Marcelo Mattos
type: MusicGroup
genre: gregorian chant
description: Marcelo Mendonça de Mattos or simply Marcelo Mattos (born 10 February 1984) is a Brazilian former football defensive midfielder. He is known for his positioning, tight marking of the opposing player
popularity: 10
followers: 993
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x1c639bfe143e1e9a5d1cb0d0bff592afd95f9669d7f2bd006a8bc67732efa684
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5569415a-4c4d-4d88-af17-7b854625451c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5569415a-4c4d-4d88-af17-7b854625451c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5569415a-4c4d-4d88-af17-7b854625451c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x1c639bfe143e1e9a5d1cb0d0bff592afd95f9669d7f2bd006a8bc67732efa684","name":"Marcelo Mattos","registered_at":"2026-06-16T19:17:00Z","symbol":"NIM1149534","token_address":"0xeb95c360b21d82d3ffd293eaba91e581761bd8d6","type":"artist","uuid":"5569415a-4c4d-4d88-af17-7b854625451c"}
additional property: OTSVerifyInstructions
  type: PropertyValue
  value: 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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c639bfe143e1e9a5d1cb0d0bff592afd95f9669d7f2bd006a8bc67732efa684. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5569415a-4c4d-4d88-af17-7b854625451c.json and https://artists.proofprofile.net/proofs/artist/5569415a-4c4d-4d88-af17-7b854625451c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x1c639bfe143e1e9a5d1cb0d0bff592afd95f9669d7f2bd006a8bc67732efa684","name":"Marcelo Mattos","registered_at":"2026-06-16T19:17:00Z","symbol":"NIM1149534","token_address":"0xeb95c360b21d82d3ffd293eaba91e581761bd8d6","type":"artist","uuid":"5569415a-4c4d-4d88-af17-7b854625451c"}
album: O Gosto das Pequenas Vitórias (Como Vencer os Medos Que nos Afligem)
  type: MusicAlbum
  date published: 2010-05-03
album: Reaviva o Dom de Deus (Ano Vocacional da Família Paulina)
  type: MusicAlbum
  date published: 2019-01-25