Donald Edgar "Gus" Backus (September 12, 1937 – February 21, 2019) was an American singer. He started his career as a member of The Del-Vikings and later became a successful Schlager singer in 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 0xba46667843904fca6aca79e0de55881973d5a4d8c98cb8a5510515dbc3737dac. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3506c81e-9336-41ac-88b6-8a22100f50b0.json and https://artists.proofprofile.net/proofs/artist/3506c81e-9336-41ac-88b6-8a22100f50b0.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 0x71583204c0cc4638f7cbc3a7f4e14f872389bbcb52875f9c982b1a1a712c0f51. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:56:58Z), 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/DEKB72057279.
Lieber Maler, male mir - Die Singles 1968-1972
Ein Koffer voller Souvenirs aus Germany - Die Singles 1963-1967
Sauerkraut-Polka - Die Singles 1959-1962
Wooden Heart (Muss I denn zum Städtele hinaus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b98f02ca908c26f84817626e7d8c1d6aecb509f1a3f1d1517d285885274cf48. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEF066104620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581a239478286d985bd68df18338156ea928d0980d27ff7dae6e26cbb6530dca. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DEF066201370.
Da sprach der alte Häuptling der Indianer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb2004827d8e4d6ac1c81c64f9fe88dca8f0d39952498f40e70bdc13dac5cf1. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USA561163687.
Why Not Deutsch? (...von damals bis heute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc042fd4309c65d1fc45ba9aee9d613e7b485d45a428b3fa8252cdb4d0d743d9e. 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/DEF066301260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa063d001f75c045391ba88057fc565d25e055b0543719624c1c71c7352a5896d. 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/DEF066321910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24ea32024920b4badc3dd5f732f8b44d71cf3517045222452cf67b9430bb593. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEF066820660.
Der Mann im Mond (Original Artist Original Songs)
24 Hits (Da Sprach Der Alte Häuptling / Ich steh´ an der Bar und habe kein Geld Der Mann Im Mond)
Hör' doch auf Dein Herz - incl. Neuaufnahmen seiner großen Hits - Mein Leben in Liedern
Masterpieces presents Gus Backus: Hits & Raritäten
Masterpieces Presents Gus Backus: 10 Greatest Hits
Masterpieces presents Gus Backus: Da sprach der alte Häuptling der Indianer / Der Mann im Mond / Muss i denn zum Städtele hinaus (3 Greatest Hits)
Masterpieces Presents Gus Backus: 5 Greatest Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d94f92478a04108ea610c5649a9e14949a04c40387bb84da3735158f52ce76e. 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/DER751756238.
Ich hab' mein Herz in Heidelberg verloren
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359f022e345bc8d8a10052dd24e8caa3489c16be9dd7c59e805d36e19948a44b. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/DER751756243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6807530544a1c9dce477e8f5d0282a75df2a884a4b5f52a11362474f2e3c5d3b. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/DER751756244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b685fe5d2d1bccadfb479d0201081cb0ba3c542790e38a4f840778fea21f132. 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/DER751756249.
Gus Backus "Ich hab' mein Herz in Heidelberg verloren" & "In München steht ein Hofbräuhaus"
Wirtschaftswunder Stars: "Gus in Germany" - Gus Backus
O’zapft is! - Die schönsten Volksfest-Hits der 50er & 60er Jahre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53440565a26ae9a09de34f33f9e30797e45b408025b1866ee5e1b2aec297fc29. 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/DER751646913.
100 Deutsche Schlager Hits der 50er und 60er Jahre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f28617adcf3dd6f43821baac3d5649e43cedddec3112c95a9a49a7b89131e80. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEF161484207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc000eb85b934a39bbb2c7150bbf7d199a28ea970445abc56080578ae122a8bea. 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/DEBL60368578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afa4ed6d901854a972752c3d9dd10f0ad1f6e5b2451360d5f67afc6304989a3. 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/DEF066315580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890cc48f3c742c7fe7138eddcdd1e37595a95e0a5f9d5e9d85250a235d152f22. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/DER751646907.
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
50 Schlager Party - und Fetenhits, Vol. 1 (Deutsche Partyschlager - Klassiker)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748e40fd4d192bfbcb618e692e4b392c6b345e9d3abbfd40d408e48d6f84223a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEF161484202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6c4c8334e3bb3fed704667b9cc4b5dbc627d3e9e4ac5e6ee726a7bb5ea990c3. 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/DEF066201780.