Matheus de Vargas (born 18 June 1996) is a Brazilian footballer who plays as a central midfielder for Paysandu. Club career Born in Cláudia, Mato Grosso, Vargas represented Rio Preto, União Barbarens
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 0xbe95114acba2876c29fa9c07db9da69be4131e768501405151cb2ee9ed89685b. 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/bb27197e-da23-4124-8de0-92abb2f5cd87.json and https://artists.proofprofile.net/proofs/artist/bb27197e-da23-4124-8de0-92abb2f5cd87.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 0xff6a0ae22f4cb9da74bac65840a6a0ab3e12d254db5aefbcc4a27400d07ea675. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SGW502330095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff6a0ae22f4cb9da74bac65840a6a0ab3e12d254db5aefbcc4a27400d07ea675. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SGW502330095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad88d4f1be8ad97a912a5529cc06039e32fa6a62fc756dda080fa5ae10021535. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BX49M2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc6c7bac5ec2f1c8746b62c321604dcc5f49e7b57eb802fc9cc72c9f02bfc695. 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/BX49M2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b3f7f1ccf5defdc74671af03fda7ffad3ca5a6884d7125ad05a8f1528f2133. 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/BX49M2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d7630fba939a3b327c3d2b19c1798869ce720c27bd79cec3922449b3fd7b4e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/BX49M2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x137bc99f5577584c3b0513f843037ff540994b65c0fa913aef9493552f02a72e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BX49M2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad88d4f1be8ad97a912a5529cc06039e32fa6a62fc756dda080fa5ae10021535. 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/BX49M2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f350b085e03d89bcd653b02ab0c8fbcdaed95d7e6c317ae3b933af728728380. 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/BX49M2300006.
Toma Juízo / Você Marcou Pra Mim / Quem Será Seu Outro Amor?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87763e6c4cb7b9b2f1c26d9bbbc5195ee8f514b756a4a9094ccfd57c43e5813f. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BX49M2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ae156fe2f3ca32731c2fab9ffc70f23624e8c0a92f90bb6d1519e65aaacacd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/BX49M2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87763e6c4cb7b9b2f1c26d9bbbc5195ee8f514b756a4a9094ccfd57c43e5813f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/BX49M2400002.
Se Ainda Existe Amor / Quando o Amor é Pra Valer / Volte Amor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b190b72333f739b6749accc48a4a8fd29f96785b7b707a37d969cf51fcd18b. 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/BX49M2400003.
Mexe Que é Bom / Peão Apaixonado / Festa de Rodeio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd208275fdb5face9d134abbb40dfc469ada897ae666993404b2c4d41c052c4b. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BX49M2400004.
Programa de Fim de Semana / Como Eu Te Amo / A Solidão é Uma Ressaca
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaefb4d34640f531ef55fe8c97664a9fab0ae7b5062b9ffc21e495ea45357a6a. 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/BX49M2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd208275fdb5face9d134abbb40dfc469ada897ae666993404b2c4d41c052c4b. 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/BX49M2400004.
Frio da Solidão / Pareço Um Menino / Amor Maior
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150e889754e07ffe194bcaa9f83dfe23bb4a814d164ef4bc983c4f4ffe3bfa71. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:56:38Z), 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/BX49M2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaefb4d34640f531ef55fe8c97664a9fab0ae7b5062b9ffc21e495ea45357a6a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BX49M2400007.