Luís Fernando Coelho Trigacheiro (born 7 May 1997) is a Portuguese singer. He won the eighth season of The Voice Portugal in 2021. Early life Trigacheiro was born and raised in Beja, in the Baixo Ale
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 0x3e86a8611afbae1684fc90279fc3cebcf5859065c6b28fa33398ab5efa973584. 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/8c81490a-1507-49e5-9db9-301413a77919.json and https://artists.proofprofile.net/proofs/artist/8c81490a-1507-49e5-9db9-301413a77919.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 0xe48444da85608f7b51a495cc1f06c48e7b3b3bd2e0d72a6815fb3c5efa271fa5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTUM72100658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa373ff68459afe5b06a640e2ade5c6472a589c23c03a249fff6269dc3d60ea. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PTUM72200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c14eab687a0aaf7957ccf89fc8b1191067ef23a0eb6487545fec51508a485fd. 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/PTUM72200092.
Quem Me Vê (Ao Vivo No Tivoli BBVA / 2022)
Quem Me Vê - Ao Vivo no Teatro Tivoli BBVA / 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d583d4589a0c530461cc0ff9287d4ba097232489dec9b2fbde37cf86b8708d1. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTUM72200156.
Trocas-me A Mim (Ao Vivo No Tivoli BBVA / 2022)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f72b3326da5978396f415a772d87e14692e2f0b2b611f5cf3a5564e79297569. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/PTUM72200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3bc0ac6e0c4a2cdf9e4746eaaf3d4b8c7629f72053b55175db5c338e7d54760. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/PTUM72200085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4e286caf779bdde0000375c3541bdd28087f1bc841f0bb86a5f3e8345ca577. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/PTUM72200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf000c66ae2455046c9d7b26fd83c013254b9cae491bb54d4f213c6b9ffb279d0. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:17Z), 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/PTUM72200087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8756c5b6330b9db81521c2602c1d53427334128e16d1da9687833cc24c91b21e. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:45:00Z), 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/PTUM72200088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48444da85608f7b51a495cc1f06c48e7b3b3bd2e0d72a6815fb3c5efa271fa5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PTUM72100658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82eb1a2a78e293709258e5fd6254ac00bbd57162cf6f95cb81b4cfea2094b53. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PTUM72200089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed99da6a89cd67c425b341f409a1b8771cb4880d63594392f37f29dcec5d372c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:31Z), 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/PTUM72200090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aa373ff68459afe5b06a640e2ade5c6472a589c23c03a249fff6269dc3d60ea. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTUM72200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2749d69a22fe81aa154cc14b8d23d8dc60e437bdac8ff7334dfa696acbafd18. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/PTUM72100502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f65f0ac0dcb15e0a18043e9415cf90c1f05c0f81d39a95b31fd307d4b1fdb1f. 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/PTUM72200093.
Meu Nome É Saudade - Ao Vivo no Teatro Tivoli BBVA / 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b2e717fa2c63d7aa07b08aa9bcb5b2cf8b8904a0ab51952f8a5c8f88d0c0bc. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/PTUM72200204.
Chamateia - Ao Vivo no Teatro Tivoli BBVA / 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4231f2ae1a7c63e8d2bc16c5bfe6bb189e74fc9da1bcbdd70367d3bc1c988e0a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PTUM72200206.
Mondadeiras - Ao Vivo no Teatro Tivoli BBVA / 2022
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b98775177526df5ca0a40a3bdd28552265b049aa04d9949e3af6f6320384f6. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/PTUM72200207.
Gotinha De Água (Ao Vivo no NOS Alive 2023)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ab889f9f7632800d8877f6a866847bcf3fff58c6c6ca7885a3796edf0cf59d. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/PTUM72400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbd7fd916517f81d885a307bd294792637da41d05e551ad38b15adcd2116553. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/PTUM72400174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f20c07a5b07b369878a08d8a2d7d99fbef2355d954ecdc1afbf8b28b11f621. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/PTUM72400175.