Eva Eugenio (born January 22, 1956) is a Filipino singer who was active in the late 1970s and early 1980s. She is most famous for the hit song "Tukso". Along with Imelda Papin and Claire de la Fuente,
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 0xfbb1ab8fb066bece933076caedf84c146307c3bdcfcc80e4a405e8ffe5040405. 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/ffa6dcc5-1f81-4e42-b9df-f6be16dfca58.json and https://artists.proofprofile.net/proofs/artist/ffa6dcc5-1f81-4e42-b9df-f6be16dfca58.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 0xb46aa534cf5203ad0b723be29441f5580d8ce70cd1671a8a0146916c60c71e3c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/NL8RL2306065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9f924864daaa8316c8116d68458a0186e85da54207c40d62185cf773b1341e. 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/NL8RL2306068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc716cfa17bcd79904ae8f9789276923517476447025ea1eef73e6580693bb63. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NL8RL2306069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed1ee08723a2a318849787fc380d3f4c0d5e345f042e848aae58fe350de187d. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NL8RL2306070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef676570f9e515ff11615f7e9ea22c8492b74aa01044521d2f58392d5520596a. 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/NL8RL2319273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb095232fb53135e45195d2f976092bcb2b7414741548459fb0b1a123fa8eed81. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/NL8RL2305632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc53b97f65331cdde0edfc0f2c912644e155d57124102be9fe76febb17887844d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/PHO010200079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e0600f96bd40fe64ef125a17e4496ae552e46eaf379f3654ababebe09086ee. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/PHO010200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe56d81e200c0a66ef4335f11886b35755040bc68874d1e4d3a71142e20f50690. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/PHO010200083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca0ee0563e800d9efe054e0157934ff3d6d254eaca8b85a24fad2e5f93b8fa0. 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/PHO010200089.
The Story Of: Eva Eugenio (The Ultimate OPM Collection)