Mattias Schulstad
type: MusicGroup
description: Mattias Schulstad (born November 8, 1984) is a Swedish classical guitarist.Mattias Schulstad Early life and education Mattias Schulstad was born near Stockholm, Sweden and began to play the guitar
popularity: 20
followers: 1130
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  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
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  date published: 2026-06-15T16:39:18Z
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album: Invocación
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  date published: 2012
album: Invocación
  type: MusicAlbum
  date published: 2012
album: Invocación
  type: MusicAlbum
  date published: 2012-06-12
album: The Guitar Player
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  date published: 2023-08-04
  track: Tango en skaï
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      date published: 2023-08-04
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    additional property: OTSVerifyInstructions
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      value: 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 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
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      date published: 2026-07-30T22:27:30Z
    audio: Tango en skaï
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  track: Cavatina (from “The Deer Hunter”)
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    subject of: OpenTimestamps Proof of Existence
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      date published: 2026-07-07T18:39:05Z
    audio: Cavatina (from “The Deer Hunter”)
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  track: Blott en dag (arr. for Guitar by Mattias Schulstad)
album: The Guitar Player (In Conversation)

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Blott en dag (arr. for Guitar by Mattias Schulstad)
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additional property: OTSVerifyInstructions
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  value: 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 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
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  date published: 2026-07-29T14:28:24Z
audio: Blott en dag (arr. for Guitar by Mattias Schulstad)
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The Guitar Player (In Conversation)
type: MusicAlbum
date published: 2023-08-29