Cemento
type: MusicGroup
genre: cold wave
genre: darkwave
genre: deathrock
genre: post-punk
description: Cemento was an Argentine nightclub, used for rock concerts. It was opened in 1985, and it was closed in 2004. History Omar Chabán had a nightclub named "Café Einstein", which was closed several times
popularity: 6
followers: 1329
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x4ad8963f07b50dedb9e852ae4ea910781b23d241c75d5e6fcf78f5f65db7919b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953932
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953932
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f25c6e8-07d7-44b7-9141-5cf26f1ac258.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/1f25c6e8-07d7-44b7-9141-5cf26f1ac258.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/1f25c6e8-07d7-44b7-9141-5cf26f1ac258
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T11:10:43Z
additional property: OTSCanonicalRecord
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 0x4ad8963f07b50dedb9e852ae4ea910781b23d241c75d5e6fcf78f5f65db7919b. Chain 2 (Bitcoin): anchored in block 953932 (2026-06-16T11:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1f25c6e8-07d7-44b7-9141-5cf26f1ac258.json and https://artists.proofprofile.net/proofs/artist/1f25c6e8-07d7-44b7-9141-5cf26f1ac258.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T11:10:43Z
album: Cemento
  type: MusicAlbum
  date published: 2019-08-07
album: Killing Life
  type: MusicAlbum
  date published: 2021-06-30
  track: No Ambition
    type: MusicRecording
    duration: PT2M57S
    duration ms: 177081
    explicit: false
    by artist: Cemento
    in album: Killing Life
      type: MusicAlbum
      date published: 2021-06-30
    genre: cold wave
    genre: darkwave
    genre: deathrock
    genre: post-punk
    isrc code: QZ2YP2120902
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T15:51:16+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0df0c316e7d13a725b44ba0c600a7acb506da9a9860b0ec140471d2744362384
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958300
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958300
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ2YP2120902
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T16:14:30Z
    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 0x0df0c316e7d13a725b44ba0c600a7acb506da9a9860b0ec140471d2744362384. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ2YP2120902.
      date published: 2026-07-16T16:14:30Z
    audio: No Ambition
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 171.229
      additional property: Musical Key
        type: PropertyValue
        value: 7
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.184
      additional property: Energy
        type: PropertyValue
        value: 0.989
      additional property: Speechiness
        type: PropertyValue
        value: 0.072
      additional property: Acousticness
        type: PropertyValue
        value: 0
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.73
      additional property: Liveness
        type: PropertyValue
        value: 0.235
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.341
      additional property: Loudness (dB)
        type: PropertyValue
        value: -5.017
      additional property: Key Name
        type: PropertyValue
        value: G
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Weaponry
  type: MusicAlbum
  date published: 2022-02-06
album: Bitter Themes/Lords Day EP
  type: MusicAlbum
  date published: 2023-06-28
album: Better Days
  type: MusicAlbum
  date published: 2025-11-11