Wolfgang Niedecken (, ; born 30 March 1951) is a German singer and musician. He founded the Kölsch-speaking rock group BAP at the end of the 1970s and soon became famous with BAP all over Germany. He
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 0x0ef42ee65a55a9373fb9401a879463ab613914dbf5bd211c190eefb2af7a7f8c. 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/b6491005-b7ce-4210-850b-c7f9c16a4ba1.json and https://artists.proofprofile.net/proofs/artist/b6491005-b7ce-4210-850b-c7f9c16a4ba1.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 0xdf004de0e61507b203ff2a3d4b497d0d1984754d630dd2d9ce201c13f64b6807. 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/DEA348700334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe44d4a6171f4e0873be2bddf525a4cad58964905972018dc2fac1d3fdcca8965. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:03:52Z), 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/DEA349500869.
Das Familienalbum - Reinrassije Strooßekööter (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b0c0bce0fd62ccf96917b999e3136981f5e1607a6e64f9826bd0cec8f950e4. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEUM71716990.
Wolfgang Niedecken über Bob Dylan - KiWi Musikbibliothek, Band 11 (Ungekürzte Autorenlesung)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x773cc9179597e4b0f695fd2c61d69a7fcbc646d6944aa766edc3f6caa31c35e0. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/DEUM72208237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b22deec0fe742abaa548597502c7bd701c6b58982160994c00ef156d1b27d75. 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/DEQV21500367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd55df19a67e9f15473bad9de68cca44f5b8d0d329dec3f28db3dac9d5dbb7713. 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/DEA348900510.
Wolf Biermann RE:IMAGINED - Lieder für jetzt!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a764cf50f5817bb7a6e0953057d1e0ed584c4c57e183c5f3a307c1536143916. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DELK22300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099d4eab25a20bf22d92da7c5ebba931a62f369c45799ac1764d30741048146b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DED192000102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x202ba89edf47cf31e9e098c90ff088336bdac12043a32147a765e1db36e2ae6c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEQM61200045.
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