Jakob Dreyer
type: MusicGroup
genre: jazz
description: Johan Jakob Rambach Dreyer (29 March 1861 – 15 June 1952) was a Norwegian book printer. He was born in Stavanger as a son of book printer Paul Terchelsen Dreyer (1819–1908) and Ingeborg Marie Hellern
popularity: 24
followers: 373
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xfc487dab14506efc2c24cccdfea8e59376f2e4620bc494b3842d618847063f7e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a678950-3431-4835-99aa-190d2ab523ed.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9a678950-3431-4835-99aa-190d2ab523ed.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9a678950-3431-4835-99aa-190d2ab523ed
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xfc487dab14506efc2c24cccdfea8e59376f2e4620bc494b3842d618847063f7e","name":"Jakob Dreyer","registered_at":"2026-06-12T05:26:36Z","symbol":"NIM0200242","token_address":"0xe321d6c8b1e96597532e64917b699154dd05bbbc","type":"artist","uuid":"9a678950-3431-4835-99aa-190d2ab523ed"}
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 0xfc487dab14506efc2c24cccdfea8e59376f2e4620bc494b3842d618847063f7e. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9a678950-3431-4835-99aa-190d2ab523ed.json and https://artists.proofprofile.net/proofs/artist/9a678950-3431-4835-99aa-190d2ab523ed.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0xfc487dab14506efc2c24cccdfea8e59376f2e4620bc494b3842d618847063f7e","name":"Jakob Dreyer","registered_at":"2026-06-12T05:26:36Z","symbol":"NIM0200242","token_address":"0xe321d6c8b1e96597532e64917b699154dd05bbbc","type":"artist","uuid":"9a678950-3431-4835-99aa-190d2ab523ed"}
album: Songs, Hymns and Ballads, Vol. 1
  type: MusicAlbum
  date published: 2022-09-16
album: Ypsilon
  type: MusicAlbum
  date published: 2023-02-10
album: Twenty Twenty
  type: MusicAlbum
  date published: 2023-03-10
album: Songs, Hymns and Ballads, Vol. 2
  type: MusicAlbum
  date published: 2023-04-14
album: Fight or Flight
  type: MusicAlbum
  date published: 2025-09-26
  track: Fight or Flight
    type: MusicRecording
    duration: PT5M45S
    duration ms: 345533
    explicit: false
    by artist: Jakob Dreyer
    in album: Fight or Flight
      type: MusicAlbum
      date published: 2025-09-26
    genre: jazz
    isrc code: ES7712571709
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-22T07:23:45+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x01b9d7a7100ea3a680def3be0a37fae814902a7430fa0a91beceeffbdad72b13
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959114
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959114
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7712571709
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-22T08:41:42Z
    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 0x01b9d7a7100ea3a680def3be0a37fae814902a7430fa0a91beceeffbdad72b13. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7712571709 — a six-check JSON result.
      date published: 2026-07-22T08:41:42Z
    audio: Fight or Flight
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 143.338
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.446
      additional property: Energy
        type: PropertyValue
        value: 0.568
      additional property: Speechiness
        type: PropertyValue
        value: 0.053
      additional property: Acousticness
        type: PropertyValue
        value: 0.618
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.72
      additional property: Liveness
        type: PropertyValue
        value: 0.19
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.448
      additional property: Loudness (dB)
        type: PropertyValue
        value: -9.694
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: Downtime
  type: MusicAlbum
  date published: 2025-10-10
album: Follower
  type: MusicAlbum
  date published: 2025-10-31
album: Roots And Things
  type: MusicAlbum
  date published: 2025-11-14