Wolfgang Dauner (; 30 December 1935 – 10 January 2020) was a German jazz pianist who co-founded the United Jazz + Rock Ensemble. He worked with Hans Koller, Albert Mangelsdorff, Volker Kriegel and Ack
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 0x4fdad52ee4f515f9e0965e48d411b337913371a89d2610aee6ad2e5805023e3b. 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/144345ec-3045-4cb6-a3f8-5567de7d02ac.json and https://artists.proofprofile.net/proofs/artist/144345ec-3045-4cb6-a3f8-5567de7d02ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Elektronische Mythen (Dauner // Dauner Elektronische Mythen)
Psalmus Spei for Choir and Jazz Group - Live
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 0xd44b65a2269b928d28c295a47f974ad9a1f0f30d5e7d3e06b9c6c7719a09cf72. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEPI81502951.
Requiem for Che Guevara, Martin Luther King, John Fitzgerald and Robert Kennedy, Malcolm X - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2eb67ce8804ee89a6b99c2179ab7d3702d350cb505385d3dda3634966c9fce. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEPI81502952.
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 0x14e51762a68f615faa47f174c98214caa23472489f6c0dccefef023943b101dc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEH842100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa34be614005d0417a0eaa801ea3c7634cf1714d755e3fb61991a74a66ecf93e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEH842100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8f6499afe9b6e7a04e79aca56173f0926947f2187d63bc63009de99102dff1. 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/DEH842100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c1f392f9824d15c5a602ca995bdcecf68d42e3b67234166a9e48b721b8b1d7. 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/DEAP72214810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0ecb812d8e76263c9e0392890651276adb1eccc01a12fe139955abe384fbcb. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEA116502160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd07feb8c4d70736a06ae3b459ae12d123f15c45231837244f827fbb1650dfab. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH842100333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0214962e1ebd27ec1e2a71305f1193ab242748400a36886332f1495bbbe4c12a. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/DEH842100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d675aa9d1e943704a5f6b057a71abc29314037211d006c24aa890469533919f. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEH842100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7138086754b0c2e3350f21c2b72c5f8624c9ae78118cdf35be1fe17f9e02c94a. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/DEH842100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326908546f2ea0ba4744d005a32de5bcd4185241967b5dd64ea9fd3387c67a52. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/DEH842100339.