Sèmi
type: MusicGroup
popularity: 9
followers: 162
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xb68286c4647395037e4b9188a631dd7bf0f87f4e6120b0fcbaa4100c4adbd862
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/4d40ce86-bc59-44cf-9941-b3e03f974303.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4d40ce86-bc59-44cf-9941-b3e03f974303.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4d40ce86-bc59-44cf-9941-b3e03f974303
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xb68286c4647395037e4b9188a631dd7bf0f87f4e6120b0fcbaa4100c4adbd862","name":"Sèmi","registered_at":"2026-06-16T16:34:00Z","symbol":"NIM1110650","token_address":"0xe5439ba5879d2ff11e2d8c9f154a812253af5214","type":"artist","uuid":"4d40ce86-bc59-44cf-9941-b3e03f974303"}
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 0xb68286c4647395037e4b9188a631dd7bf0f87f4e6120b0fcbaa4100c4adbd862. 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/4d40ce86-bc59-44cf-9941-b3e03f974303.json and https://artists.proofprofile.net/proofs/artist/4d40ce86-bc59-44cf-9941-b3e03f974303.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:11:48Z
  text: {"copyright_id":"0xb68286c4647395037e4b9188a631dd7bf0f87f4e6120b0fcbaa4100c4adbd862","name":"Sèmi","registered_at":"2026-06-16T16:34:00Z","symbol":"NIM1110650","token_address":"0xe5439ba5879d2ff11e2d8c9f154a812253af5214","type":"artist","uuid":"4d40ce86-bc59-44cf-9941-b3e03f974303"}
album: Nulla cambia
  type: MusicAlbum
  date published: 2024-04-24
album: Direzione Nizza
  type: MusicAlbum
  date published: 2024-07-01
album: MARCHIO IL TIMBRO
  type: MusicAlbum
  date published: 2024-11-15
album: COBRA
  type: MusicAlbum
  date published: 2025-02-18
album: SPOT
  type: MusicAlbum
  date published: 2025-05-28
  track: SPOT
    type: MusicRecording
    duration: PT1M44S
    duration ms: 104242
    explicit: true
    by artist: Sèmi
    in album: SPOT
      type: MusicAlbum
      date published: 2025-05-28
    isrc code: QZRP52594397
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-15T12:10:58+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x0a1225411db7a543c1ba353296be5891d7e70c04ab85dd17810b8a747df88afd
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958157
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958157
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZRP52594397
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-15T15:11:42Z
    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 0x0a1225411db7a543c1ba353296be5891d7e70c04ab85dd17810b8a747df88afd. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:42Z), 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/QZRP52594397.
      date published: 2026-07-15T15:11:42Z
    audio: SPOT
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 99.024
      additional property: Musical Key
        type: PropertyValue
        value: 6
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 3
      additional property: Danceability
        type: PropertyValue
        value: 0.746
      additional property: Energy
        type: PropertyValue
        value: 0.754
      additional property: Speechiness
        type: PropertyValue
        value: 0.317
      additional property: Acousticness
        type: PropertyValue
        value: 0.081
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.19
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.654
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.381
      additional property: Key Name
        type: PropertyValue
        value: F#
      additional property: Mode Name
        type: PropertyValue
        value: Minor
album: CRACCO
  type: MusicAlbum
  date published: 2025-09-19
  track: CRACCO
    type: MusicRecording
    duration: PT2M12S
    duration ms: 132419
    explicit: true
    by artist: Sèmi
    in album: CRACCO
      type: MusicAlbum
      date published: 2025-09-19
    isrc code: QT3EY2504917
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-20T17:41:52+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0xb131b5356a7c53184d6346323dd56a7500547af3be0cf5a7cdb971e0997b7da7
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 958917
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/958917
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QT3EY2504917
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-20T17:53:56Z
    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 0xb131b5356a7c53184d6346323dd56a7500547af3be0cf5a7cdb971e0997b7da7. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QT3EY2504917.
      date published: 2026-07-20T17:53:56Z
    audio: CRACCO
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 116.108
      additional property: Musical Key
        type: PropertyValue
        value: 8
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.794
      additional property: Energy
        type: PropertyValue
        value: 0.764
      additional property: Speechiness
        type: PropertyValue
        value: 0.134
      additional property: Acousticness
      additional property: Instrumentalness
      additional property: Liveness
      additional property: Valence (Positivity)
      additional property: Loudness (dB)
      additional property: Key Name
      additional property: Mode Name
album: Skinny Freestyle

Acousticness
type: PropertyValue
value: 0.171

Instrumentalness
type: PropertyValue
value: 0

Liveness
type: PropertyValue
value: 0.105

Valence (Positivity)
type: PropertyValue
value: 0.548

Loudness (dB)
type: PropertyValue
value: -2

Key Name
type: PropertyValue
value: Ab

Mode Name
type: PropertyValue
value: Major

Skinny Freestyle
type: MusicAlbum
date published: 2025-10-27