Marstal Småborgerlige Sangforening
type: MusicGroup
genre: dansktop
genre: sea shanties
popularity: 7
followers: 265
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb02645f40d02638c02b8f6a36a6f27ace85b4c75ee90d3640c9a09cb1032069c
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/74321f09-f959-44ed-921a-2842c6ab61cd.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/74321f09-f959-44ed-921a-2842c6ab61cd.json
additional property: OTSVerificationAPI
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  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/74321f09-f959-44ed-921a-2842c6ab61cd
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb02645f40d02638c02b8f6a36a6f27ace85b4c75ee90d3640c9a09cb1032069c","name":"Marstal Småborgerlige Sangforening","registered_at":"2026-06-17T06:07:37Z","symbol":"NIM1304787","token_address":"0x7b603da6d0f004c17c34fbb29a2e02a9f016ffb4","type":"artist","uuid":"74321f09-f959-44ed-921a-2842c6ab61cd"}
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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02645f40d02638c02b8f6a36a6f27ace85b4c75ee90d3640c9a09cb1032069c. 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/74321f09-f959-44ed-921a-2842c6ab61cd.json and https://artists.proofprofile.net/proofs/artist/74321f09-f959-44ed-921a-2842c6ab61cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb02645f40d02638c02b8f6a36a6f27ace85b4c75ee90d3640c9a09cb1032069c","name":"Marstal Småborgerlige Sangforening","registered_at":"2026-06-17T06:07:37Z","symbol":"NIM1304787","token_address":"0x7b603da6d0f004c17c34fbb29a2e02a9f016ffb4","type":"artist","uuid":"74321f09-f959-44ed-921a-2842c6ab61cd"}
album: Marstal Småborgerlige Sangforening
  type: MusicAlbum
  date published: 1997-04-01
album: Marstal Småborgerlige Sangforening
  type: MusicAlbum
  date published: 1997-05-05
album: Tonian
  type: MusicAlbum
  date published: 1999-06-01
album: Tonian
  type: MusicAlbum
  date published: 1999-06-04
album: Så' Det Hjem Boys!
  type: MusicAlbum
  date published: 2006-05-01
album: Så' Det Hjem Boys
  type: MusicAlbum
  date published: 2006-05-01
  track: S/S Martha
    type: MusicRecording
    duration: PT1M42S
    duration ms: 102413
    explicit: false
    by artist: Marstal Småborgerlige Sangforening
    in album: Så' Det Hjem Boys
      type: MusicAlbum
      date published: 2006-05-01
    genre: dansktop
    genre: sea shanties
    isrc code: QMFME1938942
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
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      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xe049c4e1f2218509d3d342eefdc8bec93ab94622211ec99a27565d231d1c9e2a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
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      value: 957771
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957771
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1938942
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-12T23:27:28Z
    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 0xe049c4e1f2218509d3d342eefdc8bec93ab94622211ec99a27565d231d1c9e2a. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QMFME1938942.
      date published: 2026-07-12T23:27:28Z
    audio: S/S Martha
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 147.5
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.494
      additional property: Energy
        type: PropertyValue
        value: 0.115
      additional property: Speechiness
        type: PropertyValue
        value: 0.035
      additional property: Acousticness
        type: PropertyValue
        value: 0.991
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.373
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.936
      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.9
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major