Matthias Schmid
type: MusicGroup
genre: opera
description: Matthias Schmid (born 12 December 1980 in Vienna) is an Austrian sailor, who specializes in two-person dinghy (470) class. He represented Austria, along with his partner Florian Reichstädter, in two e
popularity: 2
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xf53a3f0cc336e1d93fd84729a57022917a22b17ca89e99aaeb837a39f91b8fdb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5e9aa983-300d-4745-b955-015511450f5c.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/5e9aa983-300d-4745-b955-015511450f5c.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/5e9aa983-300d-4745-b955-015511450f5c
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xf53a3f0cc336e1d93fd84729a57022917a22b17ca89e99aaeb837a39f91b8fdb","name":"Matthias Schmid","registered_at":"2026-06-16T22:35:22Z","symbol":"NIM1196871","token_address":"0x098337294c1f3283eba73f1128517606c7fb8b18","type":"artist","uuid":"5e9aa983-300d-4745-b955-015511450f5c"}
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 0xf53a3f0cc336e1d93fd84729a57022917a22b17ca89e99aaeb837a39f91b8fdb. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5e9aa983-300d-4745-b955-015511450f5c.json and https://artists.proofprofile.net/proofs/artist/5e9aa983-300d-4745-b955-015511450f5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xf53a3f0cc336e1d93fd84729a57022917a22b17ca89e99aaeb837a39f91b8fdb","name":"Matthias Schmid","registered_at":"2026-06-16T22:35:22Z","symbol":"NIM1196871","token_address":"0x098337294c1f3283eba73f1128517606c7fb8b18","type":"artist","uuid":"5e9aa983-300d-4745-b955-015511450f5c"}