Rosa Mina Schärer (3 March 1924 – 24 March 2018), known by her stage name Lys Assia, was a Swiss singer who won the first Eurovision Song Contest in . Assia was born in Rupperswil, Aargau, and began h
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 0xef352f727f60899af01c4d673e5f3d3fab3c1f27d6d666ad97e270c76185e4ef. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/14f70a68-7c0f-431e-a7a0-ebed0c4ecad0.json and https://artists.proofprofile.net/proofs/artist/14f70a68-7c0f-431e-a7a0-ebed0c4ecad0.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 0xdc3600b09f538225b888d4c570db9c4b5b09f694983905473bf96a8957253fe3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZZ52172281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56096eb117c3e87ac7e00fb5d34b7f5de4efbb7ada391113806cb812280df83. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DEZZ52172283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5372014df3df2e8a6b04f377423ecc96dc569c702c3feb523ef91425fdf31bd. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/DEZZ52172287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fbda2193c56b4c98737b2d6b5ebb9ef931f8fb59c027ee4ecc55de9bd57d78c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEZZ52172302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93039cd76c89082b7868465374a279745dadb7e0f329ded99a7fa1fe96aac686. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/DEZZ52172305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347a189a5ee0555648cba7501e090df47e7a4bae681693cd93249f5b135822e9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEZZ52172306.
Ihre Lieder (feat. Béla Sanders und sein Orchester) [Mono Version]
Vintage French Song No. 138 - EP: Oh! Mon Papa
O mein papa / Schweizer madel (feat. Studio-Orchester Beromünster, Paul Burkahrd) [Mono Version]
Grand prix de l'Eurovision, 1958 (feat. Hugo Strasser & Rudi Bohn) [Mono Version]
Internationale schlager-parade (Mono Version)
Giorgio (feat. Jacques Brienne et son orchestre) [Mono Version]
San Remo 1961 (feat. Dino Olivieri E La Sua Orchestra) [Mono version]
Madeleine / Fais-toi belle (feat. Herbert Beckh et son orchestre) [Mono version]
Le soukou soukou (feat. Heinz Alish et son orchestre) [Mono Version]
Le soukou soukou / Tes yeux lilas (feat. Heinz Alish et son orchestre) [Mono Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ebb6d8eb729ed29e6c26bfd27ab6fe015cc8a87a5e9286324f18cc4d807143. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEF550500964.
Lys Assia - Hits und Raritäten der ersten Gewinnerin des Grand Prix Deurovision Vol. 3
Lys Assia - Hits und Raritäten der ersten Gewinnerin des Grand Prix Deurovision Vol. 1
Lys Assia - Hits und Raritäten der ersten Gewinnerin des Grand Prix Deurovision Vol. 2
Lys Assia - Hits und Raritäten der ersten Gewinnerin des Grand Prix Deurovision Vol. 4
Vintage Vocal Jazz / Swing No. 195 - EP: Wenndu Fortgehst Von Mir
Was kann schöner sein – Ihre größten Erfolge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14909de0d55125d20b019ddf1fb837e6fa166310992b805f4ea299c23c014102. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEG411193904.
Traumkonzert (Concerto d'Autuno 1955 - 1957)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17921f753c3c7c6e8a14fc13df9f84f5493f5108845d14f6b9cdd898e4c04922. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/NLG620486838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c1b75ddbad3017506eb8e533942154c585a89576fa929ecd947be7403edae9. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/NLG620486839.
MASTERPIECES presents Lys Assia: Hits & Raritäten
Oh, mein Papa (Music for Dancing, for Listening - For Your Pleasure*)
Timeless Vintage Elegance - The Voice of Eurovision's First Star
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fee03e566d3eb758b1c17197b01311eed548b24046e5d3a718be6cd21975cb9. 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/GBURZ1407253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e29421db20d377d16d0a9c9b12ddfe58b953a4506cc86a4ed20912731f172f6. 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/CH0040700357.
Die schönsten Kino Melodien aus Deutschland, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b71cbaa9c05d0a46afeccb3c073c4250eb6ca6dc411f06a03b153faec30235c. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DELM41409198.
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
Die Schönsten Schlager Der 50'er Jahre, Vol. 14
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd9313d8e4622858bb5cd2167bda9080b8e4c81787c6dbe269124ce127e6ff7. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/NLG620486568.
Schlagerperlen, Vol. 4 (Die schönsten deutschen Schlager)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b7548fd722e541c7132ec39a1c0bdf6f61d33562f3dea285c63afdde137a80. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEHB51207226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28fc5ecfb0733698cec88c25ce8bf5fce260d6a5809884d20694ff7a64c93bb. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/NLG620486574.