Brutal Truth was an American grindcore band from New York City, formed by ex-Anthrax, Nuclear Assault, and Stormtroopers of Death bass guitarist Dan Lilker in 1990. The group disbanded in 1999, but re
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 0xb04427c0a2dcbaf33f8c04c59c37cbd1aa17ccb6a2c209cb77b9425688748bc7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30f1b69b-f7da-49d4-bc96-25a9fabc256d.json and https://artists.proofprofile.net/proofs/artist/30f1b69b-f7da-49d4-bc96-25a9fabc256d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Extreme Conditions Demand Extreme Responses
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 0x379a7995c95858087584c1187cacf462d705f59139a18961cb5cb8754b43c248. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPB0401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb391192c80e6f16c26363faf53a8122ebcff710fdef1d605c7f46cf72b492ccf. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBPB0401412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f8cff86ed12b9630c33c05459104726c61f40c7b15614e9b1b991f26604b0c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBBPB0401418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x642edf73990f3523fc8a857827c11abccb668ce76701fd9c824fee0dc3690dce. 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/GBBPB2102624.