Lorenzo Alvary, also Lorenz Alvari (20 February 1909 – 13 December 1996) was a Hungarian-American operatic bass. Life and career Born in Debrecen, Alvary first studied law in Geneva and Budapest,
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 0x0456b6f70ea1fd5cc4284181f1f2737b84670703f13f98014b7da31e2f873681. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93f55ccb-dc94-4fad-881b-699ce20fe62a.json and https://artists.proofprofile.net/proofs/artist/93f55ccb-dc94-4fad-881b-699ce20fe62a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Flotow: Martha (Sung in English) [Recorded 1961]
Mozart: Le nozze di Figaro, K. 492 (Live)
Mussorgsky: Boris Godunov (Sung in English) [Live Recording 1956]
Richard Strauss: Der Rosenkavalier, Op. 59, TrV 227 (Live Recordings 1946)
Richard Strauss: Der Rosenkavalier, Op. 59, TrV 227 [Recorded Live 1946]
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 1: Licht über'm See - Live
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 0x40a012fc82ceac7d6da6dd6d18244c7a8ec10148a175efefa5f27bb03313945a. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DEF057730301.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 2: Was ist nun deine Rede, du Prinzessin...O Tag des - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc63376ecd902436a7474c224e955d74bb8599a7691e8bf229435eafd93d455. 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/DEF057730316.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 3: Mir anvertraut - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8486bfa6674da436834bd29e20d1d4e6f55ee875f4d74435affc8e908a1ecce1. 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/DEF057730329.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 1: Ist mein Liebster dahin? - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcc9b6eae706822819d2e78155f6bd4c1e4fcdca2760268435c48e5ec45fd75. 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/DEF057730303.
Die Frau ohne Schatten, Op. 65 / Act 2: Orchesterzwischenspiel - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83aa7b2a9d1e1fe98d7c7bdbee374608e48ae52d928b1acc24404ccc26b3c40. 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/DEF057730317.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 2: Falke, Falke, du Wiedergefundener - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ad71b7bded9b92034478c2008efb247a630b9ef679846f546513b2d953a9b7. 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/DEF057730318.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 3: Fort von hier! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x094d0fbebb7303a03b5819ceee1d316a2e1433b714051898b028f95920e1543a. 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/DEF057730331.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 3: Sterben! Sterben - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd866162d6af800d04737a163ab3ddc16773e6abb2647d87ece287dafc98c987a. 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/DEF057730333.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 1: Dieb! Da nimm!...Reiss ihn nach hinten...Zu hilfe" - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72895b7e849667ec963463cb904dcca045e2371f15d90d4fcd6f0d09ca9b6d13. 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/DEF057730307.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 1: Sie aus dem Hause - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23deb8acd21a594949e4ebf0b29d0c5ec04b09ad61cefe744d673e308e936d62. 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/DEF057730308.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 3: Weh mir! Erfüllt der Fluch! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b49647d90b627961e9d4257742810d785da69a0957e1daf43cbb7a9dc314dfe. 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/DEF057730335.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 1: Dritthalb Jahr bin ich dein Weib - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f38011827f56d35565a8eadbc4905408a74b24c6dee1b6387e925b96f808068. 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/DEF057730309.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 1: Was wollt' ich hier? - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbadc3704d8632d7ec2ad3c2added148f7e23c222e800fa7d66f2264b37c76de. 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/DEF057730310.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 2: Wehe, mein Mann! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e210e0e73e3b36c049164cdd91f7d14099f0476e890e587e3cbb84e204012e. 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/DEF057730324.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 2: Das Weib ist irre - Barak, ich hab' es nicht getan! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6c1b1dbd43942e8865d416d7086a9b6fd1fb34dca11ef5470a4ef1f2b13602. 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/DEF057730327.
Die Frau ohne Schatten, Op. 65, TrV 234 / Act 2: Es dunkelt, daß ich nicht sehe zur Arbeit - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x263bd41b10778f7262d6f12f14af209f4be7684084a8612baed73d002de0ea26. 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/DEF057730325.
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
Mozart: Le nozze di Figaro (Live Recordings 1949)
Mozart: Don Giovanni, K. 527 (Recorded 1954)
Fidelio Excerpts conducted by Bruno Walter sung in English
Verdi: Un ballo in maschera (Live Recording 1947)
Mozart: Le Nozze di Figaro (Metropolitan Opera)
Mozart: Così fan tutte, K. 588 (Sung in English) [Live]
Wagner: Die Meistersinger von Nürnberg (The Mastersingers of Nuremberg), WWV 96 [Recorded 1953]
Beethoven, L. Van: Missa Solemnis (Philharmonic Symphony, Walter) (1948)
Alessandro Scarlatti : The Spanish Lady & the Roman Cavalier [Scipione nelle Spagne] (1961)