City At Sea
type: MusicGroup
popularity: 2
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xee9a8306c55f345f9e8b7d56d0b01f7c0e85418c1221c971a41c425ddae1657b
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3d3ef878-2adb-4f88-bc7c-6fcb2019ec26.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/3d3ef878-2adb-4f88-bc7c-6fcb2019ec26.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/3d3ef878-2adb-4f88-bc7c-6fcb2019ec26
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xee9a8306c55f345f9e8b7d56d0b01f7c0e85418c1221c971a41c425ddae1657b","name":"City At Sea","registered_at":"2026-06-16T10:58:18Z","symbol":"NIM1030569","token_address":"0x158e16f54c1385d672e4bd77224090c84130298f","type":"artist","uuid":"3d3ef878-2adb-4f88-bc7c-6fcb2019ec26"}
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 0xee9a8306c55f345f9e8b7d56d0b01f7c0e85418c1221c971a41c425ddae1657b. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3d3ef878-2adb-4f88-bc7c-6fcb2019ec26.json and https://artists.proofprofile.net/proofs/artist/3d3ef878-2adb-4f88-bc7c-6fcb2019ec26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0xee9a8306c55f345f9e8b7d56d0b01f7c0e85418c1221c971a41c425ddae1657b","name":"City At Sea","registered_at":"2026-06-16T10:58:18Z","symbol":"NIM1030569","token_address":"0x158e16f54c1385d672e4bd77224090c84130298f","type":"artist","uuid":"3d3ef878-2adb-4f88-bc7c-6fcb2019ec26"}
album: City at Sea
  type: MusicAlbum
  date published: 2022-07-01
album: City at Sea
  type: MusicAlbum
  date published: 2022-07-01
album: Afterthought
  type: MusicAlbum
  date published: 2022-07-08
album: Afterthought
  type: MusicAlbum
  date published: 2022-07-08
album: Songs from the Waiting Room
  type: MusicAlbum
  date published: 2022-08-19
album: Songs from the Waiting Room
  type: MusicAlbum
  date published: 2022-08-19
album: Things People Say
  type: MusicAlbum
  date published: 2022-08-19
album: Things People Say
  type: MusicAlbum
  date published: 2022-08-19
album: Letters
  type: MusicAlbum
  date published: 2023-05-12
album: Don't Wait for Me
  type: MusicAlbum
  date published: 2023-05-22
album: A View From The Airport
  type: MusicAlbum
  date published: 2024-03-15
album: A View from the Airport
  type: MusicAlbum
  date published: 2024-03-15
album: Bloom
  type: MusicAlbum
  date published: 2024-10-25
album: In the Harbor
  type: MusicAlbum
  date published: 2025-05-02
  track: In the Harbor
    type: MusicRecording
    duration: PT2M17S
    duration ms: 137682
    explicit: false
    by artist: City At Sea
    in album: In the Harbor
      type: MusicAlbum
      date published: 2025-05-02
    isrc code: QZMZ92559594
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T07:41:20+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xce8992e38289f7048456814c11eab467b1d8055d8a57f576e4488168e1d46454
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956656
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956656
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZMZ92559594
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-04T14:03:39Z
    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 0xce8992e38289f7048456814c11eab467b1d8055d8a57f576e4488168e1d46454. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZMZ92559594.
      date published: 2026-07-04T14:03:39Z
    audio: In the Harbor
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 68.833
      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: 0.417
      additional property: Energy
        type: PropertyValue
        value: 0.005
      additional property: Speechiness
        type: PropertyValue
        value: 0.055
      additional property: Acousticness
        type: PropertyValue
        value: 0.994
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.956
      additional property: Liveness
        type: PropertyValue
        value: 0.091
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.364
      additional property: Loudness (dB)
        type: PropertyValue
        value: -30.248
      additional property: Key Name
        type: PropertyValue
        value: D
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: 1977
  type: MusicAlbum
  date published: 2025-05-09
album: Last Chance for a Slow Dance
  type: MusicAlbum
  date published: 2025-05-14
album: Travelers
  type: MusicAlbum
  date published: 2025-05-23