Elina Nechayeva (; born 10 November 1991) is an Estonian soprano. She represented Estonia in the Eurovision Song Contest 2018 in Lisbon, Portugal, with the song "La forza". Career In 2009, she made h
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 0xb9e427cc357d42c591aaf571643ca18c38f978913be9d76f6818bf353fe66089. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d850c09-f50e-434e-9906-3df63e8a2bcc.json and https://artists.proofprofile.net/proofs/artist/3d850c09-f50e-434e-9906-3df63e8a2bcc.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 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 0xfdb43949d1655e996b8722aa32a739d86ffdd5677d858b201654037383b7de98. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/EEMS11800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62a75d5b505ee5e7e6f7454dc190a39e33a10cb013cdc6d5a5a1399ff76d94f. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/EEMS11900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ec9246a15e298e4998215833c0041c2853ae2abc484d2e20e2bbf3635514f63. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/EENK32100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3384ec2570b81a622cc955024bc91d9fa705d275c175b928d728077981815d0. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/EENK32400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd7fdfe974b3a05cda6e044c609aebe224c4d08c557dcc03027f869415045f9. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/EENK32400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5d8b4386b1ac5e2fa7bdff749cea7b1e4c3a14b0a7f6f5543736b564ef58c1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/EENK32400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x475e6e6ac182474787e303fd6d9766dd98be4dc70f7d194924e7510d6495ca51. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/EENK32400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c677d5a87ab95414d6c8dc0550d95e239886d78705526057a4e2bcca4370a7. 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/EENK32400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023ecc1e614a6e17c3c0176ed411e9441912cda2127615f9109c4783c5667a30. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/EENK32400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c0ea3e289a1f247524d772d911cd91591748c5e7bb3fd45afa89ff884f6fc3. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/EENK32400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512225db2e8771a74c6e4410af5f564d9e8ab09860600114a4b6f323e4958270. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/EENK32400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7d37faab1ef94ebc792b4e96c3a6fedfcb4649a301ed2e207ab02990bead91. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/EENK32400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fbe7cf33c0157acce5345491c52c2a9f9441e790bd33da5a5861b42800ec5d. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/EENK32400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5223e045ed7381bdcd74b996bfa77772da898300171bef0c6b971cfff3fd06a9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/EENK32400011.