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 0x478b5846a0e0e0f9aefdf8debb54960e66829a83c851642e982bf58cfc58b31f. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2ef3bb3-f53b-4edc-8d38-b0ca645ef8ca.json and https://artists.proofprofile.net/proofs/artist/e2ef3bb3-f53b-4edc-8d38-b0ca645ef8ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Last Game (beat by Wilks. Mix by Vaughn)
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 0x8c9899035a685696f5948daf983dfd15b08715f6d812fb9367a54155c83b7361. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNWR2418530.
2Wonderland (prod. Dazay x Straightupglobal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf6dfa382b87ac89d00d01b2ec06403efd2d0fbfc24d39495fa735b310d2a41. 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/QZFZ62504413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6c967481080104f3b57aa14fde165c7ab59e274a1184c9ddcd7f454f1b9d27. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/QZDA52510046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c65e983a81190c29aa1ec73e8feb13abebe63c8c33ca51a817a5ba95b90cf9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/QZTAU2590174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79846f280ae814159cc306b5118c56e50500c4a814e23d08fd99de0759586d97. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTB42515210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4048ec4c51a5bbda74601d80fcd34239c5b0df0bde26b3acda176bd919b7d65. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZWFT2518378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8996e6b1c8016b73a8d4efdab5e0f8d5df0d5abc51a4d7981e9e83a9161ae82c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZZ7R2547542.