Iron Curtain
type: MusicGroup
description: thumb|The Iron Curtain, in black The black dot represents the Berlin Wall around West Berlin. Locations such as Yugoslavia and the Soviet occupation zone in Austria were initially considered to be be
popularity: 3
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x0c69ef1c1e7bcf2bd5bc32800ca5828435d616d79c62e237492d1890633c6a4c
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/893f261b-be10-4f5a-b6a7-0f8a9b85412a.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/893f261b-be10-4f5a-b6a7-0f8a9b85412a.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/893f261b-be10-4f5a-b6a7-0f8a9b85412a
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-19T03:22:39Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x0c69ef1c1e7bcf2bd5bc32800ca5828435d616d79c62e237492d1890633c6a4c","name":"Iron Curtain","registered_at":"2026-06-17T13:32:58Z","symbol":"NIM1410885","token_address":"0xd113c7bd3919eac8388ad900167215e6ba8b020d","type":"artist","uuid":"893f261b-be10-4f5a-b6a7-0f8a9b85412a"}
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 0x0c69ef1c1e7bcf2bd5bc32800ca5828435d616d79c62e237492d1890633c6a4c. 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/893f261b-be10-4f5a-b6a7-0f8a9b85412a.json and https://artists.proofprofile.net/proofs/artist/893f261b-be10-4f5a-b6a7-0f8a9b85412a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-19T03:22:39Z
  text: {"copyright_id":"0x0c69ef1c1e7bcf2bd5bc32800ca5828435d616d79c62e237492d1890633c6a4c","name":"Iron Curtain","registered_at":"2026-06-17T13:32:58Z","symbol":"NIM1410885","token_address":"0xd113c7bd3919eac8388ad900167215e6ba8b020d","type":"artist","uuid":"893f261b-be10-4f5a-b6a7-0f8a9b85412a"}
album: Wannabe
  type: MusicAlbum
  date published: 2025-04-11
  track: Wannabe
    type: MusicRecording
    duration: PT2M19S
    duration ms: 139125
    explicit: false
    by artist: Iron Curtain
    in album: Wannabe
      type: MusicAlbum
      date published: 2025-04-11
    isrc code: USDY42550672
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-16T04:18:46+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x730eeb7d6c4b46382993f6e385e302ff1232f0c4aa9744429c6652ca48338cca
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958238
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958238
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USDY42550672
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-16T04:30:31Z
    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 0x730eeb7d6c4b46382993f6e385e302ff1232f0c4aa9744429c6652ca48338cca. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/USDY42550672.
      date published: 2026-07-16T04:30:31Z
    audio: Wannabe
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 136.959
      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: 0.548
      additional property: Energy
        type: PropertyValue
        value: 0.531
      additional property: Speechiness
        type: PropertyValue
        value: 0.142
      additional property: Acousticness
        type: PropertyValue
        value: 0.042
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.102
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.639
      additional property: Loudness (dB)
        type: PropertyValue
        value: -14.024
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: I'm Not Gonna Stay
  type: MusicAlbum
  date published: 2025-08-09
  track: I'm Not Gonna Stay
    type: MusicRecording
    duration: PT2M45S
    duration ms: 165299
    explicit: false
    by artist: Iron Curtain
    in album: I'm Not Gonna Stay
      type: MusicAlbum
      date published: 2025-08-09
    isrc code: USL4Q2510460
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T21:39:10+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xfbabaa07831e00974f3d54bf87bfa9950af8e3d6c1e852c5edb4c918eefffc60
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956634
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956634
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USL4Q2510460
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T10:04:33Z
    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 0xfbabaa07831e00974f3d54bf87bfa9950af8e3d6c1e852c5edb4c918eefffc60. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USL4Q2510460.
      date published: 2026-07-04T10:04:33Z
    audio: I'm Not Gonna Stay
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 144.907
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.574
      additional property: Energy
        type: PropertyValue
        value: 0.603
      additional property: Speechiness
        type: PropertyValue
        value: 0.039
      additional property: Acousticness
        type: PropertyValue
        value: 0.025
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.583
      additional property: Liveness
        type: PropertyValue
        value: 0.315
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name

Valence (Positivity)
type: PropertyValue
value: 0.648

Loudness (dB)
type: PropertyValue
value: -11.612

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor