thumb|Manfred Krug, 1971 thumb|Manfred Krug, 2003 Manfred Krug (; 8 February 1937 – 21 October 2016) was a German actor, singer and author. Life and work Born in Duisburg, Krug moved to East Germany
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 0xa0269ba79c8572e88be398e269c8d0f8e5c305c825e754e18bf0760c51e27d7f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c555f969-d7bc-42d3-ba98-d5d60966e82a.json and https://artists.proofprofile.net/proofs/artist/c555f969-d7bc-42d3-ba98-d5d60966e82a.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 0x18287116be0882c24dcd766afe5a5f1a272f24d6f8fb8c4fa848b344b5c57ede. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:57:24Z), 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/DEC739400412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cf4bf4f6eb514ac3be16c716fa964f54da2076ab98cbc4c092a5a0774c676c. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T08:00:41Z), 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/DEC739400415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e5248008b34ebce8ae4cedcb6f5ac1c9177516974b100ac60dfef54e93adae4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEC739400421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d1b62f08bf0ee34e1c50e6d4c2021e891623b0469bf2194041e413a9857c5d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEC739400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63f5c0e014e6f4d018d5a640cd82a97f6ee841f90bbaffbdb41efa699b84186b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEC739400427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f11b35d67b26513c004507e29491ff5bbeae9f920cf4aab7571071320ca331f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEC739400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9850314420bf07fab2344ef727161d5bb02eb6b7c27e6ea50c3503bd8ad5067. 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/DEC739400430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6e218666e922cfeff6f7204e7cc3b4d126a09cbd5e2e733c0eeacf7f8aaf31. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEC739400431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcd3e67fafd7b01708ef232833daac40146772b7135324dd3fd15452d12199a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEC739500095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb028d2362bfd9d7bceae9f484fa1ec7172d774fc68e5bf0bff817b16b459284. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/DEC739400576.
Das war nur ein Moment/Ein Hauch von Frühling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18287116be0882c24dcd766afe5a5f1a272f24d6f8fb8c4fa848b344b5c57ede. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEC739400412.
Carl Michael Bellman: "Fredmann's Episteln"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e11abb4f9f3173c5aa20f19272839737d492fdca90239430afa96cad4a5d00. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:04:17Z), 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/DEC719400522.
Ever Greens - Das Beste von Manfred Krug 1962 - 1977
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bd1559948170aa80221e54ece88bfb893194d85b6be67229c8bd7e05f1741d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DEC730000350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0e3084787b23b433f4386955fe7d96f1a906c290f2f1d20ba468ae633aaa5d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/DEA340100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d70b1a4510d77fcf8b0292015776186f7deb09d8fb7a1509e21c7ecd3a10a4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEC739700579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9d306988835155784a070625aacef2ed34e8b0e74395632233f53a5a22b486. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEC739800304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fc691e02eab0414be44ac099455cd61f7bd9af743fb40838f5cba29e9577f8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEC739600167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bd1559948170aa80221e54ece88bfb893194d85b6be67229c8bd7e05f1741d. 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/DEC730000350.
Musik unserer Generation - Die grössten Hits
(Unser Abend war) Wunderbar! Das Beste von Manfred Krug
Noch nicht ganz weg (Das letzte DDR-Konzert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac3cfd18ce4951d43069f393f1269d21edae41a2a75e2f9ccbd7f9e707f6fc6. 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/DEC732100018.
Ich sammle mein Leben zusammen [Tagebücher 1996 - 1997 (Ungekürzt)]
Ich sammle mein Leben zusammen (Tagebücher 1996 - 1997)
Ich bin zu zart für diese Welt (Tagebücher 1998 - 1999)
Ich bin zu zart für diese Welt [Tagebücher 1998 - 1999 (Ungekürzt)]
Ich beginne wieder von vorn [Tagebücher 2000-2001 (ungekürzt)]
Ich beginne wieder von vorn (Tagebücher 2000-2001)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f855f8e27c149cffb1fc67b076599e6ab36b7acdfd4e5c06c741e4c22ae347c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEC732200035.
Die 100 besten Ostsongs (Die radio eins Top 100 Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865695073df329cbb65a9ee50181aea4cea410e32b1cad55ccc641fe0126cf53. 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/DEC739400423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d933b77dbd50cfb503d2d111fab34bb14360371b5555e86e666c68f99c840b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEC739400417.