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 0xdc444e23b01a4ba44944ef4def99406eff86f161d8dbb89b1d1ef5e2247d5d23. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5513a170-b71f-46cd-b7d0-0c129a5996e4.json and https://artists.proofprofile.net/proofs/artist/5513a170-b71f-46cd-b7d0-0c129a5996e4.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.
Glamourwelt Berlin Vol. 5 (1926-1942) From the "Weimarer Republik" to the Second World War - The songs of old Berlin
Treffpunkt Filmpalast: Traumfabrik der UFA Jahre
Die Geschichte des deutschen Schlagers 1
The Roaring Twenties (Die wilden Zwanziger), Vol. 6: Wenn du meine Tante siehst, ich lass' sie grüssen [Recorded 1926-1932]
The Roaring Twenties (Die wilden Zwanziger), Vol. 2: Am schönsten sind die Mädchen, wenn sie baden geh'n (Recorded 1926-1937)
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 23
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.
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.
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
Berlin Swings, Vol. 16 (Die goldene Ära deutscher Tanzorchester)
Schellack Schätze - Treasures on 78 rpm from Berlin, Europe and the world, Vol. 6 (2nd Revised Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d49a713b1f8dfcb756a460ad7d25759cc686a48e29fcc3ac43f06f5179b6e4. 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/DER751606135.
Du sollst mein Glücksstern sein (You Are My Lucky Star)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271d59649e1d38bfc73c31ef437de4c71a69a0c893cc943f33f71d6aa1b5de71. 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/DER751606148.
Die Goldene Schlager Box der 30er Jahre, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffffd69cc09ab6a24a891043830aab62bf2c18b29678e1553a68ea25c9e3775. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEXO42238187.
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. 8 (Die goldene Ära deutscher Tanzorchester)
Berlin Swings, Vol. 29 (Die goldene Ära deutscher Tanzorchester)
Ich lieb dich, ich lieb dich, ich lieb dich
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8916a47743fb9f945747f0257c22eb2436779f432b964b1a58fa4fe4194c18. 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/DEHB51251227.
The Roaring Twenties - Die Goldenen Zwanziger, Vol. 7: Ein nettes kleines Fräulein
Berlin Swings, Vol. 15 (Die goldene Ära deutscher Tanzorchester)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0411fc9982abbdd8d61bdbe9471da2c7cfec3a3d8c85aea261be7241a1ce32f. 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/DEHB51250556.
Berlin Swings, Vol. 19 (Die goldene Ära deutscher Tanzorchester)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d62a9e812b2fc3ac07052d50aee8d884257021feb905420f2cc4233f2fefb83. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEHB51250671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ba6b2dbf7f547b62fd9144f43442630d266d1996af3edfad8149781899c123. 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/DEHB51250677.
The Golden Era of the German Dance Orchestra: Dajos Béla und sein Orchester vom Hotel Adlon, Berlin (1927-1933)
Berlin Swings, Vol. 23 (Die goldene Ära deutscher Tanzorchester)
Berlin Swings, Vol. 7 (Die goldene Ära deutscher Tanzorchester)
Berlin Swings, Vol. 26 (Die goldene Ära deutscher Tanzorchester)
The Golden Era of the German Dance Orchestra: Berliner Nachte, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9912a982624ec0545a93c6ec9e20b48cc3f35b11d45e41b7957301b71001b1. 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/DEL110700101.
Die Goldene Ära deutscher Tanzorchester: Das Eric Harden Tanzorchester (Recordings 1931-1937)
Schlagerperlen, Vol. 7 (Die schönsten deutschen Schlager)
Berlin Swings, Vol. 33 (Die goldene Ära deutscher Tanzorchester)
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa355d0f44025af2245d7de8a37827a9cad6ca2f5014c664c9c362aa44be62431. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEBL60474075.
Schellack Schätz: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 31
Berlin Swings, Vol. 28 (Die goldene Ära deutscher Tanzorchester)
The Golden Era of the German Dance Orchestra: Musik aus Berliner Cafehausern und Tnzpalasten in Originalaunahmen (1930-1943)
“Musik hat mich verliebt gemacht” und andere Gerhard Winkler-Hits (Vol. 2) im Originalsound 1935 bis 1941
The Golden Era of the German Dance Orchestra: Juan Llossas und sein internationales deutsch-spanisches Tango-Orchester (1929-1940)
Schwule Lieder - Perlen Der Kleinkunst 1 (Disc 2)
Schellack Schätze: Treasures on 78 RPM from Berlin, Europe and the World, Vol. 16
Berlin Swings, Vol. 11 (Die goldene Ära deutscher Tanzorchester)