Jefferson Ruan Pereira dos Santos (born 30 December 1999), commonly known as Jeffinho, is a Brazilian professional footballer who plays as a winger for Chinese Super League club Liaoning Tieren, on lo
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 0xa4c31d3c422893b786d436c8eefce2d517c6d0d9ef1a1b9cc35414e83f34712c. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0245d6f-fd3d-4b16-95f6-867ea8c61df9.json and https://artists.proofprofile.net/proofs/artist/b0245d6f-fd3d-4b16-95f6-867ea8c61df9.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 0x5bed68a25f671f88ad7fa64afed2cd16153a5bd8672db98922ae9d479a670997. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BXJ9E2500067.
Pagode do Jeffinho: Mais Que Amigo / Acordar Com Você / Tchau e Bença / Teu Segredo / Já Tentei / Como Nunca Amei Ninguém / Me Apaixonei pela Pessoa Errada / Mega Star / Carona do Amor / Louca Paixão (Ao Vivo)
Pagode do Jeffinho: Mais Que Amigo / Acordar Com Você / Tchau e Bença / Teu Segredo / Já Tentei / Como Nunca Amei Ninguém / Me Apaixonei pela Pessoa Errada / Mega Star / Carona do Amor / Louca Paixão (Bloco 1) - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed78f2e717dd575b4c495ce681e18838a4e2ba322a352619820a67ee0adc91b2. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZTPX2551824.
Pagode do Jeffinho: Meu Casamento / Shortinho Saint Tropez / Duas Paixões / Que Situação / Melhor Amiga da Minha Namorada / Gostosinha
Pagode do Jeffinho / Me Bloqueia / Instinto / Ela / É Natural
Pagode do Jeffinho: Autorais e Inéditas (Ao Vivo)