Magnus Broo
type: MusicGroup
genre: free jazz
description: thumb|300 px|Magnus Broo at Aarhus Festival, Denmark 2017 Magnus Broo (born 27 June 1965) is a Swedish jazz musician (trumpet) known from own recordings and collaboration with Norwegian jazz musician
popularity: 4
followers: 342
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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
subject of: OpenTimestamps Proof of Existence
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  date published: 2026-06-20T14:36:29Z
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track: Now Please Don´t You Cry Beautiful Edith
track: Eti
track: Part 3

Now Please Don´t You Cry Beautiful Edith
type: MusicRecording
duration: PT8M27S
duration ms: 507893
explicit: false
by artist: Amanda Sedgwick
by artist: Magnus Broo
by artist: Filip Augustson
by artist: Jesper Kviberg
in album: Women in Swedish Jazz - Caprice Records
  type: MusicAlbum
  date published: 2016-12-09
isrc code: SEAGA9603040
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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
additional property: ProofProfileEvidenceStatus
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additional property: TokenDeploymentConfirmed
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additional property: ContentHash
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additional property: BitcoinTime
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subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc2f625ed869f90afa00ca564a50ab2632420132841f3e4b5ecc5917ccd4420. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEAGA9603040.
  date published: 2026-06-13T12:47:07Z
audio: Now Please Don´t You Cry Beautiful Edith
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  additional property: Danceability
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  additional property: Acousticness
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  additional property: Instrumentalness
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  additional property: Liveness
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  additional property: Valence (Positivity)
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  additional property: Key Name
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Eti
type: MusicRecording
duration: PT10M51S
duration ms: 651653
explicit: false
by artist: Angles 9
by artist: Martin Küchen
by artist: Alexander Zethson
by artist: Mattias Ståhl
by artist: Johan Berthling
by artist: Andreas Werliin
by artist: Magnus Broo
by artist: Mats Äleklint
by artist: Goran Kajfes
by artist: Eirik Hegdal
in album: Injuries
  type: MusicAlbum
  date published: 2014-05-19
isrc code: QMFMF1453575
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additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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
additional property: ProofProfileEvidenceStatus
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subject of: OpenTimestamps Proof of Existence
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  date published: 2026-07-08T03:53:27Z
audio: Eti
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Part 3
type: MusicRecording
duration: PT8M16S
duration ms: 496057
explicit: false
by artist: Paal Nilssen-Love
by artist: Ingebrigt Håker Flaten
by artist: Isabelle Duthoit
by artist: Hanne De Backer
by artist: Signe Emmeluth
by artist: Magnus Broo
by artist: Johan Holmegard
by artist: Alexander Hawkins
in album: GUTS & SKINS
  type: MusicAlbum
  date published: 2023-05-26
genre: free-improvisation
genre: free-jazz
genre: avant-garde-jazz
genre: modern-free-jazz
genre: norwegian-experimental
genre: norwegian-jazz
subject of: OpenTimestamps Proof of Existence
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec5d19eb579047640dcb424d4f85a852425f0183a15aa142d1c01f68d6b53a1f. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/QM4TX2338861.
  date published: 2026-08-01T00:15:43Z
audio: Part 3
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additional property: OTSTimestamp
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additional property: OTSVerifyInstructions
  type: PropertyValue
  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