1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x20bfc2acde116fe31085a6acbcd4985d616f66b6a2d85a8da843ba0ca70b969e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5ddb2add-9a10-462b-a606-1a2ca1c6ec0e.json and https://artists.proofprofile.net/proofs/artist/5ddb2add-9a10-462b-a606-1a2ca1c6ec0e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Wagner: Die Meistersinger von Nürnberg (Live)
Die Meistersinger von Nürnberg, Act I: Fanget an! (Live)
Die Meistersinger von Nürnberg, Act I: Seid ihr nun fertig? (Live)
Die Meistersinger von Nurnberg, Act III: Prelude (Live)
Die Meistersinger von Nürnberg, Act I: Prelude (Live)
Die Meistersinger von Nürnberg, Act I: Halt! Meister! Nicht so geeilt! (Live)
Die Meistersinger von Nurnberg, Act III: Gleich, Meister! Hier! (Live)
Die Meistersinger von Nürnberg, Act I: Da zu dir der Heiland kam (Live)
Die Meistersinger von Nürnberg, Act I: Ihr Mahnt Mich da Gar Recht (Live)
Die Meistersinger von Nurnberg, Act III: Am Jordan Sankt Johannes stand (Live)
Die Meistersinger von Nürnberg, Act I: Verweilt! Ein Wort! (Live)
Die Meistersinger von Nurnberg, Act III: Wahn! Wahn! Uberall Wahn! (Live)
Die Meistersinger von Nürnberg, Act I: Da bin ich. Wer ruft? (Live)
Die Meistersinger von Nurnberg, Act III: Gruss' Gott, mein Junker! (Live)
Die Meistersinger von Nürnberg, Act I: David! Was stehst? (Live)
Die Meistersinger von Nürnberg, Act II: Johannistag! Johannistag! (Live)
Die Meistersinger von Nurnberg, Act III: Mein Freund! In holder Jugendzeit (Live)
Die Meistersinger von Nürnberg, Act I: Mein Herr! Der Singer Meister-Schlag (Live)
Die Meistersinger von Nürnberg, Act II: Lass sehn, ob Meister Sachs zu Haus? (Live)
Die Meistersinger von Nurnberg, Act III: Morgenlich leuchtend in rosigem Schein (Live)
Die Meistersinger von Nürnberg, Act I: Der Meister Ton' und Weisen (Live)
Die Meistersinger von Nürnberg, Act I: Aller End' ist doch David (Live)
Die Meistersinger von Nürnberg, Act II: Zeig her - 's ist gut (Live)
Die Meistersinger von Nurnberg, Act III: Abendlich gluhend in himmlischer Pracht (Live)
Die Meistersinger von Nürnberg, Act I: Seid meiner Treue wohl versehen (Live)
Die Meistersinger von Nürnberg, Act II: Was duftet doch der Flieder (Live)
Die Meistersinger von Nurnberg, Act III: Interlude (Live)
Die Meistersinger von Nürnberg, Act I: Gott gruss' euch, Meister! (Live)
Die Meistersinger von Nürnberg, Act II: Gut'n Abend, Meister! (Live)
Die Meistersinger von Nurnberg, Act III: Ein Werbelied! Von Sachs! (Live)
Die Meistersinger von Nürnberg, Act I: Das schone fest, Johannistag (Live)
Die Meistersinger von Nürnberg, Act II: Das dacht' ich wohl! (Live)
Die Meistersinger von Nurnberg, Act III: Das Gedicht? Hier liess ich's (Live)
Die Meistersinger von Nürnberg, Act I: Eva, mein einzig kind, zur eh' (Live)
Die Meistersinger von Nürnberg, Act II: Da ist er! (Live)
Die Meistersinger von Nurnberg, Act III: Sieh, Evchen! (Live)
Die Meistersinger von Nürnberg, Act I: Dacht' ich mir's doch! (Live)
Die Meistersinger von Nürnberg, Act II: Geliebter, spare den Zorn! (Live)
Die Meistersinger von Nürnberg, Act I: Am stillen Herd (Live)
Die Meistersinger von Nürnberg, Act II: Uble Dinge, die ich da merk' (Live)
Die Meistersinger von Nürnberg, Act I: Merkwurd'ger Fall (Live)
Die Meistersinger von Nürnberg, Act II: Tu's nicht! Doch horch! (Live)
Die Meistersinger von Nürnberg, Act II: Jerum! Jerum! (Live)
Die Meistersinger von Nürnberg, Act II: Das Fenster geht auf (Live)
Die Meistersinger von Nürnberg, Act II: Den Tag seh' ich erscheinen (Live)
Die Meistersinger von Nürnberg, Act II: Seid Ihr Nun Fertig? (Live)
Die Meistersinger von Nürnberg, Act II: Ach, Himmel! David! (Live)
Don Giovanni, K. 527, Act I: No. 2a, Ma qual mai s'offre, o Dei
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1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae74ebd44a9d95ae41c78d71b568ba96cf1d1ab59ee21a74261fa34cee20f4b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/41D95gDBio0QkgXWMEd0C5.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/41D95gDBio0QkgXWMEd0C5.
Don Giovanni, K. 527, Act I: No. 2b, Fuggi, crudele, fuggi!
{"copyright_id":"0x8ff5f6532d3cb430a88a41dfce1c53f3814f35224896093a5e1f933cffa5cc9d","isrc":"DEF058530422","name":"Don Giovanni, K. 527, Act I: No. 2b, Fuggi, crudele, fuggi!","registered_at":"2026-06-08T21:12:31Z","spotify_id":"4LifqBsRcJRqHCkC6qHQdb","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff5f6532d3cb430a88a41dfce1c53f3814f35224896093a5e1f933cffa5cc9d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4LifqBsRcJRqHCkC6qHQdb.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4LifqBsRcJRqHCkC6qHQdb.
Don Giovanni, K. 527, Act I: No. 9, Non ti fidar, o misera
{"copyright_id":"0xf3d3f8784cd28609307a0fb40c05ad4a0ad284e4fd4c154938955ddabd5c57cc","isrc":"DEF058530433","name":"Don Giovanni, K. 527, Act I: No. 9, Non ti fidar, o misera","registered_at":"2026-06-10T18:39:24Z","spotify_id":"607z4jVBeenxXQ7iUhk5UO","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d3f8784cd28609307a0fb40c05ad4a0ad284e4fd4c154938955ddabd5c57cc. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/607z4jVBeenxXQ7iUhk5UO.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/607z4jVBeenxXQ7iUhk5UO.
Don Giovanni, K. 527, Act I: Recit. Mi par ch'oggi il demonio si diverta
{"copyright_id":"0x7631c89e0d6dcc3005b595a7d7275782794947206d534f4c9a93242fc011d338","isrc":"DEF058530431","name":"Don Giovanni, K. 527, Act I: Recit. Mi par ch'oggi il demonio si diverta","registered_at":"2026-06-18T11:48:30Z","spotify_id":"15N5G1GlWob5dummXb58fQ","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7631c89e0d6dcc3005b595a7d7275782794947206d534f4c9a93242fc011d338. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/15N5G1GlWob5dummXb58fQ.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/15N5G1GlWob5dummXb58fQ.
Don Giovanni, K. 527, Act I: Dalla sua pace, K. 540a (Vienna Version)
{"copyright_id":"0x6a07758850f13fc7290f3fbaa4b397468beaec2938e21c9a89d76d5038ed331a","isrc":"DEF058530407","name":"Don Giovanni, K. 527, Act I: Dalla sua pace, K. 540a (Vienna Version)","registered_at":"2026-06-18T02:53:47Z","spotify_id":"16pyvKLTgVNO69qOMNvxDE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a07758850f13fc7290f3fbaa4b397468beaec2938e21c9a89d76d5038ed331a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/16pyvKLTgVNO69qOMNvxDE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/16pyvKLTgVNO69qOMNvxDE.
Don Giovanni, K. 527, Act I: No. 10a, Don Ottavio, son morta!
{"copyright_id":"0x1aae1e99d8f9cf51ad36605dd4aba2a8941769534194ab75f9264070fbbc1ddb","isrc":"DEF058530435","name":"Don Giovanni, K. 527, Act I: No. 10a, Don Ottavio, son morta!","registered_at":"2026-06-18T02:53:57Z","spotify_id":"64F7fToap7FF8VZF9QnJTE","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aae1e99d8f9cf51ad36605dd4aba2a8941769534194ab75f9264070fbbc1ddb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/64F7fToap7FF8VZF9QnJTE.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/64F7fToap7FF8VZF9QnJTE.
Don Giovanni, K. 527, Act I: No. 13, Finale: f-j. Riposate, vezzose ragazze... Trema, o scellerato
{"copyright_id":"0x84ce6c685b0aa968d5d59da18d01e52b341eebf8e85d7fdfef48f8d9a488ab61","isrc":"DEF058530444","name":"Don Giovanni, K. 527, Act I: No. 13, Finale: f-j. Riposate, vezzose ragazze... Trema, o scellerato","registered_at":"2026-06-18T02:54:39Z","spotify_id":"4pRy0VizYIK8dmZ6a8fS44","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ce6c685b0aa968d5d59da18d01e52b341eebf8e85d7fdfef48f8d9a488ab61. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4pRy0VizYIK8dmZ6a8fS44.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4pRy0VizYIK8dmZ6a8fS44.
Don Giovanni, K. 527, Act I: Recit. Come mai creder deggio
{"copyright_id":"0xccb6f59cf2f6c1cdecdf5d4f0997391840b2dde18fd6fa4398d93c8711566b31","isrc":"DEF058530436","name":"Don Giovanni, K. 527, Act I: Recit. Come mai creder deggio","registered_at":"2026-06-18T17:46:41Z","spotify_id":"4c8lJKk27FGvMvMcEbWkll","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb6f59cf2f6c1cdecdf5d4f0997391840b2dde18fd6fa4398d93c8711566b31. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4c8lJKk27FGvMvMcEbWkll.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/4c8lJKk27FGvMvMcEbWkll.
Don Giovanni, K. 527, Act I: No. 13, Finale: d-e. Bisogna aver coraggio – Protegga
{"copyright_id":"0xc9e40eb65d710c65ef974dd6e0e8afb9cc7d0081886275a4e9afc7241f6f8a15","isrc":"DEF058530443","name":"Don Giovanni, K. 527, Act I: No. 13, Finale: d-e. Bisogna aver coraggio – Protegga","registered_at":"2026-06-18T00:38:42Z","spotify_id":"57dmhVMZezsVnuBzHJJybo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e40eb65d710c65ef974dd6e0e8afb9cc7d0081886275a4e9afc7241f6f8a15. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/57dmhVMZezsVnuBzHJJybo.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/57dmhVMZezsVnuBzHJJybo.
Don Giovanni, K. 527, Act II: No. 19, Sola, sola in buio loco
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976945d0150d151708f4e67d100634bb5e7d7fe4b433aded2c3ba8528d16b580. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7t5I5u4IUcEUc9MV1ln9xs.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/7t5I5u4IUcEUc9MV1ln9xs.
L'elisir d'amore / Act 1: "Chiedi all'aura lusinghiera"
Orchestra del Maggio Musicale Fiorentino
Barbara Bonney - The Radiant Voice of Barbara Bonney
Wolfgang Amadeus Mozart: Schatten ung licht: Chapter 1: Wunder der Natur (1756-1765)
L'elisir d'amore / Act 1: "Quanto è bella"
L'elisir d'amore / Act 1: "Benedette queste carte!"
L'elisir d'amore / Act 1: "Come Paride vezzoso"
L'elisir d'amore / Act 1: "Una parola, Adina"
L'elisir d'amore / Act 1: "Caro elisir! Sei mio!"
Liszt: A Faust Symphony, S. 108: III. Mephistopheles
Mozart, Cherubini, Beethoven, Tchaikovsky, Rachmaninov, Verdi
Don Giovanni, K. 527, Act I: Recit. Ah del padre in periglio
Strauss, R: Ariadne auf Naxos, Op. 60, Opera, Act III: "Circe, Circe, kannst du mich hören?" (Bacchus, Ariadne, Najade, Dryade, Echo)