Tassis Christoyannis (born Piraeus, 1967) is a Greek operatic baritone. He studied conducting and composing at the Athens Conservatory and singing with Aldo Protti, winning the Aldo Protti Gold Medal
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 0x6e1d65659bef350b1dcf5951091c1334957c50a0fd9340a8a30f7a662907f2c4. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed17c46b-c0c1-497b-8b8c-dbb0ae8568f9.json and https://artists.proofprofile.net/proofs/artist/ed17c46b-c0c1-497b-8b8c-dbb0ae8568f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tarare, Prologue, Scène 3: « Un mot encor » (Le Génie du Feu, la Nature, des ombres et Astasie) – « Qu'un jeune cœur » (La Nature)
Les Chantres du Centre de Musique Baroque de Versailles
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 0x77c67d760cf3c599197bf95d447df49ec126809063c22d3d3a35eabccf3e6e97. 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/FROV61820805.
Tarare, Prologue, Scène 3: « Que sont ces deux superbes ombres » (Le Génie du Feu, la Nature)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802fb0c8625d9c841c2abce66a86bdfc6d32e91016ed673695cbbb894caf2fee. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FROV61820806.
Tarare, Acte I, Scène 3: « Dans les plus beaux lieux de l'Asie » (Chœur d'esclaves du sérail, Atar) – « Ô sort affreux » (Astasie, Spinette, Atar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4494b8a076c4b982c76c34f45f8299ba9067d0c348700b18d3f37e399d69f1cb. 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/FROV61820810.
Tarare, Acte I, Scène 6: « Que me veux-tu, brave soldat ? » (Atar, Tarare) – « Soldat qui m'as sauvé la vie » (Atar, Altamort, Tarare)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf875786cbff9848c323c185187d8b2a3bc9c4edceca7e803a4a3123f48b69091. 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/FROV61820813.
Tarare, Acte II, Scène 8: « Qui veut la gloire » (Tarare, chœur) – « Je ne puis soutenir la clameur importune » (Atar, Altamort)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d68e2fd9b97022260d7e074b3f3ab65858656eeb1f819d27d774a3ad063d403. 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/FROV61820828.
Tarare, Acte II, Scène 8: « Brama ! Si la vertu t'est chère » (Chœur général)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c4b013a8f3a499aa580597cce93ba421b2fd647c691caec8f6503549e001fd. 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/FROV61820830.
Tarare, Acte III, Scène 4: « Je suis natif de Ferrare » (Calpigi, chœur, Atar, Spinette) – « Tarare ! » (Astasie, chœur, Atar, Spinette)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d60be5e19264474301fc421599e54df0f855af4ee403e0319f9d1a5740d84a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FROV61820842.
Tarare, Prologue, Scène 2: « De l'orbe éclatant du soleil » (Le Génie du Feu, la Nature) – « Froids humains, non encor vivants » (La Nature)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29b6c47eb76d7c2c97e7312bc2a8c7343e8e3f159d065550cfc9e62df177cc7. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FROV61820802.
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
Tarare, Prologue, Scène 3: « Privés des doux liens » (Le Génie du Feu, la Nature) – « Brillant soleil » (La Nature) – « Gloire à l'éternelle sagesse » (Le Génie du Feu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05098574d500dc3286ef8d0e657d7e77df120015c127c07e2e4c3667e3ec1d7c. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/FROV61820804.
Tarare, Prologue, Scène 3: « Futurs mortels, prosternez-vous » (La Nature, chœur des Ombres) – « Sois l'empereur Atar » (Le Génie du Feu, la Nature) – « Enfants, embrassez-vous » (La Nature)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f49a33d21f71a3f00adda903972f42ba7d2347cbe4e6912982865f51c435538. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FROV61820807.
Tarare, Acte II, Scène 1, Scène 2: « Seigneur, le grand-prêtre Arthenée » (Urson, Atar) – « Les sauvages d'un autre monde » (Arthenée, Atar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eafe1db42398c84cd50c7895386de481c17e573992aaefc1340663614099df. 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/FROV61820818.
Tarare, Acte II, Scène 2: « Ah ! D'une antique absurdité » (Arthenée, Atar) – « Crains de payer de ta couronne » (Arthenée, Atar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x191ae8bcf52784863d1d9addb56d1f353757fcc63b5d15d0d8bdf0bb92a80c59. 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/FROV61820820.
Tarare, Acte II, Scène 2, Scène 3: «Qu'une grande solennité » (Atar) – « Ô politique consommée » (Arthenée)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8670fd57731b676d32abc7f618ed8988838b80b9eb70f3d990c9f62946337a. 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/FROV61820821.
Tarare, Acte II, Scène 7: « Sur un choix important le ciel est consulté. » (Arthenée, un prêtre, Elamir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a456787ad7e42784b1380f4c65ce3e3777f248f2c69e2ad86f2899c6fc72441. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FROV61820825.
Tarare, Acte II, Scène 8: Grande marche « Prêtres du grand Brama ! » (Arthenée, chœur, Elamir, Altamort, Atar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913feef50d7d176ec4174047295794f17fed8e1fdea223bcc4366832227578bb. 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/FROV61820827.