Konstantía Gourzí (Greek Κωνσταντία Γουρζή, born 31 March 1962 in Athens) is a Greek composer and conductor. She is professor of ensemble conducting and new music at the University of Music and Perfor
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1fdb857731c0f833a967b8345fd1f880a0ddb3715ce41a185fee8a6f1f9173. 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/bb407a8a-46ca-4ef3-8c2e-eac11a223f3d.json and https://artists.proofprofile.net/proofs/artist/bb407a8a-46ca-4ef3-8c2e-eac11a223f3d.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a358e9efdc1e22e18796bd03d2b29f577314a73186387dcd671223ce2fb8c0f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102299 — a six-check JSON result.
wind whispers, Op. 85: II. floating leaf
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb10fa451584edd271d0d0f04a9e557220a0276a9370f3b889574a8fc90b25a3. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102300 — a six-check JSON result.
wind whispers, Op. 85: III. gliding albatross
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5afefdc492db6233cee95310e37cd2f444dd692497aa6503b4d5a8cabd81ec3. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102301 — a six-check JSON result.
wind whispers, Op. 85: IV. shimmering light
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9127c96895723ab497a0cb442a671ed7af0dd14db90d0b7cd3ee0458914cc316. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102302 — a six-check JSON result.
evening at the window II, Op. 75b: I. The yellow moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef9167cbaf3e82a73a900cd2dcfeadfade633dc2e69ee26a92dcdbc3fdbaae3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102304 — a six-check JSON result.
evening at the window II, Op. 75b: III. the Yellow moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e47c4a6f344baf1f4d85df5188dbad531eb61068c1a16b86f6c9aea6b321ff0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102306 — a six-check JSON result.
evening at the window II, Op. 75b: VI. in your arms
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173180f995bb97113de3eb076f3cb73e59b324a5234f484e0ec161327afa8b6a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102309 — a six-check JSON result.
evening at the window II, Op. 75b: VII. The Yellow Moon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc86d52620a60de75aea3f88dbf303931e25ac7186e05773b09dfdfc0559449de. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102310 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60628d18664c81e86c42efbcd34d612ee622d997e8130de09e759a099516ec2e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102317 — a six-check JSON result.
melodies from the sea, Op. 86: II. turtle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1a170ebcd0d90a0d651406b866e9b9e0529157882e44cd42fcdcfda8ccf577. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102320 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0cafd1de3c8ee5604d3cfcecdc2fbbf8bf241774be0912ec06f8d3336404d0. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102323 — a six-check JSON result.
melodies from the sea, Op. 86: VI. reflections
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234085fba2622492247aaf6e66e46d5c867c2118e95111ccfbca4f78e8041c70. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102324 — a six-check JSON result.
Hommage à Mozart: I. Con eleganza, intense, tanzend
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bb6e6704325f93be00ee31540cff79df6244eed84bf5a79785c2ae780a7be7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331854501 — a six-check JSON result.
Hommage à Mozart: II. Singing, sostenuto, dreamish
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca288c1a4c7f066829482b3c9c0dd5d95f47d9bcbdcd4ab49c068a602913a0fd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331854502 — a six-check JSON result.
Hommage à Mozart: III. Scherzoso, ma calmo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc527f95a1b45fa391536bcbb608642ca959da02b6c22985ebb7ac37e3b083f7b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331854503 — a six-check JSON result.
Anájikon / The Angel in the Blue Garden, String Quartet No. 3, Op. 61: I. The Blue Rose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f558580cb678111736f66f30f39d6acc2b0930330728e1c91e21afd1bc84881. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB331854508 — a six-check JSON result.
Konstantia Gourzi: Music For Piano And String Quartet
Schönberg: Pierrot lunaire plus Jazz - Berio: Folk Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0cafd1de3c8ee5604d3cfcecdc2fbbf8bf241774be0912ec06f8d3336404d0. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102323 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb10fa451584edd271d0d0f04a9e557220a0276a9370f3b889574a8fc90b25a3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862102300 — a six-check JSON result.
wind whispers, Op. 85/IV. shimmering light
Gourzi: Ny-él / Two Angels in the White Garden, for Orchestra, Op. 65: IV. The White Garden
Gourzi: Anájikon / The Angel in the Blue Garden, String Quartet No. 3, Op.61: I. The Blue Rose
Lullabies for Three Flowers for Violin & String Orchestra: I. A Lullaby for a Rose
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ce51bd0d6077132d438ee2c096b490dcd178dcf5269675842522a2d314396b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE862001554 — a six-check JSON result.