Elena Tsagrinou (; born November 16, 1994) is a Greek singer. Tsagrinou began her career as the lead singer of the Greek band OtherView, until beginning a solo career in 2018. She represented Cyprus i
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 0xbbb5f451629f3e81f80f286048163d6cb83a4ba62fe76a477cb64c3ba883fea1. 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/8ccf0f9f-b811-44c1-be44-1896a96e7774.json and https://artists.proofprofile.net/proofs/artist/8ccf0f9f-b811-44c1-be44-1896a96e7774.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 0xaffb6289f3a575aee611b3fb2d9ccd68464a63a5312877f567ac6b68bd0efb5a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GRPA11800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b35359cbb4f550ae5cc9fc0ba0b244cd24c1bf0bb1f1d6558ea53bf1222c2e2. 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/GRPA11800272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a2c2d726294245dad080c6b0c8e46df36fff4f4cfb7c5336e8864f06f3a037. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GRPA12000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0db0a61459ffa9b0e92f38f94d6b17fd691a0e1bed95407d19e769115293654. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GRPA11900282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a2c2d726294245dad080c6b0c8e46df36fff4f4cfb7c5336e8864f06f3a037. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GRPA12000153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db38c8b3302bf4ce78e6d81e7e9f046ef4e3dd74d7133dfb5b6bc773b01d8f. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GRPA11900378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaffb6289f3a575aee611b3fb2d9ccd68464a63a5312877f567ac6b68bd0efb5a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRPA11800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61db38c8b3302bf4ce78e6d81e7e9f046ef4e3dd74d7133dfb5b6bc773b01d8f. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/GRPA11900378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aba6fd9e153848dd14f5c487161c236682232941da008197df714456883a088. 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/GRPA12100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5053ee99ebf639c962c1adf85bc2d2038f0a97c8369995f96f24d9189f70c19. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GRPA11800146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d115c4e2dd2cad87cec5eacbd10cdb42be3a69040c581d0e820a65bae76a067. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/GRPA12100192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58a397947e24ed1e21f3ae76755c3ad0298eb84a4772a31f7b9bd04a994939b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GRPA12100412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc467ca8896c6259cbc9a3e4d902f688f33cb9180bd628b86a5cd6132a84f957. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/GRPA12200458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72dd64d7fd847b2dfd40f662174e5e0c62c85dfff255e71cceaada737f821d41. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/GRPA12300499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcee4e13d415b01bc27971b4fbd6846d739c99adde5e2c78492141caa26fd11. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DGA0R2414329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bac788b9bfc57bf9b42f0c5cef12b606c11ee1e0c342e92724f2b9b621c38f. 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/DGA0R2414339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f3168dc1f8a0488af0b38a2c416081eb14535bc1823719dc5b695ea6284316. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DGA0R2414341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94be1be2dbafc45b0a72ed2ba62d3b04330ae18e129632cfcf2a043065b2b8c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/DGA0R2414343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42097e437b53b8ad28d06445cd42158e5da30de3cb58c265ec73b636e40f0d50. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/DGA0R2414345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea921f6f06264143598da9211b6581f699ddc8b0148b1838a211ff7ce192bff. 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/DGA0R2414347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f3dae0027a8261d1ef6d4e0ad2149af34347abc0671e8fea97257f91cebf2e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/DGA0R2414350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51212986bca35c3087ac9235066c1cfff8e3fda507f8fa0dc77b149fbaecc13f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/DGA0R2414351.
El Diablo - Eurovision 2021 - Cyprus / Karaoke Version
Eurovision Song Contest Rotterdam 2021 (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f257aec1afd571b7a029c34c9e752b76628542d6abcebd168b121be1280e5d. 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/GRPA12100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0db0a61459ffa9b0e92f38f94d6b17fd691a0e1bed95407d19e769115293654. 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/GRPA11900282.