca897b43507da21447b01e5464fd6f. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:07:55Z), 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/QZHNC2587608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6c4c8f5f66b11062172f7b022fd5ddfe543c3540f099296b708964f3b2a6b5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:33:14Z), 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/QZHNC2587610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af397273d8be1a9bb85631a702b9ff21239bb105a946f158bf6e03d6c89ff4c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHNC2587611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad03ea43cfa4cab910d1b26b96de9ed2ad6d8f2c7f38c20dda9b4200b50178a0. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZHNC2587613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2315f349cfa3d29936df4615e536286a15576a7223f8b0bf76df5811f0fa890f. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:11:18Z), 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/QZHNC2587614.
caso Joshua Riibe y Sudiksha vispera de la playa