Bernd Clüver (10 April 1948 – 28 July 2011) was a German singer. Background Clüver became a famous German Schlager singer in Germany and had several hits during the 1970s. His best-known song is per
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 0x4d403c75af10cb950332a13d9d2defb3a956b2e1fed21172179d1213a94304cd. 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/ee5ab840-4801-4e5c-9ad5-51acd77c51a3.json and https://artists.proofprofile.net/proofs/artist/ee5ab840-4801-4e5c-9ad5-51acd77c51a3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xb743d134b783ae3869cd0c4cb67a2bb8b64bef5b1955851b6f794ea467aeb07f. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEEG22381441 — a six-check JSON result.
Denkst du vielleicht, ich bin aus Stein (Remastered 2023)
Später muss nicht zu spät sein (Remastered 2023)
Besser ich als der Kerl von nebenan (Remastered 2023)
Seit du nicht mehr da bist (Remastered 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc37d52216f4654f6a3a60553164a7fb7a72795296bbacc41a65b25c73745b157. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC719401244 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea6dd0b0bba80892f58261e11786e68950ceac1456cba7027f29737ddc3f071. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC719600581 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2707688fc123700d1cc8f78a3b131ad713e07b569e344b9c6e236c7d4b38fa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC719600456 — a six-check JSON result.
So wie ich eigentlich bin (Just When I Needed You Most)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd88f8778f8cc6356e5dcf9e62a4cdd2952716707c735df581b09614475f69a1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC719800435 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92025983bd9da11af36dcbd6b9a50e10e1e35c31f2998e0a5dc029e422720350. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC710100025 — a six-check JSON result.
Der Junge mit der Mundharmonika - feat. Manuela
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4358e7ac061e75903d7fc7c4d474499c15c686b4cf0ce6ce98320f2826e75737. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC737200001 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77d0a30134400d01d7049a4a8cc8cdb21eeb81fece8132b1b8a1da53aa30edf. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC737500022 — a six-check JSON result.
Bevor du einschläfst - Tausend kleine Sterne
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a99669253339a6c6c868486a239a92e815ae47de4afb9a9b88bebd50a9531b8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC737400023 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aa715aa0513a2918ec0555e83a0fd50f62ac96e99d488b380c1576c37d299e. Chain 2 (Bitcoin): anchored in block 958585 (2026-07-18T17:05:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC737600025 — a six-check JSON result.
Meine schönsten Weihnachtslieder (Remastered 2023)
Zwei im siebenten Himmel (Duett-Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586fefac6b2fa6444cdf4d9000efb820368b1a949e1f481dc88c0452686faaa9. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEEG22380832 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e41f2f2c2c01b594386ae464744be40c1b2e4237323559020b5c94219022eb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEEG22481506 — a six-check JSON result.
Ein Stück von meinem Himmel - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134fba6853ae4f6018404e7d25d726acb5fb795f5a6112719ace7f01ab70cc04. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEEG22481507 — a six-check JSON result.