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 0xdd4b8245a9fc022ceb37856dceeeb8e3c45fb9643a2afd98081f725edc4ec04a. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e79cb36b-cd0f-4e6d-b098-9dbae26378b0.json and https://artists.proofprofile.net/proofs/artist/e79cb36b-cd0f-4e6d-b098-9dbae26378b0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
There will always be wednesday - Extended Mix
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 0xc18f8be90e6341b49048ed89ca22206d22c748fd124f776795c843268b9e2677. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM42K2194452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6771a5f3aa55f29e416bbf048c8ca3c645f400d42b9c1e0ff9fc4825f85bf9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMHP2066426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116451840165d2fb83ddbdcc957a46f7c3e36820034327d7461eb6394e54a69c. 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/QZS632205726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700a22c02eb7c272b00678278de8bdac9ad846dc54f3600bdbe90b4f24c58bd3. 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/QM42K2382863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc47b974b3a81c9b45b5e3ba01c17eb8cba51b0edeece8215bfcb1f7b43cbe08. 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/QM42K2361760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef11b381fb6e62d29144460f7895476dc705d53290da18bca46f93d981fb39d2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZMHL2216331.
It's the way you look at me - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3ce65a8a4bbafca00515ac1850f9b4c9151e32efd756d8104c9e796497422b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS632222093.