Noa's Postcards
type: MusicGroup
popularity: 4
followers: 18
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x8e0b8b3afcace91fd9bc6ea1ffedbcc315693f8c41847fd54fd1dd12994dc693
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954623
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954623
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cc9adc38-8762-4e79-b372-1955ef301721.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/cc9adc38-8762-4e79-b372-1955ef301721.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/cc9adc38-8762-4e79-b372-1955ef301721
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T23:40:06Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x8e0b8b3afcace91fd9bc6ea1ffedbcc315693f8c41847fd54fd1dd12994dc693","name":"Noa's Postcards","registered_at":"2026-06-20T23:23:23Z","symbol":"NIM1747056","token_address":"0x82b3d5f929e1abba242f02fc8e6037f6851b67fe","type":"artist","uuid":"cc9adc38-8762-4e79-b372-1955ef301721"}
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 0x8e0b8b3afcace91fd9bc6ea1ffedbcc315693f8c41847fd54fd1dd12994dc693. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc9adc38-8762-4e79-b372-1955ef301721.json and https://artists.proofprofile.net/proofs/artist/cc9adc38-8762-4e79-b372-1955ef301721.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
  date published: 2026-06-20T23:40:06Z
  text: {"copyright_id":"0x8e0b8b3afcace91fd9bc6ea1ffedbcc315693f8c41847fd54fd1dd12994dc693","name":"Noa's Postcards","registered_at":"2026-06-20T23:23:23Z","symbol":"NIM1747056","token_address":"0x82b3d5f929e1abba242f02fc8e6037f6851b67fe","type":"artist","uuid":"cc9adc38-8762-4e79-b372-1955ef301721"}
album: Where Time Ends
  type: MusicAlbum
  date published: 2025-08-15
  track: Where Time Ends
    type: MusicRecording
    duration: PT2M14S
    duration ms: 134769
    explicit: false
    by artist: Noa's Postcards
    in album: Where Time Ends
      type: MusicAlbum
      date published: 2025-08-15
    isrc code: DE1QW2502191
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-04T08:35:59+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc61eb53473dd8c311b8f7b14cf54b0bf251deebca2dc7da078c843a92efc4c62
    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/DE1QW2502191
    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 0xc61eb53473dd8c311b8f7b14cf54b0bf251deebca2dc7da078c843a92efc4c62. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DE1QW2502191 — a six-check JSON result.
      date published: 2026-07-04T10:04:33Z
    audio: Where Time Ends
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 120.026
      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: 0.708
      additional property: Energy
        type: PropertyValue
        value: 0.124
      additional property: Speechiness
        type: PropertyValue
        value: 0.043
      additional property: Acousticness
        type: PropertyValue
        value: 0.905
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.901
      additional property: Liveness
        type: PropertyValue
        value: 0.108
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.093
      additional property: Loudness (dB)
        type: PropertyValue
        value: -15.543
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Miles Away
  type: MusicAlbum
  date published: 2025-08-29
album: Ocean Streets
  type: MusicAlbum
  date published: 2025-09-26