Tallinna Tehnikaülikooli Kammerkoor
type: MusicGroup
popularity: 4
followers: 52
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xd24ff8b45ebabebcf239172eee3e93b3c55111d56ac03b13d9a005ca611a1eae
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/8b5d5a27-b639-409c-8e5d-825d496e8898.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8b5d5a27-b639-409c-8e5d-825d496e8898.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8b5d5a27-b639-409c-8e5d-825d496e8898
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xd24ff8b45ebabebcf239172eee3e93b3c55111d56ac03b13d9a005ca611a1eae","name":"Tallinna Tehnikaülikooli Kammerkoor","registered_at":"2026-06-17T14:14:47Z","symbol":"NIM1420869","token_address":"0x8f47386cfb335b791216b5253b0752ff7e131654","type":"artist","uuid":"8b5d5a27-b639-409c-8e5d-825d496e8898"}
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 0xd24ff8b45ebabebcf239172eee3e93b3c55111d56ac03b13d9a005ca611a1eae. 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/8b5d5a27-b639-409c-8e5d-825d496e8898.json and https://artists.proofprofile.net/proofs/artist/8b5d5a27-b639-409c-8e5d-825d496e8898.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0xd24ff8b45ebabebcf239172eee3e93b3c55111d56ac03b13d9a005ca611a1eae","name":"Tallinna Tehnikaülikooli Kammerkoor","registered_at":"2026-06-17T14:14:47Z","symbol":"NIM1420869","token_address":"0x8f47386cfb335b791216b5253b0752ff7e131654","type":"artist","uuid":"8b5d5a27-b639-409c-8e5d-825d496e8898"}
album: Elu põhjataeva all
  type: MusicAlbum
  date published: 2006
album: Ajatu sõprus
  type: MusicAlbum
  date published: 2017-02-15
  track: Ma tahan olla öö
    type: MusicRecording
    duration: PT3M9S
    duration ms: 189701
    explicit: false
    by artist: Tallinna Tehnikaülikooli Kammerkoor
    in album: Ajatu sõprus
      type: MusicAlbum
      date published: 2017-02-15
    isrc code: GBSMU3376053
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T18:12:28+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x7b9af6cc349d217a3c7cdec90f975cb8e21ee1b2f163fb8e87bc275697a7650c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958319
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958319
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBSMU3376053
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T20:12:32Z
    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 0x7b9af6cc349d217a3c7cdec90f975cb8e21ee1b2f163fb8e87bc275697a7650c. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBSMU3376053.
      date published: 2026-07-16T20:12:32Z
    audio: Ma tahan olla öö
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 170.837
      additional property: Musical Key
        type: PropertyValue
        value: 2
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.2
      additional property: Energy
        type: PropertyValue
        value: 0.12
      additional property: Speechiness
        type: PropertyValue
        value: 0.041
      additional property: Acousticness
        type: PropertyValue
        value: 0.991
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.022
      additional property: Liveness
        type: PropertyValue
        value: 0.143
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.127
      additional property: Loudness (dB)
        type: PropertyValue
        value: -20.246
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major