Elena Xanthoudakis (born 1978) is an Australian operatic soprano. Life and career Xanthoudakis was born in Mount Beauty to Greek father and Australian mother, and raised in Bentleigh. After graduat
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 0x4e3a78b95bfb433e8be7e8b9d8b76c59ce4ae4412ed7003e82ffe112982a8ba9. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d39306fd-1679-4b99-b108-32d55306c7f4.json and https://artists.proofprofile.net/proofs/artist/d39306fd-1679-4b99-b108-32d55306c7f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il maestro. Italian Music by Puccini, Rossini, Verdi...
Jewels of the Bel Canto: Arias by Donizetti, Bellini, Verdi & Rossini
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 0x0081decad66a5f06c585baad299688b4a3c0f78899a8e751ed260ad2be2d2ff7. 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/GBLLH1437403.
L’elisir d’amore: "Prendi, per me sei libero"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d786070321f610eab8ffb18c6c2a0b7d8ca18f5ba71d6834be98dffa414085. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBLLH1437409.
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
Rossini: Guillaume Tell, Act 3 Scene 2: No. 16, Pas de soldats (Allegro brillante)
Orchestra dell'Accademia Nazionale di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd772726ee60bb37267a1289db8e3c09999f29e38c68ec5717d474ccb2b48aee1. 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/GBAYC1101328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4768af6599ee06b99fd7b9d63b72c51ed64f83cad8f43f08febc9310d81244a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBAYC1101252.
Rossini: Guillaume Tell, Act 2 Scene 1: No. 8, Choeur, "Quelle sauvage harmonie" (Chorus)
Coro dell'Accademia Nazionale Di Santa Cecilia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cedae83103e59ca6cd719bae58b7e421ea130ccb498322b38ceb1f4afd170ae. 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/GBAYC1101288.
Rossini: Guillaume Tell, Act 1: "Quel jour serein le ciel présage !" (Chœur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9d3e0e818614f057e21760db893c55d6a96f32f0d3b5e69b6060ac0da366e1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC1101255.
Rossini: Guillaume Tell, Act 1 Scene 1: Quatuor, "Accours dans ma nacelle" (Ruodi, Guillaume, Jemmy, Hedwige)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db3354ca1f341de2b5a66f51c59682e8f7d1ba6e8cc5f0f03cb36f6069e657d. 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/GBAYC1101256.
Rossini: Guillaume Tell, Act 2 Scene 2: No. 9, Récitatif et Romance, "Ils s'éloignent enfin" (Mathilde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106c2a2caad8f24ac82b941b2b4da062ce8ef74f3b5aaa9a8ee4948335693df9. 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/GBAYC1101291.
Rossini: Guillaume Tell, Act 1 Scene 1: Intermezzo (Allegretto, "Ici l'on entend le ranz des vâches")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec306c683068cdb582457a107fbf85b3a580d9b17ae55b62b10655f93dce4aa. 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/GBAYC1101257.
Rossini: Guillaume Tell, Act 2: "Sombre forêt" (Mathilde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b2312c6e0e593d0a9795037fc24d7665a2f12ab25faf6f9c7836d2c2f98a35. 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/GBAYC1101292.
Rossini: Guillaume Tell, Act 2 Scene 3: Récitatif, "Ma présence pour vous est peut-être un outrage?" (Arnold, Mathilde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1979ff8072c738d409d2f63c88ee62a43b91015f0cb06667cbefb8a923cd1f. 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/GBAYC1101294.
Rossini: Guillaume Tell, Act 1 Scene 2: "Pasteurs, que vos accents s'unissent" (Melchthal, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a216ae97ff349d5ef1f1a2883b065ab82230b216caefc13fcb6d854f6ff511. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAYC1101261.
Rossini: Guillaume Tell, Act 2 Scene 3: No. 10, Duo, "Oui, vous l'arrachez à mon âme" (Arnold, Mathilde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc438e3c38aece51d49bced8d61eb1ef8c20464cb9424fa7596f5d71c48f06af3. 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/GBAYC1101295.
Rossini: Guillaume Tell, Act 2 Scene 3: "Doux aveu! ce tendre langage" (Arnold, Mathilde)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6585b99b5a4eb505bd3424a8b343ba586e0f4cafaf0504de9d920163b3a10d9a. 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/GBAYC1101296.
Rossini: Guillaume Tell, Act 1 Scene 3: Récitatif, "Contre les feux du jour que mon toit solitaire" (Guillaume, Melchthal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x660d9f793f3db7cbb61650007453cb9ccbe05c0bd0304cad0be261f4320e5034. 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/GBAYC1101264.
Rossini: Guillaume Tell, Act 2 Scene 4: "Tu n'étais pas seul en ces lieux?" (Arnold, Guillaume, Walter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15b3a4fedf6457be3babe1be13c2d5bf4e38bf394c06b426ad7d292ac8eb9369. 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/GBAYC1101300.
Rossini: Guillaume Tell, Act 1: Pas de six
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee51fa1107185874a8fe67b9ed17d6779da825bcc5e5107558f23967fb92c716. 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/GBAYC1101276.
Rossini: Guillaume Tell, Act 2 Scene 7: "Honneur aux soutiens de nos droits!" (Guillaume, Arnold, Walter, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf457f1ce27fbbce6be834ce153c4bd13f68c2138b717fcb9708c909da4b6ba09. 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/GBAYC1101314.
Rossini: Guillaume Tell, Act 2 Scene 7: "L'avalanche roulant de haut des nos montagnes" (Guillaume, Arnold, Walter, Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824d52716d525ac10ab6229d413f900b43269addb8bbdf28c86a91ae7b92c346. 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/GBAYC1101315.
Rossini: Guillaume Tell, Act 1 Scene 11: No. 7, Finale, "Dieu de bonté, Dieu tout-puissant" (Chorus, Rodolphe, Jemmy, Hedwige, Melchthal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea54fc10941705a5d08c88950a975b8f99fecb48ebe4ac01a8d48c881bb8087. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAYC1101283.
Rossini: Guillaume Tell, Act 3 Scene 1: "Sur la rive étrangère" (Mathilde, Arnold)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b4959ac6c78099d5bc44f4b3ce7ffab20ea5885fab86bc3e8a7bce3a9d7616. 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/GBAYC1101322.
Rossini: Guillaume Tell, Act 1: Pas d'archers - "Gloire, honneur au fils de Guillaume" (Chœur, Jemmy, Hedwige)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722ee9756d53683e096da8ef6623c719cf5a2e1e9b91d5c6ee4603c3914afb50. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBAYC1101277.
Haydn: L'anima del filosofo, Hob. XXVIII:13 (Live)
The Makropulos Case, JW 1/10, Act I: Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8599e0d112ed026bb31bd5b9314aad2749eb65d730a9369c16011ef9c61a5971. 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/GBLWD0701101.
The Makropulos Case, JW 1/10, Act I: Daddy, she really is wonderful (Vitek, Gregor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e19f59f66ab25bef680d2cef188a8ff8beceeefbf5f38474c4fff1ee1e196. 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/GBLWD0701103.
The Makropulos Case, JW 1/10, Act I: Come this way please (Kolenaty, Kristina, Marty, Gregor)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9097e49394a7d712719af976daffcf2c6913f1fed7abaac95c5dcef4f2779f61. 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/GBLWD0701104.
Die Verschworenen (Der häusliche Krieg), D.787: Romanze
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cc3b5826feb19b6a921601ccb71a22280a411569ec9b0a7bb67a58b08f7034. 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/GBLLH1639808.
Rota: Mysterium - C'era Una Volta Nella Grotta - Il Presepio - Il Natale Degli Innocenti