Zarah Leander (; 15 March 1907 – 23 June 1981) was a Swedish singer and actress whose greatest success was in Nazi Germany between 1936 and 1943, when she was contracted to work for the state-owned Un
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28260e23b5bbe40ec610ff30631e8846dd8ea25b6c77fe28346f2a92986af68. 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/cb28c3c4-b77c-4b3b-bd1c-904fc9a5ff8e.json and https://artists.proofprofile.net/proofs/artist/cb28c3c4-b77c-4b3b-bd1c-904fc9a5ff8e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Icons of German Cinema: Zarah Leander in Stockholm, Vol. 1 (1930-1953)
Leander, Zarah: Centenary Edition - The Complete Legendary German Recordings (1936-1952)
Icons of German Cinema: Zarah Leander in Stockholm, Vol. 2 (1930-1952)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa904f366b73dd6a2c0815b73a382416117ac97e4d2d9cc840352f1185dbcb806. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE2IL9100418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816feff29fa49e0c1a5a18959cf1911ba93923791db2241cea98243369eb87f8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SE2IL9100421.
Essential Classics, Vol. 766: Zarah Leander
Zarah Leander sjunger Jules Sylvain, vol. 2
Zarah Leander sjunger Jules Sylvain, vol. 1
Ich weiß, es wird einmal ein Wunder gescheh'n
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17227b15ee70827fd5f70e07e50569caaa7fe2bc8bb30b5143c8e358464f9ed6. 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/DEZ921900780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ae02547fde856a4d77cc4f229c87eb4e339a7e02a4b35dcae4df2955cee4bc. 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/DEZ921900782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd57d582f7fb79700290a50041c43d7207c9c0787aa084c28fdbc6b041c94c783. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/DEZ921900781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c5e658f6e2743b0598f4c870ea8ae228a6f0433cf13c738508fc38b8aa2db1. 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/DEZ921900779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d4398eb86659014522e45234f71934e521c789f9f9a6a56fda71903e6dff2b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEZ921900783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af61ada25b3a558acf657a1f3781176addd57ce765949aba61340a9f6ba7e39. 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/DEZ921900785.
Eine Frau wird erst schön durch die Liebe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b2cc6212fb6799f8cdb96c22382d2835b01468d7c47886982f762e04cc416b. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:53:13Z), 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/DEZ921900784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38904200eb4c3e69525313db0a4f4355112277170a6f9065f2eb6d1f864abb1. 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/ATP130146304.
Vill ni se en stjärna (Wenn Der Weisse Flieder Wieder Blüht)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ea33690fb5fd73f838a8a57b86c3b80cf7420ceb090ec29ef75dedf427157c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA5417010.
Det skönaste som livet gav (The Best Things in Life Are Free)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300fd7a0c75a04ad12a0d7f5e4b9849dc281e4f37f88dc9e9f672e6b5cce221. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA5717130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9f42886783834585b04b41b2713dfb719c3b4b1e859da0c6a9523893dd653f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3717030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee9cb499896581f4e5b9bc92af6454a50d1ed8b6c93859d140480eda8713507. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA5717040.
Stockholm blir Stockholm (Starlight and Tulips)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e174aa216e6280feb0bde0382c162d1b5b39ae8a2b4bbe92788d5a043cea9d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3017050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefd6044bded32a04faf036fced20ef759ee1fa158619019044a71302f328bedb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA5717060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121da39067f9e56d18b34549318dcff6bf53e20a87ca56e588b5cb5a650b4d81. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3617070.
Det Sker Blott En Gång (Das Gibt's Nur Einmal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13c854325df169a58300bfed082e63d18c60a4d1b2239ad0ef3e734c2d3ddf7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3217080.
Viljasången (Vilja-Lied) [ur Glada Änkan]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7706661a27e16e093a04084eaedd6d4b901f1dbb63bbdf18c94a41aecbca9b82. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3117090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791d5c2641736e9b8bce13758edc112ff1648351e8036f29c512f3afa354a48e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3717100.
Från topp till tå (Ich Bin Von Kopf Bis Fuss Auf Liebe Eingestellt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef1cdf034ce93ad19f4780a16257c1ee1fd6af316d4ee4f525f957c4d8a69de. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3017110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd575c264148e47465b9edc4bb2d28ac59f53c0e3789aa3804edaff76f64b8170. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3617120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4039b8490c5f344799bc26c822aeb9aaa31dcfb9e13e560e7b33b834938964a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA5417020.
Jag har hört i vindens sus en gång (Der Wind Hat Mir Ein Lied Erzählt)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cebd675baad2caa3ded07f2a904428c4831fda75d63ee7ca81840b400f2a00. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA3817140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6b0850bd3a6e44a26450eddd92f09a6e2bd840015e852fdbc9ffaaac4d1bf56. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD5400217.
Fäll inga kärlekstårar (Nur Nicht Aus Liebe Weinen) - 2001 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1565b847a61afed890ba0eb6e35015db38443a9dfeab0b4fdf9b7b12483e21. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD3900223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f4df59b3dc7e02e3be69e3ab628a8b17f39cb523ad923039bf367e9a536842. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA6117170.
Vad skönt att man inte är ung (I'm Glad I'm Not Young Anymore)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff83f4d83468c0848b01902fa8a944887b5a50dd332130f351a425fed108f52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA6117180.
Stackars Jean (La Goualante Du Pauvre Jean) - 2001 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501dd190bf9efc2b673a1353d0696cc0e15ec311fc309b7e61bb37138f59e017. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD5500214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347cb8907a19ae103c9b2c68e26c1bd2bf80c0c32000f3ba42587fa4e9c7f11a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD5300215.
Bon Soir, Bon Soir - 2001 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3c002a99438d9116670cb80ef9dd9838d46b88519e0e97ade75b39e5e8e419. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD5400216.
När Rosorna Står I Blom (Wenn Die Wilde Rosen Blüh'n) - 2001 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb204e31c531384733cb132b4d3f8dafaf585ec5fcc66b1ba1e027c5bc65d7d25. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD5300218.
Jag Kan Inte Leva På Minnen - 2001 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f41947b7eab588214b991652e2dfcd5e9799b3ad2f3379e60f70bd3cdbcf36. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD5700219.
Blå vision (Blue Mirage) - 2001 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa869bc2b8b0a6efa544e6b640b922b13984b728ffcbdba89aa6eb468f5a46491. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMD5500221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c90d62ef7ccd76ff39db86ac413cab0eaf432b7acf7cf3e51b41a8c1ea2aea6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAMA7517190.
Vill ni se en stjärna? - 20 originalinspelningar från åren 1931-1954
Davon geht die Welt nicht unter - From "Inglourious Basterds"
Music from Quentin Taratino Movies (Original Recordings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38757effaa7e860358c9f89933bfd970d91cb40c6c88ee9d28570225cfb64a3e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEBL60553745.
Ich Weiss Es Wird Einmal Ein Wunder Gescheh´N
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997c2e54f2119e4d82e70b98a2c5fdd81fe897bd0754687b3155efa896f7f8dc. 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/GBURZ1407207.