Anastasia Rizikov (born December 8, 1998) is a Canadian classical pianist. __TOC__ Biography Anastasia Rizikov was born in Toronto, Ontario, Canada. She began her studies at age of five, notably
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 0xebf34d3a607889def4e9ff2371126c35a7ba19f95c232c7c5c7f3cef0a8d714a. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c73d7a69-6130-4e91-892b-9924756f1d87.json and https://artists.proofprofile.net/proofs/artist/c73d7a69-6130-4e91-892b-9924756f1d87.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Say: Cello Sonata, Op. 41 "Four Cities": I. Sivas
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 0xd411046e0b8e396494bb3f10e4ede0a520f4fc17b92e36443db61b85df2028b2. 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/GBAYC2400456.
Say: Cello Sonata, Op. 41 "Four Cities": II. Hopa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824bb30ce4f20918952279f3e43e51e7abb987d2719c40b94188e5823b8c7b72. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/GBAYC2400457.
Say: Cello Sonata, Op. 41 "Four Cities": III. Ankara
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec9167eb81de246838b392136e3766b230269593c8107be40032067040c28938. 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/GBAYC2400458.
Skoryk: Melody in A Minor (From "Vysokyy pereval")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc03f1184bc297727fb991119d64bd3e31e2e8e2df3594b1f6a7520450082f13b. 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/GBAYC2400452.
Lysenko: Rhapsody on Ukrainian Themes No. 2, Op. 18: I. Dumka (Version for Piano Solo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed6d8c3fcc50917002d6cdd8e755a8d77411895b98313661403310abbb4085d. 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/GBAYC2400453.
Lysenko: Rhapsody on Ukrainian Themes No. 2, Op. 18: II. Shumka (Version for Piano Solo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa174d047e4637438e9ea62f9bee3b5d04b67e31cbcedbbe93b4226b2d38e756b. 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/GBAYC2400454.
Rachmaninov: 14 Romances, Op. 34: No. 14, Vocalise (Transcr. Strauss & Rizikov for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423b8dcbb37abbc84baffbdaeb174e517f751f040bf6dea43511f8addb0d7298. 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/GBAYC2400455.
Bartók: Romanian Folk Dances, Sz. 56: No. 1, Stick Dance (Transcr. Strauss & Rizikov for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf425eab9a3edf24daaf7c5c69f395cccb8e52cef64a9c88de0fdd995e768496. 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/GBAYC2400464.
Bartók: Romanian Folk Dances, Sz. 56: No. 2, Sash Dance (Transcr. Strauss & Rizikov for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830bc7fe8741ab732dde4f32dc7f6deb81e4665d92520742a813fa931786661c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBAYC2400465.
Bartók: Romanian Folk Dances, Sz. 56: No. 3, In One Spot (Transcr. Strauss & Rizikov for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ceab9b538cda38b74dcf5a2f4ea72e2d252f8a992c16087718b6ed4982c7b5. 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/GBAYC2400466.
Bartók: Romanian Folk Dances, Sz. 56: No. 4, Horn Dance (Transcr. Strauss & Rizikov for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3d3464c022a4fe15fae3bc4a3f31e4899791653976caa188ce0c8cd9058c8d. 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/GBAYC2400467.
Schnittke: Cello Sonata No. 1, Op. 129: I. Largo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c10cd5c5cceeabef3dffacdf3fb904e49a361142f3fd955c9f21e6cd013e68b. 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/GBAYC2400460.
Pärt: Spiegel im Spiegel (Version for Cello and Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9fcec163f0ca73d5fd5760109fad06a246f4e3c5b38e4a8698fa40a461d629f. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBAYC2400463.
Gianni Schicchi: "O mio babbino caro" (Transcr. for Cello and Piano) - Spotify Singles
Spotify Singles - Tribute to Maria Callas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd816a248a6cb1cac5214dee82442311f6fc49dc03e663b2c0d94b53c7514a9c3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC2302263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed6d8c3fcc50917002d6cdd8e755a8d77411895b98313661403310abbb4085d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAYC2400453.