The Hellfreaks are a Hungarian punk rock band from Budapest, formed in 2009. Originally a psychobilly band, the band switched to punk rock on their third album Astoria. History The Hellfreaks were
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb304fe5127d770f2b41da4cb8e91b5b02a1b644a70fbb542ce79a6264124656e. 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/d412314e-a12b-4967-9420-33d9d062ed82.json and https://artists.proofprofile.net/proofs/artist/d412314e-a12b-4967-9420-33d9d062ed82.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe322947135fbc3e475d9051cf4964750a73569236defbdb7d4e6ce431dddfdd2. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CH6540877447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d2a1cabf0b5487b790b12275c8cf0b45d8ddec4a6cde055dd9e49e275f07f7. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/CH6540877503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d463660b16cabcc323ef25c36a407507b0360ed9f5b7b785c877ca3c881aac. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/CH6540861097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x508b9a4201492af53d898d89fb7dcd04e82a8a72640f00474ffef3103e2ba584. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBLFP1952714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67151693ea0d6fd31eede374075806ae1e70f9ab594a7c96294cce4c4c85523c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBLFP1979988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d0ff69664c9b3154defa672b810cf8ddb39858d6d4e4b107b260ab2627404ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBLFP1979270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564b2bbddddbea442ed754e1a6f32f55abe730aa025a0b81c1041199139f5024. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBLFP1980003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8fbe3dc6ca7afd950f5a6190060614504d223785139ce399d1605c0592a0c4. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/GBLFP1980008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970e8829ba3b7a8c37a7e9bf0e6565cbaa239ce031feb746af29cb9ea052eca8. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/ATN262210803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e818d03a1aa785ca3069e2d0ebe2a1e848ee593be0ff5830f0537fc48b0d69a. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ATN262210806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f38069de56e22fee7595e4e3698ea5fd531907edb69b5ebe543c5b2b749538a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ATN262210802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2bc6e4dc65a46dcfe56e263c5903f7e5251c4513bac38ccc07505c2d6736b0c. 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/ATN262210804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e1b7364249faf97ae589f8748397380a47415b20aeebc16599b6a11c662341. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/ATN262210805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x232e42e6bc902e3443a92f0bd0a99d422eb8de1cf967c8097511642f9a5b8ea5. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ATN262210808.