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 0x187bd6d4e537c9d0345067d65ca71d499bb94829e09bd9857731dfa018cf60da. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84cffd5d-4b50-443b-b20b-ae1b70511690.json and https://artists.proofprofile.net/proofs/artist/84cffd5d-4b50-443b-b20b-ae1b70511690.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 0xabde6344fc0f40d7b5c6a0ecbd0aa32db8b83a286d43da0b3858cb38b4c346a8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZNWV2331880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356027708e44ff261c449ba30814c6936f457ef5da8783ba065e7d87c55fb804. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:23:14Z), 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/QZTB32344253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc831cfdb1de983af7967fc0911764e79fac9ad54f49f88fc68ef035128af056. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:23:17Z), 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/AUL1Q2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc05311525d8f46ce479565d0d081938ba4827bce2ab68872d03f2f9d2cfc60. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:08:04Z), 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/AUL1Q2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f91b50f4520c932fe3c40c69cddeb6f6667b81050ec3c46dedeb45851cb1b6e. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/AUL1Q2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2b2e83c68fad181871fb2f9de62134824e309e52ebdec554374fc13f17c56e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUL1Q2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359a0275e7d43a3cec9822581ffd4b8bcd9e04552a5e0616d1a07badfbdddd6f. 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/QZHN82535978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2c117ab2ccb358957e0014827480e7729c8396528f23be10fd09bef4122c03. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:00Z), 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/QZZ792557156.