Pure Hell is an American punk rock band, established in Philadelphia, Pennsylvania, in 1974. It has been cited by Bad Brains "as an early influence". Career Among the pioneers of the post-garage rock
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 0x5fbca416398e5d1e4c6e3e63615d50defbd50ec38cc5c8b35698bc954ce82343. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92c8b0ce-0b46-4b2b-bbc0-f4a545914547.json and https://artists.proofprofile.net/proofs/artist/92c8b0ce-0b46-4b2b-bbc0-f4a545914547.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 0xe372e3dd405e2c2d984bd5eae577660b91797310389c548fb15d1b337d4045be. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USCGH1010443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d1f5caeff78840fa3c2c393ce7cab0ec6840b46a42d87a6934fd12940004bb. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/USCGH1010444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11aacc2f2c3fab09b4dcc220a35d99ea1ffe61a703166a7be7ef4b73adbb6b4b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USCGH1010445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc715d7c0c2886d21064998398979f1d9ca06d05a42d9f310722db95252663e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGH1010446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464e6eaa8c035b20a2a745da20d4cfac73839d711fe5125244d9d8d0bf0de456. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USCGH1010447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfae4d28d45aa0d01f9317666199dc47b4afbfdc41a8246d2bc7bc2bf21c67af. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:21:45Z), 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/USCGH1010448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066c0ba41b46b2b254bed4504c8222d154ba50f199705af04875a93123dd0dd. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USCGH1010450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999a27b0f0a336de268abd15993e2aa7a35e8ec1ab7d16ad87d19dd1f78ecc8. 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/USCGH1010451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c1c5729b0977c0d63922a6a41235c810defa77f159545eb91a4909ef54fa8a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGH1010452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581e5655fd0044d0e13d2d02475c2f6b33aea6f83c8870a3328e89a689f718c6. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/USCGH1010453.