Matías Zaracho
type: MusicGroup
genre: polka
description: Federico Matías Javier Zaracho (born 10 March 1998) is an Argentine professional footballer who plays as an attacking midfielder for Racing Club. Club career Zaracho came up through the youth ranks o
popularity: 10
followers: 1043
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8fd5eb5d3c57a78677d1ba8bf103ed9cd1dfb89595da7959cb82aad0a8357277
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953895
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953895
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fe8fea4-392a-49a0-aa14-f4753fca460c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/0fe8fea4-392a-49a0-aa14-f4753fca460c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/0fe8fea4-392a-49a0-aa14-f4753fca460c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T05:46:35Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8fd5eb5d3c57a78677d1ba8bf103ed9cd1dfb89595da7959cb82aad0a8357277","name":"Matías Zaracho","registered_at":"2026-06-15T19:05:15Z","symbol":"NIM0803058","token_address":"0x0d2dd0197950f3a814ee7290233b47a3532ee620","type":"artist","uuid":"0fe8fea4-392a-49a0-aa14-f4753fca460c"}
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 0x8fd5eb5d3c57a78677d1ba8bf103ed9cd1dfb89595da7959cb82aad0a8357277. Chain 2 (Bitcoin): anchored in block 953895 (2026-06-16T05:46:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0fe8fea4-392a-49a0-aa14-f4753fca460c.json and https://artists.proofprofile.net/proofs/artist/0fe8fea4-392a-49a0-aa14-f4753fca460c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-16T05:46:35Z
  text: {"copyright_id":"0x8fd5eb5d3c57a78677d1ba8bf103ed9cd1dfb89595da7959cb82aad0a8357277","name":"Matías Zaracho","registered_at":"2026-06-15T19:05:15Z","symbol":"NIM0803058","token_address":"0x0d2dd0197950f3a814ee7290233b47a3532ee620","type":"artist","uuid":"0fe8fea4-392a-49a0-aa14-f4753fca460c"}
album: FLOR OLIVEÑA
  type: MusicAlbum
  date published: 2024-10-31