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 0xd72a148fa8680dcc190c06d02c28ab9ca3b0fc5ccffe4805fc5bb5294487eb00. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ee36c6a-c4d7-4327-8a07-5174555d5084.json and https://artists.proofprofile.net/proofs/artist/4ee36c6a-c4d7-4327-8a07-5174555d5084.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lonely Blue Ranger [with TAKANORI(LL BROTHERS)]
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 0xbd8abeddbae2c7bf4d92fe85adc0e4c88ee9e3d42c21f53d3f90fdcb406f5ee0. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:10:34Z), 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/JPY201606632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a694dd3d6dc4f4ab002524bda4c5c4a4d6f1e09362e966379b58ab49f34e76. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCJPL2098342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb1e3eb014b47119deb0f137da0d418968ecb105038a96473fb0c91e1dfb4c. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:46:36Z), 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/TCJPR2250192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81b7796e04a53b00b284ea8ab3c9520b98e07d705006e821df78543e070f436. 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/JPG401400101.