Whirlpool Productions is a German house music project formed in 1991 from Cologne, consisting of musicians and producers Eric D. Clark, Justus Köhncke and Hans Nieswandt. Musical career Whirlpool Pro
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 0x57e56e2f6411efc08c71a5595330ad06686ea8046196a938bc6040d0341266c3. 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/deb1a71f-fb6c-4e3c-a565-79035ff9e3e4.json and https://artists.proofprofile.net/proofs/artist/deb1a71f-fb6c-4e3c-a565-79035ff9e3e4.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 0xd744d65e45ffc0280dfa078ae672bca27214715950fedc0b7d826f4522d7da15. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:54Z), 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/DED579605090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa482d2632f8533beb2e4c215577bf9e7584bf237c7ff783a6932f391cb597d9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DED579605120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d15375702a7cf5873c6067d6f27da0eea8d08c01a140cc5596f5a4cfa7a23c. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/DEUM71717838.
From: Disco To: Disco - Tiefschwarz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437c70b0da6e6c281cfddcbbe2ce3174f6ecdd691aa4bc4d7de98c03deaf3767. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEUM71717837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f43a8a454e1ac2cbf2dd81603a72c341c0938cda2452cf31f080b1554788c37. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DEVY92400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa482d2632f8533beb2e4c215577bf9e7584bf237c7ff783a6932f391cb597d9. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DED579605120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa482d2632f8533beb2e4c215577bf9e7584bf237c7ff783a6932f391cb597d9. 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/DED579605120.