Elena Davidovna Kats-Chernin (born 4 November 1957) is an Australian composer and pianist, best known for her ballet Wild Swans. Early life and education Elena Kats-Chernin was born in Tashkent, Uzb
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 0xe27d5e6c961e486261df4580261674d793590e38f216425f73c4e6088b65a94a. 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/2f4cb52a-b6e5-40b4-a41f-ca8ea095dc3e.json and https://artists.proofprofile.net/proofs/artist/2f4cb52a-b6e5-40b4-a41f-ca8ea095dc3e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x236ab23d0d9c15b75438d85036d73b4385746343fd013dc308a62fb57ecfcefa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUAB01750094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9361cf9cb5914c34e65b771c85ec1c1332a39e889b54c4f11551eaae206d17a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB01750095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6decb37098aa1a62051134163b0a36b3d54f12ce36cc125a85370ec02f1e7d8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUAB01750096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66cb558a4d0114cf36237b571c417d1a46b4d8278fb0602831edd94ad83b4fe. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB01750097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f5277d20a99274bc6d17f93ecde36060adf0f74d71e4f82f39558eaf3577f9. 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/AUAB01750098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140cfe5d1ed4bc54ea8d11fe70a97fb5cfe4253f6c57ef4734fb45b7ba028fb6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUAB01750099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff3c415966fe8eccc381970ea118ec56bd0cb7129beef286c80606e95f1d7df. 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/AUAB01750100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f54ac8db55dc6d387f03251ce90b8f47378954c6909346e57b2497ddd665dcf. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/AUAB01750101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98a207a85b4f187a40721fbfd151a5e3cfc5eb49a5697ef0ff8385d60aa6282. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/AUAB01750102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170ac78944356816f0e6d1ab0d9bf34e572e51960b21b2f1ec189cc7fe033502. 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/AUAB01750103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4416456de44b6cdae415e58a489af01fd53f212f6c5dddc3607a4ccc821eb91b. 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/AUAB01750104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf88b526a1d4656b83005ea969c92b123dbb9da7df55e28a974d9b26bcbf6a41. 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/AUAB01750105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cb77608888037002a38ca497d459f5860b324543f969714dcc7078339f0e75. 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/AUAB01750106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf95b840c6f9b4eb02bf525c88657eae6342e4484daa8597c8ffcd83a1ed7c5cc. 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/AUAB01750107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf60501b14bd6182430470b11cdf588d37c6c72836f883278a0f394216ca7cdb. 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/AUAB01750108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4940f7be62d4330063889f57a5deddd773125193b6331e3da87e94400460eb5c. 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/AUAB01750109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea7cae63900a1fedbb2cbd94b0924cbea75932c7509aae855ed334a97448e4d. 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/AUAB01750110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce240bd5e29be25500925e2abd18d98f3bae5248477c57df1a58fcc2d701f10. 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/AUAB01750111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21a9acdfa4c38dcbf96a34dfcd12e0b8c35a61587a18d09cdb92460be4334ea. 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/AUAB01750113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd86f69ce5b1642a4fd27c732d7d4944277f9289594d50658137635675b98c5. 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/AUAB01750114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605ddc14952b08119d565ae7dc54d6811308fc26e57622b8da1e6f77cc9cb8ed. 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/AUAB01750115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1517024c802c57cfac17d2a982d53a8aa9f6cbdbef7986ee15a2c24ba14ce09. 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/AUAB01750116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6efe4a871045a75dd9994c485f2c0a195e32c9a91db87fd9662b4180b4868d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUAB01750117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6465ff21663aeb27c6ab4914c59dd86999cb77f7a905ee228fa85495e764bf19. 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/AUAB01750118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd917d14b9639bded2966e3ad2bb186b07d1304ad6fea6c38fc2d0d88211a7f21. 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/AUAB01750119.