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 0x7f9ed3c3a5470f5d4d8a45b0a9f825bf867440e2f29478b04541c0931e26c8c2. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af8fe6b9-5d3e-4f10-bb5a-c3fb39e4f6cf.json and https://artists.proofprofile.net/proofs/artist/af8fe6b9-5d3e-4f10-bb5a-c3fb39e4f6cf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Berlin Swings, Vol. 14 (Die goldene Ära deutscher Tanzorchester)
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 0xc0a4cde295830d617eeec19d576c5125ec59e53d3dc6c6c76a9afa1d428d2d42. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEHB51250535.
The Golden Era of the German Dance Orchestra: Paul Godwin & seine Jazz-Symphoniker, 1926 - 1933
The Roaring Twenties (Die wilden Zwanziger), Vol. 3: Das macht Baby alles nur aus Liebe
Die grossen Gassenhauer Vol. 2 - Von den blauen Bergen kommen wir
The Roaring Twenties (Die wilden Zwanziger), Vol. 6: Wenn du meine Tante siehst, ich lass' sie grüssen [Recorded 1926-1932]
Populäre jüdische Künstler - Berlin Hamburg München 1903-1933
"Ich hab' das Fräulein Helen baden seh'n"Die besten Hits von Fred Raymond im Originalsound, Vol. 1 (1925-1942)
Ich hab' das Fraulein Helen baden seh'n (I Saw Miss Helen Bathing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10393cdf52be5fc4a8ba08d9b5c1d15b186133c784eb78fc42e2f9f09224aa2. 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/DEL111200792.
Berlin Swings, Vol. 20 (Die goldene Ära deutscher Tanzorchester)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7dd78c4e4cac04f6cf057b733bcd28f0875913570dae26002a937fa8f35dc4. 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/DEHB51250695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a7129163061197fb0d9726d387769db550ce48fccdd3c298dc83ecdcd20a60b. 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/DEHB51250702.
Berlin Swings, Vol. 13 (Die goldene Ära deutscher Tanzorchester)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda568c95263e2b161847bcc2c1b389f20a3561531bd5bc6ce35184004f1a5255. 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/DEHB51250507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5dab2de19583376c72c09b2d91bba3e475b748b0c365803bdb429ddc2a0195d. 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/DEHB51250520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe871cf262841bc5322320dbd28327a8ad2ba56639879346c0b5f0e2df6d89a. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/DEHB51250529.
Ohne Mäuse keene Knete (Songs für Mittellose)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc222147062812117b63ae0dfafbac727639b1dc367ec75cf2034ceb96ad4bf8. 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/DEU240404588.
The Roaring Twenties - Die Goldenen Zwanziger, Vol. 7: Ein nettes kleines Fräulein
Schwule Lieder - Perlen Der Kleinkunst 1 (Disc 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2578a7d8c739ab576365b940a2b3d0ecd66ad68caa047057191413c4765a0b. 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/US2Y30707301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a621f715b0284004fcdbf9e26139c35fd6f906b347549b04dfebd345f920143. 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/US2Y30707313.
Icons of German Cinema: Hans May – The Forgotten Composer (Remastered 2016)
Veronika, der Lenz ist da - die schönsten Schlager der 20er & 30er Jahre
Pump mir dein Gesicht, ich will die Großmama erschrecken
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db7be5d4d15bbfd0f6faa2bff4483cf14e58951370c005af152a6bcb5add3c0. 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/DER751648408.
Wer hat bloß den Käse zum Bahnhof gerollt?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aeda50bfa8fca1338b1e34768507bba412e261424f187f2c88d9944ded7f6bd. 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/DER751648439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9af877cf8709dd3b2d5d92b3ef4cc84f7d410a85a21c246609536767553971. 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/DER751648448.
Dein Ist Mein Ganzes Herz - 2004 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a23e61b373a8c80e408ee719748a9825c46911f4b1c4704dece55e3c825f60. 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/DEA340400602.
Heut' War Ich Bei Frieda - 2004 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ec187a956e166b92a899b9ee0f83889c35cb5cfe32799b9fb9e032c4eb7beb. 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/DEA340400604.
Ich Hab' Das Fräulein Helen Baden Seh'n - 2008 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb09fcb9464cd7145618733ffbd87a20a99c660c5df3a29294f77e471e3c1b5. 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/DEA340800561.
Wenn Die Elisabeth Nicht So Schöne Beine Hätt' - 2004 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55af42b356830f497596b7519ac2c6a9963843a9c7b9eccd20640ef630b2a200. 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/DEA340400608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1afa3fc93a63965a1c4380100808a832c4a8eb8c7a396d4b4b7ff86587f12a. 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/DEA340400634.
Heut' Ist Der Schönste Tag In Meinem Leben - 2004 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72c70aafaf3cf6d0a217e37f7b94531150251bcb8a9909adda64ef2d8d49498f. 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/DEA340400636.
Jawohl, Meine Herr'n - 2004 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27bda66bfc9a0185d0d10721ec451b4f523f9223a4ac21223bd7941bb90b0ffa. 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/DEA340400645.
Nur Nicht Aus Liebe Weinen - 2004 Digital Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d344539cf8ceca3fd81a85e3b84d41a31ef8f9a0b0e53c5ac4593824f9b25b. 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/DEA340400660.
Berlin Swings, Vol. 33 (Die goldene Ära deutscher Tanzorchester)
Berlin Swings, Vol. 28 (Die goldene Ära deutscher Tanzorchester)
Schwule Lieder - Perlen Der Kleinkunst 1 (Disc 2)
Karneval wie Anno dazumal: Robert Koppel, Kölsche Mädcher - Kölsche Junge (Music from the Golden Days of Carnival) [Recorded 1926-1932]
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 13 (Remastered 2018)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02846ffc2002853ee54b80251028258a062befb7753609e1fd716feaa0c7a6f7. 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/DEL111801145.
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 19
Die Roaring Twenties - Die Goldenen Zwanziger, Vol. 8: Mein Papagei frißt keine harten Eier
Karneval Anno Dazumal: Jeck om Vulkan (Remastered 2017)
Der Schlager Lernt Das Laufen 1920-1927 - Folge 2