thumb|right|220px|Justus Köhncke in Vienna 2009 Justus Köhncke (born 1966 in Gießen) is a German techno producer and pop musician from Cologne. Köhncke was a member of the house trio Whirlpool Produ
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 0x7bcc435f1be4fa9fee6a288382efc90baac3f88a712a880dc267de262e88cd4e. 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/5c9c641b-9fe6-4e4a-9c1e-1a83c5d3e59e.json and https://artists.proofprofile.net/proofs/artist/5c9c641b-9fe6-4e4a-9c1e-1a83c5d3e59e.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 0x34dac8ff2eaf1dc1a5373e1a2d9d0e385580bdb65069baa7477d48d490d8350d. 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/GB5EM1401382.
Global Underground: Nubreed 11 - Theo Kottis (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e972498a63f02cfc5944502647cf0d948ee298ccc754f960504d6ae7a8c9c5e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBHFW1800069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16e39d20d9d4d040e6d211a3f741d5b0bd9ef8af58f458d8e87d758f3af37d5. 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/GBHFW1800058.
Parallaxis - (Traumprinz' Over 2 The End Version) [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b15fa956f0ceb786e5bd28a06f2dbb17b3635aff6de2aa8cd7b2674ba54a1bc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBHFW1800075.
Kitsuné Maison Compilation 10: The Fireworks Issue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd985d33d55f249f94376a979b54eac3d924205e270aa65ab978140c79d239af7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRU701000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca7892c1125bcea24caa3345f607e6c863f943481ac0b377ff15190fe8d9416. 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/AUGB20800167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c910cee8e49c6fc451037cb61e333b4493f072539277502526c5a493dedd38. 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/GBJET0800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca9d9b005ed4fe418c29eb52a049f379bd2ca8c80125e118157f2e8c09654d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEU671000156.
Justus Köhncke & The Wonderful Frequency Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x715a622ae05fb5045920b0ba265f91241c8048a6802630a85787becd8125dd7d. 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/DEG931791817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b75c0651b73ac38b99c8110acabe0b4070ca5d5f35bd554e6a2407d8b711afe. 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/DEG931791818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2f4943eefa8b1abc38f9c8e875a66306af98fa7b2a6d408a2451e5d50571e7f. 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/DEG931791826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a2bdc5e0ff142bcc17b1fc8a5efa6b00fa123123e44286d2665f92379b36f6. 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/DEG931791831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc602572542651eec5628511f5cb8dcd09a9f306944a920b3cdba4b7b73122d11. 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/DEG931791832.
Late Night Tales Presents After Dark: Nightshift
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710d3c73c27619d6aa0d442c67511494f2c928664aad64b3d27b1bd8b3fb49d0. 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/GB5EM1401379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11ab0013f4e2bafba8cc8cdefcfd99c51b2619ee8a4f655710a55264d64347d. 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/DEU671600113.