Theodosia Ntokou (, Rhodes Greece) is a Greek classical pianist. Biography Theodosia Ntokou was born on the island of Rhodes to a family of music lovers. Her mother, Mary Vergoti is a school teache
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 0xe7c341b98ba71eb0b195818e5e4093b7f9a3beeb8f4a85cf50a1f09ed68bfcb1. Chain 2 (Bitcoin): anchored in block 954689 (2026-06-21T10:35:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2319f05-2e62-42ef-abc8-b03e85c71dd5.json and https://artists.proofprofile.net/proofs/artist/e2319f05-2e62-42ef-abc8-b03e85c71dd5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Beethoven: Symphony No. 6 in F Major, Op. 68 "Pastoral": III. Lustiges Zusammensein der Landleute. Allegro (Arr. Bagge for Piano 4-Hands)
Chopin, Haydn, Mozart, Beethoven, Schubert, Brahms
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 0x55ca27b6477c215b8a232c52ddec128afcc50f7bb35a933859999429c44255b9. 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/GBPFW2000109.
Beethoven: Symphony No. 6 in F Major, Op. 68 "Pastoral": IV. Gewitter. Sturm. Allegro (Arr. Bagge for Piano 4-Hands)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28491ce1fa374ad974faf26d0262516a9856a32c9c36b99cb6ddcb85cd05ea67. 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/GBPFW2000110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ca27b6477c215b8a232c52ddec128afcc50f7bb35a933859999429c44255b9. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBPFW2000109.
Le jardin féerique de Martha Argerich - Ravel, Chopin, Mozart, Schumann, Brahms, Prokofiev, Beethoven
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ca27b6477c215b8a232c52ddec128afcc50f7bb35a933859999429c44255b9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBPFW2000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28491ce1fa374ad974faf26d0262516a9856a32c9c36b99cb6ddcb85cd05ea67. 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/GBPFW2000110.