Anton Engdahl
type: MusicGroup
popularity: 4
followers: 35
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x9ace00da522d426e20181b96ff5417aeed47c2416eee8654808b632ee0d897f9
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954076
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954076
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7afbec22-de8a-4a38-8d2e-0e1b929e1dcb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/7afbec22-de8a-4a38-8d2e-0e1b929e1dcb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/7afbec22-de8a-4a38-8d2e-0e1b929e1dcb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T09:28:47Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x9ace00da522d426e20181b96ff5417aeed47c2416eee8654808b632ee0d897f9","name":"Anton Engdahl","registered_at":"2026-06-17T08:23:13Z","symbol":"NIM1337105","token_address":"0xf7995b8c28a792d115ec2dbd8f003fbeb3ba01ab","type":"artist","uuid":"7afbec22-de8a-4a38-8d2e-0e1b929e1dcb"}
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 0x9ace00da522d426e20181b96ff5417aeed47c2416eee8654808b632ee0d897f9. Chain 2 (Bitcoin): anchored in block 954076 (2026-06-17T09:28:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7afbec22-de8a-4a38-8d2e-0e1b929e1dcb.json and https://artists.proofprofile.net/proofs/artist/7afbec22-de8a-4a38-8d2e-0e1b929e1dcb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T09:28:47Z
  text: {"copyright_id":"0x9ace00da522d426e20181b96ff5417aeed47c2416eee8654808b632ee0d897f9","name":"Anton Engdahl","registered_at":"2026-06-17T08:23:13Z","symbol":"NIM1337105","token_address":"0xf7995b8c28a792d115ec2dbd8f003fbeb3ba01ab","type":"artist","uuid":"7afbec22-de8a-4a38-8d2e-0e1b929e1dcb"}
album: Very Classic Emo Bands
  type: MusicAlbum
  date published: 2025-01-15
album: Tell Harry I Didn't Cry
  type: MusicAlbum
  date published: 2025-02-19
  track: Tell Harry I Didn't Cry
    type: MusicRecording
    duration: PT3M54S
    duration ms: 234750
    explicit: false
    by artist: Anton Engdahl
    in album: Tell Harry I Didn't Cry
      type: MusicAlbum
      date published: 2025-02-19
    isrc code: SE7PL2500002
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-19T13:59:56+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xc1301dc98991be9f03c39f405e6cbbe9f943641b79ab51e57241ed6258e6ca32
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958746
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958746
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/SE7PL2500002
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-19T15:36:35Z
    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 0xc1301dc98991be9f03c39f405e6cbbe9f943641b79ab51e57241ed6258e6ca32. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SE7PL2500002.
      date published: 2026-07-19T15:36:35Z
    audio: Tell Harry I Didn't Cry
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 64.567
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.115
      additional property: Energy
        type: PropertyValue
        value: 0.303
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.644
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.88
      additional property: Liveness
        type: PropertyValue
        value: 0.112
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.087
      additional property: Loudness (dB)
        type: PropertyValue
        value: -17.379
      additional property: Key Name
        type: PropertyValue
        value: Ab
      additional property: Mode Name
        type: PropertyValue
        value: Major
album: Not Born Sad
  type: MusicAlbum
  date published: 2025-04-02
album: Share Houses
  type: MusicAlbum
  date published: 2025-06-25
album: Done a Number on Hope
  type: MusicAlbum
  date published: 2025-09-24