Klaus is a German, Dutch and Scandinavian given name and surname. It originated as a short form of Nikolaus, a German form of the Greek given name Nicholas. Notable persons with the family name Billy
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 0xdc1cb84fd05d0d58d0efcc63efd985993e23c299ad06c2a643b2d3f4903b6e16. 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/6ffdd109-cf6e-45b6-b72f-33d1bb87c954.json and https://artists.proofprofile.net/proofs/artist/6ffdd109-cf6e-45b6-b72f-33d1bb87c954.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 0x84325bad70800682d6ae1e13a863cff2fa945ea7acf6867305de88b82c086501. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITU9F2000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d353e75c4fc6ec89cbf0eedfe82ec68416bc4dd6b9a7e32e980dc7b3f2375ac. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITU9F2000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b08b49c0a9aaa1ad06e97b98ffa10b3577b1da3aa7ed3a330c50a727163ba3. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:19:57Z), 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/IT7I52100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20da45c2aa3a01400c602710404cecdcc51aed83692d07d961863eb24871f3d5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/IT7I52100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d3b8fec4e399ae6ba5da4431a416fe6133b839d7191b4e64b7a93960a0fdd0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IT7I52100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6388bdccef65d86e3da225f1a7916af2903ed89580a3e3cb3e0b59cc4615d853. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/IT7I52100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1d9cf8e0b839a593d0249912ecaf2270b5a2faddeed0d98bf14782c0e96934. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/IT7I52100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdca77756fcf11e1c0fa890df3b0a458bd59be24314bf14cf7d6f33bf74dfdb. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/IT7I52100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750c3d0660b1eccb5f3bc90cf65547edf53aa26711c5dee9752f7c1f41a8d3ca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/IT7I52100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d46cb9b17457e34c8ee827379674ea41cf83095ad0f3971da7b55d4dc52d8f. 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/IT1S92300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c5ca76e092439deb39c93176b6a3d9ec94da5bd8fc8c354e71615131eb0d29. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/IT1S92300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a06449da541723bc45614c845b6f64ec27fba93b073d898d024e254cf92b65. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ8B2349078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9feaf62f50e6da4ef2359dad401318388528414178b2b9a126d07755ef45e82. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/IT9892400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5707751b77dab9c07eb2582581558fae0ca228c71b4019446893195dab98f849. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:38Z), 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/DEH742437328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a8977540001a1ba45e4f15cc248f61724d1f77ae5c238caf6ec196952e9d93. 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/IT9892400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594f93bf69b50ff093090c9a4e3bae7197c7e2bf7ceb3e6d359bc10de364748f. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:28:43Z), 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/IT9892400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1213e789792b56c74b509867ed2b65179061a50dfea87e07f3592a0fe708b60. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/GXGUF2500075.