Oliver Schroer
type: MusicGroup
genre: celtic
description: Oliver Schroer (June 18, 1956 – July 3, 2008) was a Canadian fiddler, composer, and music producer. Early life Oliver Schroer grew up in Vandeleur, Ontario, a small farming community near Markdale in
popularity: 14
followers: 1241
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953803
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953803
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e84ee57d-d656-4a9d-86c3-108f5f38f698.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/e84ee57d-d656-4a9d-86c3-108f5f38f698.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/e84ee57d-d656-4a9d-86c3-108f5f38f698
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T15:41:00Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x10d288c270a57e51e0394cfc5e901ddb883e8988a74ab0ebf1b7a29c1772f0da","name":"Oliver Schroer","registered_at":"2026-06-15T04:53:22Z","symbol":"NIM0688051","token_address":"0x9201b2528132a89490195d5f4aa4475e025f490d","type":"artist","uuid":"e84ee57d-d656-4a9d-86c3-108f5f38f698"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d288c270a57e51e0394cfc5e901ddb883e8988a74ab0ebf1b7a29c1772f0da. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e84ee57d-d656-4a9d-86c3-108f5f38f698.json and https://artists.proofprofile.net/proofs/artist/e84ee57d-d656-4a9d-86c3-108f5f38f698.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T15:41:00Z
  text: {"copyright_id":"0x10d288c270a57e51e0394cfc5e901ddb883e8988a74ab0ebf1b7a29c1772f0da","name":"Oliver Schroer","registered_at":"2026-06-15T04:53:22Z","symbol":"NIM0688051","token_address":"0x9201b2528132a89490195d5f4aa4475e025f490d","type":"artist","uuid":"e84ee57d-d656-4a9d-86c3-108f5f38f698"}
album: Jigzup
  type: MusicAlbum
  date published: 1993-11-11
album: Jigzup
  type: MusicAlbum
  date published: 1993-11-11
album: Whirled
  type: MusicAlbum
  date published: 1993-11-12
album: Whirled
  type: MusicAlbum
  date published: 1993-11-12
album: Stewed Tomatoes
  type: MusicAlbum
  date published: 1996-11-08
album: O2: Solo Fiddle
  type: MusicAlbum
  date published: 1999-11-12
album: O2: Solo Fiddle
  type: MusicAlbum
  date published: 1999-11-12
album: Restless Urban Primitive
  type: MusicAlbum
  date published: 2001-11-10
album: Restless Urban Primitive
  type: MusicAlbum
  date published: 2001-11-10
album: A Million Stars
  type: MusicAlbum
  date published: 2004-11-12
album: A Million Stars
  type: MusicAlbum
  date published: 2004-11-12
album: Camino
  type: MusicAlbum
  date published: 2009-03-31
album: Camino
  type: MusicAlbum
  date published: 2009-03-31
album: Camino
  type: MusicAlbum
  date published: 2009-03-31
album: Hymns and Hers
  type: MusicAlbum
  date published: 2009-11-03
album: Hymns and Hers
  type: MusicAlbum
  date published: 2009-11-03
album: Hymns and Hers
  type: MusicAlbum
  date published: 2009-11-03
album: Enthralled
  type: MusicAlbum
  date published: 2012-01-31
album: Celtic Devotion
  type: MusicAlbum
  date published: 2013-01-01
album: Celtic Escape
  type: MusicAlbum
  date published: 2013-01-01
album: Celtica
  type: MusicAlbum
  date published: 2013-11-07
album: Emerald Isle
  type: MusicAlbum
  date published: 2016-04-22
track: Caoineadh Mhuire (Mary's Lament)
  type: MusicRecording
  duration: PT4M24S
  duration ms: 264413
  explicit: false
  by artist: Oliver Schroer
  by artist: Teresa Doyle
  in album: Sacred Songs of Mary 2
    type: MusicAlbum
    date published: 2014-10-14
  isrc code: USAKS1400052
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
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    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USAKS1400052
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-30T18:23:33Z
  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
  subject of: OpenTimestamps Proof of Existence
    type: DigitalDocument
    encoding format: application/vnd.opentimestamps.ots
    description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x976e875aa9626fd54d1285118ecf27c726c6d7f193faba8acc841f1099f5279f. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USAKS1400052.
    date published: 2026-07-30T18:23:33Z
  audio: Caoineadh Mhuire (Mary's Lament)
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 143.272
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
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      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.223
    additional property: Energy
      type: PropertyValue
      value: 0.075
    additional property: Speechiness
      type: PropertyValue
      value: 0.037
    additional property: Acousticness
      type: PropertyValue
      value: 0.943
    additional property: Instrumentalness
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      value: 0
    additional property: Liveness
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    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.113
    additional property: Loudness (dB)
      type: PropertyValue
      value: -18.172
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major