Semi Sphere
type: MusicGroup
popularity: 28
followers: 63
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9f054173473f40533524454fdcf99833e8ec01f73df0840d0652624e9c1c2fbb
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953407
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953407
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38cc111e-1d52-48e4-89ef-30e9bfbb9386.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/38cc111e-1d52-48e4-89ef-30e9bfbb9386.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/38cc111e-1d52-48e4-89ef-30e9bfbb9386
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-12T19:24:56Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9f054173473f40533524454fdcf99833e8ec01f73df0840d0652624e9c1c2fbb","name":"Semi Sphere","registered_at":"2026-06-11T16:56:05Z","symbol":"NIM0074383","token_address":"0xa7615596d6b92c847ec791630d210a6221257c43","type":"artist","uuid":"38cc111e-1d52-48e4-89ef-30e9bfbb9386"}
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 0x9f054173473f40533524454fdcf99833e8ec01f73df0840d0652624e9c1c2fbb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/38cc111e-1d52-48e4-89ef-30e9bfbb9386.json and https://artists.proofprofile.net/proofs/artist/38cc111e-1d52-48e4-89ef-30e9bfbb9386.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-12T19:24:56Z
  text: {"copyright_id":"0x9f054173473f40533524454fdcf99833e8ec01f73df0840d0652624e9c1c2fbb","name":"Semi Sphere","registered_at":"2026-06-11T16:56:05Z","symbol":"NIM0074383","token_address":"0xa7615596d6b92c847ec791630d210a6221257c43","type":"artist","uuid":"38cc111e-1d52-48e4-89ef-30e9bfbb9386"}
album: Trickle Down
  type: MusicAlbum
  date published: 2021-02-05
album: Showstopper
  type: MusicAlbum
  date published: 2021-11-04
album: Smokey Cloud Mountain
  type: MusicAlbum
  date published: 2022-07-31
album: Unravel
  type: MusicAlbum
  date published: 2023-07-12
album: Swaddled
  type: MusicAlbum
  date published: 2024-08-04
album: Beneath the Sleeping Forest
  type: MusicAlbum
  date published: 2024-10-24
album: Feign
  type: MusicAlbum
  date published: 2024-12-09
album: Superior One
  type: MusicAlbum
  date published: 2025-02-17
album: Colorful Morning
  type: MusicAlbum
  date published: 2025-04-21
album: Timeless Echo
  type: MusicAlbum
  date published: 2025-05-07
  track: Timeless Echo
    type: MusicRecording
    duration: PT2M38S
    duration ms: 158400
    explicit: false
    by artist: Semi Sphere
    in album: Timeless Echo
      type: MusicAlbum
      date published: 2025-05-07
    isrc code: QZAKB2476425
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-13T00:22:21+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xd30d9f9f0cee75015927d45c3b39c1c3508c518b59402995b34321e2b0fc465a
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 957788
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/957788
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZAKB2476425
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-13T02:37:37Z
    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 0xd30d9f9f0cee75015927d45c3b39c1c3508c518b59402995b34321e2b0fc465a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZAKB2476425.
      date published: 2026-07-13T02:37:37Z
    audio: Timeless Echo
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 180.849
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.094
      additional property: Energy
        type: PropertyValue
        value: 0.117
      additional property: Speechiness
        type: PropertyValue
        value: 0.049
      additional property: Acousticness
        type: PropertyValue
        value: 0.749
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.946
      additional property: Liveness
        type: PropertyValue
        value: 0.107
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.04
      additional property: Loudness (dB)
        type: PropertyValue
        value: -25.226
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Glass Horizons
  type: MusicAlbum
  date published: 2025-08-18