Xénia Maliarevitch (born in 1980) is a contemporary French classical pianist. Biography After starting piano lessons in Saint Petersburg, her family moved to Nancy. In 1987 she entered the . She wa
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 0xfc88f5ae2556da5fdcfab3f451520b8114c0d1000a71581640767bb6acda8b3d. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95f41844-e88b-420a-8001-d3a93e251605.json and https://artists.proofprofile.net/proofs/artist/95f41844-e88b-420a-8001-d3a93e251605.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x3ebf3c11348270d55f77da66316af7ac1a03bd18a9207066a51a7740d623eb11. 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/FR50X2294702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae50c4d7b4b80f9a89b240f2ba49b077f30d3b0c8fc308a3bb8312010fed205. 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/FR50X2294703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb151cebe56bb43e9dcfb4f75bf8e1ed09e5d49a8d60e1bbc2c92abd1a25400aa. 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/FR50X2294704.
Lullaby (Arr. for Mezzo-soprano, Violin and Piano by Nicolas Worms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde76d35af322e98e11c3277e455908c56fe3c002e98c536b9affc7440d94c800. 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/FR50X2294705.
Tsirani Tsar (Arr. for Violin and Piano by Avet Gabrielian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecd7b56bd3357014192883f9792df6d345989d739568f55bd726b349080e57a. 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/FR50X2294706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503c04a5c5b810764b9adb03e7f2787f6a141c263fb1f34cbeb415d1aa5a6e7a. 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/FR50X2294708.
Krunk (Arr. for Violin and Piano by Sergey Aslamazian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3b661e0c830a3dae4852271a0d85f7c7d2e06febf11fedcb35a82d7dd07555. 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/FR50X2294709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7171ede01635c2aa94be587ca7abe42a725c8cec2411055eb96469803be308e4. 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/FR50X2294714.
Chinar es (Arr. for Mezzo-soprano, Violin and Piano by Nicolas Worms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c6097eb8a323660e7821e093ca7f183902c29938de7d8b9cf5a7d8dc1e62e5b. 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/FR50X2294716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dacb2306bd6002ad3515cc0a63c4cb0d163fcec0323a5493254501011a8bea5. 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/FR50X2294718.
Lamento (Arr. for Mezzo-soprano, Violin and Piano by Nicolas Worms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a0a8add6527c76101ef237a03fa9928b8adacba9c434e069b48152f725cda. 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/FR50X2294701.
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 0xb698fff7a446f9faeefe8e3ce14303e082040545fb37078e6b729fb09730629d. 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/FR50X2294707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb63e1c647d1fbd44a7940a41f41874038ae62fc6fd344375954a69d86f442ae. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2294710.
Jan, ay loosin! (Loosin yelav) (Arr. for Mezzo-soprano, violin and piano by Nicolas Worms)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4f25171462a88fd6349c8a2f7fa6f34cb8409fab745935eac18358c0dfa0f4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2294711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8944bd0bbdc54ea18f2b1aea09bde0383a4bcbdcf98f56db110163683a2b6a02. 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/FR50X2294712.
Lullaby (Arr. for Violin and Piano by David Haroutunian)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3fbfff65274dbef644c3519917832df0bf152ada3fb83bde4e9132650e896d6. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2294713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d40f4e05c7091097bf081ecc6f9ae3c855b7a35968edc549bbd4376312d0e61. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2294715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b8bff0c7e8caa30027827ebc0be4a65d3b0998ac5d5253c3d0757859d2ab63. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2294719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x253cd621a87374653b60d9d8af7d78f343f42a40565ce24aa870dbb6f6fc5b64. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR50X2294720.