Franz Grothe (17 September 1908 – 12 September 1982) was a German composer, arranger, songwriter, conductor, and pianist active from the mid 1920s until his death in 1982 at the age of 73. He was a pr
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 0x94d8eb0eeab79bdf54da65c49a731a9de645a210fe0bc68139b3be924c0dfc25. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee52912e-3906-4c3c-8c36-6c8c095ed4d8.json and https://artists.proofprofile.net/proofs/artist/ee52912e-3906-4c3c-8c36-6c8c095ed4d8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Swing-Sinfonie: Willi Stech und das Tanzorchester des Deutschlandsenders, Das Deutsche Tanz- und Unterhaltungsorchester (Recordings 1942/43)
Der Abenteurer von Paris: Ich und du verliebt
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 0x5d3716ce2cdaf8ba73e32677f63f5f1f21c798823ba3dec045a6a6370a5d8944. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEL111200665.
Die besten Hits von Franz Grothe im Originalsound, Vol. 1, "Ein Leben nach Noten" (1929-1943)
Hab mich lieb: Komm, und gib' mir deine Hand
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x159aa9c31a31368f13e8868f58e14e118e7403b1161e7a20f5d12d1ca5ef53e7. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEL111300073.
Mit Marie mochte ich mal auf den funkturm geh'n
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbad8fb171bf0bda712d8f44b3bd7d2696f83b21dab728943e73c2683faf7065. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEL111300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6836c9837321944685bb4058c87b05119757894efc63366359e489d0796fd7ba. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEL111300075.
Alarm auf Station III: Mein lieber Freund, sie sind heut' eingeladen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90f24cb4300c1dac5396346376ae35f4b4cbb51f8cfb2d8c75f87b840126db1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEL111300076.
Winternachtstraum: Mir geht's immer Danke-schon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c36a3a918258fc37364f56b221478843df84a486c6cce4ef54382961b99cca. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEL111300079.
Tanz mit dem Kaiser: So schon wie heut' so musst es bleiben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae34a24a08a61a65bcc40fe7d031e0c650c89a5e86986b64f185e7a8f99a2e1. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEL111300080.
Keine Angst vor Liebe: So ein Kuss kommt von allein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d65a95a17e104154045279cb25fe17faee70f731a7ebbac5b615f824b66e570. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/DEL111300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f4f1826d2bc0b7749d426b63b2a06818991255c7914c9edefd9ae98cbc26562. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEL111300082.
Der ungetreue Ekkehard: Wenn ich heut' Abend mit dir tanzen geh' … Was schenkst du mir dann?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbedfc12e666a3cf00f51d436b476918699099e391776a2d7a1e9ca47ff0515. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEL111300086.
Winternachtstraum: Was ist das Leben, wenn du mich nicht liebst?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba372c3e68b156505324fde47553841f7f9b02a1bc71734de99386ed83cdde7f. 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/DEL111300088.
Ich kenn dich nicht und liebe dich: Wenn man sucht, wird man finden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e44059ef5e19605f99698eacc66df5eea722673db6d51c8dc172b6dd23eca44. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEL111300091.
Die Frau meiner Traume: In der Nacht ist der Mensch nicht gern alleine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56957a5a4383a63540dfec90bd8b3eabf042cb35d3493ea98208605ba9dfb8be. 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/DEL111300094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61a8e5453aa921dfdfb4976d1a60ac33ec2164a637387080b3a7159974aa9b6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEL111300096.
Verlieb Dich nicht am Bodensee: Heute ist fur mich die ganze Welt viel zu klein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc59614e6286de3cd9a30eed54e2fc9486516b0a49a7597058548fda94471f89. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/DEL111300078.
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
Rote Orchideen: Durch die Nacht klingt einLied (Paso-Doble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cfcb28b6edfad4501203395b426f8a76372a30cc791a16ff25be654e337580. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/DEL111300083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458389831a987dddc29116ef2f2b19dd035400bb08bdede063ec48e1d0a536f0. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/DEL111300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7969a24e96b530a2dfef8578cea639db268f2ffbeca5ee81d34c4e682326b81. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEL111300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6423656f6a16498321089bd0df8b0825c1001dfea6a0fe97b9136f64d197e155. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DEL111300087.
Napoleon ist an allem schuld: Warum hat der Napoleon: Es war ein Madchen und ein Matrose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3e0f60156defa9966429b84ec60ac96bc00724024faeef9c0f3bcebc6ee1f80. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/DEL111300089.
Der Vorhang fallt: Man kann sein Herz nur einmal verschenken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9494e833507b617e14a5fa71749c52265fac2af909072404457f0ac1f75500. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/DEL111300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcba7f6db4f1a28cc2b079540bebb0941305100fd7ce32d424146c6862587e1d1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEL111300092.
Ein Walzer mit Dir': Ich will dein Schatten sein
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e46eaae5faff67c67762406f2cae01a0febbc9834e18e08df66300a539d28b9. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEL111300093.
Die blonde Carmen: Schon wie der junge Fruhling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aa0f3d82d4c61c7b820f87917935d294eb9b08ef733cca6f2e0e356b154c64. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEL111300095.
History of German Film Music, Vol. 4: Es leuchten die Sterne (The stars are gleaming) (1937-1938)
Der Mann, der Sherlock Holmes war: Jawohl, meine Herr'n
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490a16040915321378f345f80c27a44ad0d304218a317823764f740411ee3edb. 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/DEL111200140.
History of German Film Music, Vol. 6: We Make Music (1940-1942)
History of German film music, Vol. 8: Tanzende Sterne - Dancing Stars
History of German film music, Vol. 5: We Dance Around the World (1938-1940)
Radio Klassiker: Ein Stück Musik, ein Stück Humor – Radio Recordings 1937-1944