Underminded is an American hardcore punk band from San Diego, California. The band has been on hiatus since 2007 as its members concentrate on other projects. Frontman Nick Martin was in Destroy Rebu
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 0x61eed1edf8371c9413dcd27e1214c4d8604d7e413f1be707c78ebff421f1eafc. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/553c9679-8c98-40cc-9758-4b89b2f133f6.json and https://artists.proofprofile.net/proofs/artist/553c9679-8c98-40cc-9758-4b89b2f133f6.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 0x9e7ebbb4a766560c3ee7ec0cb50d02f2d52bf6338466dcfdca48274ebc8c5196. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USKFR0400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd900b4f176e38ad82dd4a04ea96e598dd04ea2a102007f46fec6943fa0354a0a. 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/USKFR0400429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd968333464f056720981409a07cfc2cd6eb7233a8a053a78c56658eb575a9ff4. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:44:12Z), 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/USCG40710083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ba9eba0a3579aa76e0883878a8155931df85598792b43924b10bf05683fced. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:35:27Z), 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/USCG40710086.
Punk Rock Is Your Friend: Kung Fu Records Sampler, No. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06522e6b11044dcab6acaf732e3e67bbf429ad854b32bd1d4c312a4109a0df8b. 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/USKFR0700829.