Friends of Dean Martinez is an American instrumental rock/post-rock band featuring members of Giant Sand, Calexico, and Naked Prey. The band combines Americana with electronica, ambient, lounge, psych
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 0x669b4fc4e9c1ece7d10ff0eb50f98f497609fc19f0755e92c9d8a1c4bc50215f. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dbfdf4e7-ba16-4c10-9af6-20361ad37871.json and https://artists.proofprofile.net/proofs/artist/dbfdf4e7-ba16-4c10-9af6-20361ad37871.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 0x40be51d9fa553ad17e47e88c5aef053e11d1e57b25f61178a42740f4264291f8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USSUB0310600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222901d0062109647696f1e82e93691a3d60427cfe97b2f9cd95878ba121b81e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:46:31Z), 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/USSUB0310610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd2fd703ca8e02c7b02263baf6b372b019e819d28000333d964d44d52f6dd71. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:40:15Z), 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/USSUB0310925.