Lotte Rysanek (18 March 1924 – 14 December 2016Sopranistin Lotte Rysanek (92) gestorben) was an Austrian operatic soprano. She was the sister of soprano Leonie Rysanek.Disparition de la soprano Lotte
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 0xda6cba6e8a8d4ef5f4664e82972898e2576110213897646a745ae4d9b8b9a75e. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0eb0847-e078-435d-8f36-bf7eb453553b.json and https://artists.proofprofile.net/proofs/artist/b0eb0847-e078-435d-8f36-bf7eb453553b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Lustige Witwe: Es waren 2 Königskinder/Ich geh jetzt ins Maxims
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 0x25a9cb3619511fbc8ecc6224009c7663356d28cc6d1f274ef752478e565dbcd1. 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/CAM460870147.
Im weissen Rössl, Akt III: "Mein Liebeslied muss ein Walzer sein"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x816d3c9e3563dd512fec34341d0b2cf8ed80d960c6a125615b49ac1a676fc3ee. 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/CAM460870123.
Die lustige Witwe: Wie die Blumen im Lenze erblüh'n/Ballsirenenwalzer
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f1b5410ca55f570f58126e295ccfa73c4ac04413ef725bcdcfa5b192bc8d0ab. 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/CAM460870145.
Gräfin Mariza: Ich warte auf das große Wunder/Machen wir's den Schwalben nach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06804c9f7229486dde0d4322e4cad6c3391743d789ff4dbfb71e964aa7f375ea. 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/CAM460870144.
Im weissen Rössl, Akt I: "Es muss was Wunderbares sein"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110ca1fcca82d3ab230d557ab1972f33736ba07e21429e60c8fb403bbe84d6d9. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/CAM460870122.
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 0x0d3eac293be8d186537c7943ebecb37a294eb0b9d0cd02de80ca88583c03754c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/CAM460870146.
Der Graf von Luxemburg, Act I: "Bist Du's, lachendes Glück"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64191ae219c53011499899c8ec4e6f818deddebe30c4e83b3b8b04dc48cb741b. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CAM460870151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd538985c40b9db088ca4a20c58b9702f6a101d14fdd25fd89bf2cda493486b21. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CAM460870154.