City of Ships
type: MusicGroup
genre: post-rock
genre: sludge metal
genre: space rock
popularity: 2
followers: 1289
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x33ae1a388d2d67ce7b4e758d48c512218400728015ded09988224a5b0a0d35ba
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/6434cec8-8220-443e-a558-8a8dc5d3f26f.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/6434cec8-8220-443e-a558-8a8dc5d3f26f.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/6434cec8-8220-443e-a558-8a8dc5d3f26f
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x33ae1a388d2d67ce7b4e758d48c512218400728015ded09988224a5b0a0d35ba","name":"City of Ships","registered_at":"2026-06-17T00:56:18Z","symbol":"NIM1230482","token_address":"0x765d2a786393d95faa795bef170533ab0b99c82b","type":"artist","uuid":"6434cec8-8220-443e-a558-8a8dc5d3f26f"}
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 0x33ae1a388d2d67ce7b4e758d48c512218400728015ded09988224a5b0a0d35ba. 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/6434cec8-8220-443e-a558-8a8dc5d3f26f.json and https://artists.proofprofile.net/proofs/artist/6434cec8-8220-443e-a558-8a8dc5d3f26f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0x33ae1a388d2d67ce7b4e758d48c512218400728015ded09988224a5b0a0d35ba","name":"City of Ships","registered_at":"2026-06-17T00:56:18Z","symbol":"NIM1230482","token_address":"0x765d2a786393d95faa795bef170533ab0b99c82b","type":"artist","uuid":"6434cec8-8220-443e-a558-8a8dc5d3f26f"}
album: Live Free or Don't
  type: MusicAlbum
  date published: 2007-01-01
album: Minor World
  type: MusicAlbum
  date published: 2011-07-19
album: City of Ships / Rosetta
  type: MusicAlbum
  date published: 2012-08-11
album: Ultraluminal
  type: MusicAlbum
  date published: 2015-03-20
track: I Hate It Too
  type: MusicRecording
  duration: PT6M14S
  duration ms: 374133
  explicit: false
  by artist: City of Ships
  in album: Songs of Farewell and Departure : A Tribute to HUM
    type: MusicAlbum
    date published: 2011-09-02
  isrc code: US4Z41100010
  additional property: CopyrightID
  additional property: CopyrightStatus
    type: PropertyValue
    value: registered
  additional property: CopyrightRegisteredAt
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    value: 2026-07-31T05:42:20+00:00
  additional property: CopyrightChainExplorerURL
    type: PropertyValue
    value: https://explorer.copyrightchains.com/tx/0xc6d739468282bbda07c20353d19ab687f6d44b8670c5cd3941fd7e67410c6358
  additional property: OTSHash
  additional property: OTSBitcoinBlock
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    value: 960355
  additional property: OTSBitcoinBlockVerifyURL
    type: PropertyValue
    value: https://blockstream.info/api/block-height/960355
  additional property: OTSVerificationAPI
    type: PropertyValue
    value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/US4Z41100010
  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-31T05:49:18Z
  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 0xc6d739468282bbda07c20353d19ab687f6d44b8670c5cd3941fd7e67410c6358. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/US4Z41100010.
    date published: 2026-07-31T05:49:18Z
  audio: I Hate It Too
    type: AudioObject
    additional property: Tempo (BPM)
      type: PropertyValue
      value: 110.465
    additional property: Musical Key
      type: PropertyValue
      value: 0
    additional property: Mode (Major/Minor)
      type: PropertyValue
      value: 1
    additional property: Time Signature
      type: PropertyValue
      value: 5
    additional property: Danceability
      type: PropertyValue
      value: 0.242
    additional property: Energy
      type: PropertyValue
      value: 0.67
    additional property: Speechiness
      type: PropertyValue
      value: 0.08
    additional property: Acousticness
      type: PropertyValue
      value: 0.024
    additional property: Instrumentalness
      type: PropertyValue
      value: 0.068
    additional property: Liveness
      type: PropertyValue
      value: 0.067
    additional property: Valence (Positivity)
      type: PropertyValue
      value: 0.4
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.215
    additional property: Key Name
      type: PropertyValue
      value: C
    additional property: Mode Name
      type: PropertyValue
      value: Major