Erich Kunz (20 May 1909 – 8 September 1995) was an Austrian operatic baritone, particularly associated with the roles of Papageno and Beckmesser. Early life Born in Vienna, Kunz was educated at the V
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 0xf6a8667d7479ddc9971af429961203de1b68910ce461310d1dcc5ae4b883022a. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e3e804e-8c81-4153-b65d-ec6f1889365c.json and https://artists.proofprofile.net/proofs/artist/3e3e804e-8c81-4153-b65d-ec6f1889365c.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 0xb83be1841e113b368e4d1d98b05dfb9b2ecb71e6c5aa2ae6a8b02439042ae21e. 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/GBF076040519.
Mozart: Don Giovanni, K. 527 (Sung in German) [Recorded 1955] [Live]
Mozart: Le nozze di Figaro, K. 492 (Sung in German) [Remastered 2022] [Live]
Mozart: Le nozze di Figaro (Live in the Royal Festival Hall, 1954)
Le nozze di Figaro, K. 492, Act I: Overture - Live in the Royal Festival Hall, 1954
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ac40944bfce06b46ef646895244d00f868f2268cce701749980c40f335ae32. 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/GBG9M1501901.
Le nozze di Figaro, K. 492, Act IV Scene 13: Tutto è tranquillo e placido - Scene 14 Pace, pace, mio dolce tesoro! (Figaro, Susanna, Il Conte) - Live in the Royal Festival Hall, 1954
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb87ea1e25a6b146aecb599f4b9d5cc881562a20b7d603bacf1ca7ec22fc07a. 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/GBG9M1501859.
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
MASTERPIECES presents Wolfgang Amadeus Mozart: Die Zauberflöte
Così fan tutte ossia / La scuola degli amanti
Mozart: Così fan tutte, K. 588 (Live 1954)
Mozart: Don Giovanni, K. 527 (Remastered 2022) [Live]
Die Meistersinger von Nürnberg the Broadcast Recording 05.08.1951 new HD Mastering in 2022
Wagner: Die Meistersinger von Nürnberg, WWV 96 [Live]
Wolfgang Amadeus Mozart: Le nozze di Figaro (1950)
Dokumente einer Sängerkarriere - Erich Kunz
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3d875b84a5b08e4e912131f506ce2a3742bc014532d7b9d6d61b9a52778dae. 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/ATP130355011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b84aced1c39c03dab694c6860d78b5106627825b7609186a539a4c99ff921f. 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/ATP138901202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c47f02af58152ed4553a8f5e6e1edb4cfdfc879ebb997d66bfb306f78e6212d. 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/ATP138901203.
Lehár: Das Land des Lächelns & Other Operetta Excerpts
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa37a2527b0c8ace34232be591c2e7da202b4d12d4e82db62796cd87db7ebc8d4. 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/GBJ2F1010734.
The Merry Widow: Act I, "O Vaterland du mächst bei Tag"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8e453147925fb5b42a9fbb75af9585bad09c0a3f171988ab67ccbaa9111057. 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/GBJ2F1010742.
The Merry Widow: Act I, "Wie die Blumen in Lenze erblüh'n"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8709c0058c48fc9cbe46fdfbac77360841ad31051c98b67b008be364dbad6740. 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/GBJ2F1010745.
The Merry Widow: Act II, "Wie eine Rosenknospe"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba21ceb32dd8025ca8ebf5bf674e25388d46e74807533e540452354a8b3884e. 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/GBJ2F1010754.
The Merry Widow: Act II, "Nun wissen Sie, meine Herrschaften"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94282476b999c934b052fc653a6080646d8f3db5175fe826d7a8509fd57b7cb. 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/GBJ2F1010758.
The Merry Widow: Act III, "Njegus, was ist das mit der Musik?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c94212f1997edab14fac1a805c4190f301ade170a622a988c64b38a9e17a887. 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/GBJ2F1010760.
The Merry Widow: Act III, "Ja, wir sind es, die Grisetten"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99636f14fb02d9d04e8dee9f08f3412d67a4c3b2cfbd4ba13b3210b3af0678fa. 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/GBJ2F1010761.
The Merry Widow: Act III, "Bei jedem Walzerschritt"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d5bd2f016304c1602878b6d00da484dd284c3bb5d871ef4610a45d4e884a8f. 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/GBJ2F1010763.
The Merry Widow: Act I, "Verehrteste Damen un Herren"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b78f912a725f0bf4f0b9c8cf0c5cbcdd0072ebeaac3a97db5bd9151b02855c. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBJ2F1010735.
The Merry Widow: Act I, "Und jetzt, meine Herrschaften"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42559e0d3dfbc086a4da456ed42a91f6e88c34c5cb5e7396ebd582e3e0525258. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBJ2F1010736.
The Merry Widow: Act I, "So kommen Sie!...Ich bin eine anständ'ge Frau"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x634c49908e7a356322572f00f47e3771ce28350a0ab37247d1320c364dc738e0. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBJ2F1010737.
The Merry Widow: Act I, "Bitte meine Herr'n"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561b00c2fd0658816986566d5bfba9bf31a9a4711cd7c4704e504f2a73186534. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBJ2F1010739.
The Merry Widow: Act I, "Njegus, waren Sie beim Count Danilo?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688eba3211eb19f94d07c1f00054155490013e05cf6dd17b62b880b48849c642. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBJ2F1010741.
The Merry Widow: Act I, "Ach Njegus, Geliebter, wo ist Vaterland?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4638a1ce411ebb26776bb75f5764b0807c9c815f1dce6e9147e4e62fe3c66b2d. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBJ2F1010743.
The Merry Widow: Act I, "Damenwahl! Hört man rufen rings im Saal!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2230b6907d2b9d6a12e3298fb6fa932d0018c177ec55719ccd26cd8e2442eecc. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/GBJ2F1010744.
The Merry Widow: Act II, "Ich bitte, hier jetzt zu verweilen"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9500bba9d510251d7a94528086aca0bf99a8821add4803e40b5714be021310df. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBJ2F1010746.
The Merry Widow: Act II, "Nun lasst uns aber wie daheim...Viljalied"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4c1d10d84e7f605c9421e6877a796759658250f88e4b1d567390d056929815. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBJ2F1010747.
The Merry Widow: Act II, "Heia, Mädel, aufgeschaut"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5bc6e589c1063208f3a328f64127f5132ab5cdfb8621c2b90d8fa0737ed1f1d. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBJ2F1010749.
The Merry Widow: Act II, "Wie die Weiber?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf2a0634ee2581acf8cc7f56fb409e53c2b0c7c9e6249e382472a9cb81803da8. 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/GBJ2F1010751.
The Merry Widow: Act II, "Mein Freund, Vernunft!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3689fb424f0343bd88f474f827b42b8fe4d241670295c1feb83e97f93432eb3. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBJ2F1010753.
The Merry Widow: Act II, "Sieh dort den kleinen Pavillon"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6653d3a31f1d06e3eecc07d14b1b7bc0f85490c733b21b72e84c15947925a7. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/GBJ2F1010755.
The Merry Widow: Act II, "Die Baronin und Herr Rosillon sind im Pavillon"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54be6e18821e178a707946c057d00864b5d0260b6245611c049490557bbeb9f9. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/GBJ2F1010756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc08a95dfa900afb5b0b058440ee3147694882c70470672a6807e0ded1f191cc. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBJ2F1010757.
The Merry Widow: Act II, "Es waren zwei Königskinder"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x669d06bd653af308a84091878ab499147cedd64cb89ed5174e688caea5dc54c9. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBJ2F1010759.
The Merry Widow: Act III, "Gospodina, pravalni!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b5aa83440c5ced19d7900c7f88eef0f46fc94f5893002f821dfedd25e8bf9e1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBJ2F1010762.
The Merry Widow: Act III, Finale "Ja, das Studium der Weiber ist schwer"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb425759fe1b0e569ce8cae668258d0a31849c055aa93be661190717554d4d632. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBJ2F1010765.
Mozart: Le nozze di Figaro, K. 492 (Mono Version)
Die Fledermaus, Act III: No. 16, Finale. O Fledermaus, o Fledermaus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09543d5c103ffa5d6f16aefe9de129c1bcd083d92d883a14858f1768d7f2d86a. 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/GBF076040534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79dd0d3a21ef6c892451608f9ba14cb5a88cf3df73c4c90b5f0b4c9de7effd3. 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/US2TL0945001.
Die Fledermaus, Act III: No. 14, Couplet. Spiel' ich die Unschuld vom Lande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c20a90476b331045479298bc71e264fb26b5a4fec41098d7848170e71840d14. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/GBBBA6075090.
Die Fledermaus, Act III: No. 15, Trio. Ich stehe voll Zagen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003413b9774e4b6074f19a9c3936cc083c4665548a1581b19a78b340e5dc9b97. 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/GBBBA6075100.
Die Zauberflöte, K. 620: Act I: Arie: Der Vogelfanger bin ich ja (Papageno)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ee81aaa65ba1f62accb6f069d633838c5cf71195227d7dd9927285eaf8c67a. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US2TL0945005.
Die Zauberflöte, K. 620: Act II: Terzett: Seid uns zum zweiten Mal willkommen (Drei Knaben)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319c4a529b6b2fc3158b358a6ba7b1d84933620c037f17ff15e35a871f097595. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/US2TL0945033.
Die Zauberflöte, K. 620: Act II: Finale: Bald prangt, den Morgen zu verkunden - Der, welcher wandert - Papagena! Papagena! Papagena! - Nur stille! Stille! Stille Stille!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48fbe584a5d3ea8a517534e17e58adc79ffa802fae92a0e69ee887fffacf73b. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/US2TL0945043.