Helium Vola is a German "electro-medieval" band founded in 2001 by Ernst Horn, who was also one of the founding members of Deine Lakaien and Qntal. Helium Vola interpret medieval lyrics in a modern,
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 0x78af05fadcb61a785c492643a23361c7af6647b376fce1d2ef8c330ba5ec51ed. 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/4c987b4e-61af-4a1c-812d-33163f79ebf6.json and https://artists.proofprofile.net/proofs/artist/4c987b4e-61af-4a1c-812d-33163f79ebf6.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 0x0a73c37b5107583c205eb31e1ba1cab2d1ef1a376462d9f8b19f0d5474a8bc53. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEM520100037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4be202562d3f70f90dec52e6decee550a00f40d156ed8736411e4a209332372. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEM520100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddac85e87dce58795b93d16204c20a918d71c46c36f6ab7bcd7348750224ac46. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/DEM520100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfbf58408155c0e8bfdde56a3c4d48f1b98a8c7ac4a39a4797ac9dccf7901cb. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEM520300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9a3e6d859c25299d7f825bbfaad24527ea9f78151199e7b244e7328fbd50e72. 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/DEM520300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bbb5000664acc35c8dc5d05befc580431cb9b4c94ec8732e4edde9188870c1. 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/DEM520300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1770fa4350ef10802d9d51067406f557a082f805b7df4e027df4c094c7aaa998. 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/DEM520400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd94c903d03aa5ed54a41fd8ac3176248448a2a963feb0380b5d8cb56788cb02. 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/DEM520900014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b170278337abd2a34002cbc1994b770b9c7b6075cd68bcb858628d01123a89. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEM520900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96c2fc9c5525d1470dacd50ecdedf5e80176a42e1cb9c251b03b111428edd33. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/DEM520900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1218f4c33593921fc2cbfded7190bdb04ee117f7954ad2c02d815a97264e7. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/DEM520900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e1726b3b62552cb5a895ff60529fa42d76bdde6c5251543bbbb8dd722b1962. 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/DEM520900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7064be9571403f3ee73fb7b38be7d5a6749665875548267a3268bfb733e47cc0. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEM521200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9112a63ea4a3a108dab38e1074fcb4e1a36b03aa1c1d165bb02aff592f14aa5. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/DEM521200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9c999dbd28dc87f1a3b09714f82f8b3bdd45d9c0ccae39a17600a640dfab5. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEM521200001.