Tartu Academic Male Choir
type: MusicGroup
genre: choral
popularity: 5
followers: 85
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xa71e04f0478fc6740953f6b8356f3fb244aea086feb2a22389b1e62f344a3f45
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954342
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954342
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8625187a-f48b-4560-a57d-64c8f405739d.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8625187a-f48b-4560-a57d-64c8f405739d.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8625187a-f48b-4560-a57d-64c8f405739d
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xa71e04f0478fc6740953f6b8356f3fb244aea086feb2a22389b1e62f344a3f45","name":"Tartu Academic Male Choir","registered_at":"2026-06-17T12:49:28Z","symbol":"NIM1400512","token_address":"0xa9b2df171abdd6ec3fd536f328a4f92384258f38","type":"artist","uuid":"8625187a-f48b-4560-a57d-64c8f405739d"}
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e04f0478fc6740953f6b8356f3fb244aea086feb2a22389b1e62f344a3f45. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8625187a-f48b-4560-a57d-64c8f405739d.json and https://artists.proofprofile.net/proofs/artist/8625187a-f48b-4560-a57d-64c8f405739d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xa71e04f0478fc6740953f6b8356f3fb244aea086feb2a22389b1e62f344a3f45","name":"Tartu Academic Male Choir","registered_at":"2026-06-17T12:49:28Z","symbol":"NIM1400512","token_address":"0xa9b2df171abdd6ec3fd536f328a4f92384258f38","type":"artist","uuid":"8625187a-f48b-4560-a57d-64c8f405739d"}
album: Tartu Akadeemiline Meeskoor
  type: MusicAlbum
  date published: 1983-09-01
album: Kolm kella
  type: MusicAlbum
  date published: 1995-05-01
album: Mis kaunim veel maailmas...
  type: MusicAlbum
  date published: 2000-03-01
album: Koorilaulud
  type: MusicAlbum
  date published: 2006-09-01
album: Eesti laul
  type: MusicAlbum
  date published: 2008-03-01
album: Eesti Rahvusülikool 100
  type: MusicAlbum
  date published: 2019-12-07
album: Eesti Lauljate Liit 100
  type: MusicAlbum
  date published: 2021-10-24
  track: Leelo (Mis need ohjad meida hoidvad)
    type: MusicRecording
    duration: PT2M32S
    duration ms: 152028
    explicit: false
    by artist: Tartu Academic Male Choir
    in album: Eesti Lauljate Liit 100
      type: MusicAlbum
      date published: 2021-10-24
    genre: choral
    isrc code: QZNWT2202690
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T21:24:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x1feec58d76a5a2679b27f3e79fa86ea0445039ede7322c5cd321b8f68ed88590
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958935
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958935
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZNWT2202690
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T22:08:19Z
    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
    subject of: OpenTimestamps Proof of Existence
      type: DigitalDocument
      encoding format: application/vnd.opentimestamps.ots
      description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1feec58d76a5a2679b27f3e79fa86ea0445039ede7322c5cd321b8f68ed88590. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWT2202690.
      date published: 2026-07-20T22:08:19Z
    audio: Leelo (Mis need ohjad meida hoidvad)
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 87.196
      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: 0.183
      additional property: Energy
        type: PropertyValue
        value: 0.143
      additional property: Speechiness
        type: PropertyValue
        value: 0.032
      additional property: Acousticness
        type: PropertyValue
        value: 0.993
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.118
      additional property: Liveness
        type: PropertyValue
        value: 0.114
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.086
      additional property: Loudness (dB)
        type: PropertyValue
        value: -19.167
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Iloilman
  type: MusicAlbum
  date published: 2025-06-01