Hellhammer was a Swiss extreme metal band from Nürensdorf, active from 1982 to 1984. Although the band's sound and style were heavily criticized and poorly reviewed during their active years, they hav
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 0xcae6883cbb8e0126b0adaff9dfed7d5f3c287d7e6704d133e5019d107d89c535. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ad823dde-da6c-441a-892c-3cc2c47e9c10.json and https://artists.proofprofile.net/proofs/artist/ad823dde-da6c-441a-892c-3cc2c47e9c10.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 0xb1bfcf6b342fa02df80633d711d686f8995222dea6ece5a3a4618a65a61e23f0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb25eb77169823c8d90cdb501950043099317a438b7dc48e58d0acf13586dabc5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ba6f36653155a12fa5b4be30b4e8e3414a6c2e24c0b31a4227df48d590ba06. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4E40643919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56e34ae4f40c7bc44fb238abe2ee1bf8ac4908b23d7158cbfe26035727c2561. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643902.
The Third of the Storms (Evoked Damnation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c9ab6860fe038ce5485f4b187d21ee23140007284036752c1c865aba2c0b3c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US4E40643920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd2f396ea10835a4b727a38e4b3344e90b3c5261b189a2f286416a8b5b6d93d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US4E40643903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985cc5862c482c326a8de78661c3242c95e97e536627614a3131dd42c289fd14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/US4E40643921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x756f082d7da235da2466ca8700ce0db9f46ab13cd94e3877eff3f020d9ce8975. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5effc69660a1ea8f21a2d3ca8181dfd5ed5b906924f27f0be197e0f2c89d1770. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e7cef96b4af8eef2b9e9f629bede5484bd7196d926d99d6e53062ed9dc1e200. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8ec3926f1d25d4c1de7c0b9d87f50b8af3daad11776aa235ab3fd693aa1d6d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US4E40643923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b3ca5ec3c184e89a7dc01e602b612b8773cb7f945c6c7a16a46831b0af0ab5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50227d0899006c3db8c8955d849c4c0df689d73efcc983c4539113a5fc2e3614. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65bfa32c056b4823fac0451f261992c5b3688c63f7aec9d2c83acf7480c25aae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446888597a823a17ff9c0894c9457ebb26bebb2be8c7dd28490b07e1166156b2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba67fa99502cd4ceadd676598f7cdcaa990102d73f42e81a6bf33106e08a0802. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93c1393992cd87f6890219423665946c748b242702adb467a6d2fdb6eb827a04. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1265f9372a02c4d2d21bbffb706e88281865a3f389ca2f9fb4377bd16dcd5bc9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9939d8ee3cfa4e82890a371d141793772cb6a5b3ba6c498cb513cfb2a8d89618. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US4E40643910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd20dfc060abe6f77b98af04a4e60d3e0b18895f5e5e839f93b019db7496912c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x365c5dfa6ce22f7093cb29f336d9f135608a6348861e5173e999bdd660f29d8c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US4E40643911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b57b590000bba85bb960acc62cb20c34484acd2a745d7d7f49a3a267fc189e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US4E40643929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f308c2ee4ba3645c732150b004269046c6493cdb3a076ba27f32a25fc69bde. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US4E40643912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468e9bbac41feb86475e564f1e381d2b7894316aabd5b0dc6abfc4d26f213f01. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US4E40643913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ccea209ccb30a2e68aa4ee005b6d921c250534f498d7b39194719177586745. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US4E40643914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d740b8b38bce1e306720a1ffc4ecbf463d36216165dc4b4bd45a545bf9990. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US4E40643915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7152bbf282ac46d030c6fe3c142374b3dc74bb7698a510a574c3fb0a245645db. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US4E40643916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b2ad0084d6d62d75b33872cc71146d36869bae821ca2fe23d58bc3cf35f710. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:19:27Z), 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/US4E40643908.
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 0x18943a759df91defaa3378d3e8b8da6ca914052869325e3cded79c3e23e5b135. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/US4E40643917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b2344610177c116ca0d3c14615423285eaa40dd288c37dbdca897398df8b3. 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/GBAJE0709142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e039da6008c23b686cd7f6e8d3947633ec95acdff5f2be889d5aba09cb4d7e. 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/GBAJE0709143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa595726b73b7b706533931af19bea95f116626d562031363bb76bc024fe0ebc. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBAJE0709144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538c2eea220926c591e9b6c6dd223b33bb7c4f325a8f6bc073219334bd6c5335. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAJE0709145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59737ef7fe512d6878a009547a23fd30dadd5454e57f29622702ca09628a079a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAJE0709146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f9c423776155be86d676c9ead08f378bc2488acdb1f4930a46698fc605483a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAJE0709147.