Gemma
type: MusicGroup
description: Gemma or GEMMA may refer to: People and fictional characters Gemma (given name), including a list of people and fictional characters with the name Gemma (surname), including a list of people with t
popularity: 13
followers: 87
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x58899939888f24aabfc5c500cdc02f1a23c63abc8d61957859ed2067ea2d3c7e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953727
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953727
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8f66a7fa-6a1b-424c-bd89-7200cb0bd8ca.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8f66a7fa-6a1b-424c-bd89-7200cb0bd8ca.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8f66a7fa-6a1b-424c-bd89-7200cb0bd8ca
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T02:33:01Z
additional property: OTSCanonicalRecord
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 0x58899939888f24aabfc5c500cdc02f1a23c63abc8d61957859ed2067ea2d3c7e. Chain 2 (Bitcoin): anchored in block 953727 (2026-06-15T02:33:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f66a7fa-6a1b-424c-bd89-7200cb0bd8ca.json and https://artists.proofprofile.net/proofs/artist/8f66a7fa-6a1b-424c-bd89-7200cb0bd8ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T02:33:01Z
album: Gemma X
  type: MusicAlbum
  date published: 2023-07-30
album: Amarsi tra 40 anni
  type: MusicAlbum
  date published: 2023-09-08
album: Diverso da te
  type: MusicAlbum
  date published: 2023-12-10
album: UTOPIA
  type: MusicAlbum
  date published: 2024-03-01
album: ARIA
  type: MusicAlbum
  date published: 2024-03-10
album: DIO
  type: MusicAlbum
  date published: 2024-03-29
album: Ogni momento che passa
  type: MusicAlbum
  date published: 2024-11-01
album: Ogni momento che passa
  type: MusicAlbum
  date published: 2024-11-01
album: 12 tocchi
  type: MusicAlbum
  date published: 2025-01-17
album: Le linee delle mani
  type: MusicAlbum
  date published: 2025-02-21
album: Le linee delle mani
  type: MusicAlbum
  date published: 2025-02-21
album: Vivere al contrario
  type: MusicAlbum
  date published: 2025-05-23
album: Per essere come sei
  type: MusicAlbum
  date published: 2025-07-04
album: Soli
  type: MusicAlbum
  date published: 2025-10-31
  track: Soli
    type: MusicRecording
    duration: PT3M23S
    duration ms: 203898
    explicit: false
    by artist: Gemma
    in album: Soli
      type: MusicAlbum
      date published: 2025-10-31
    isrc code: ITJAH2500066
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-03T22:04:36+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x9ba1b2cd19fa1289988d75f9277e9b0b392d5bb7dc537fdccba9eeea12fb1055
    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/ITJAH2500066
    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 0x9ba1b2cd19fa1289988d75f9277e9b0b392d5bb7dc537fdccba9eeea12fb1055. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITJAH2500066.
      date published: 2026-07-04T10:04:33Z
    audio: Soli
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 118.046
      additional property: Musical Key
        type: PropertyValue
        value: 0
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.617
      additional property: Energy
        type: PropertyValue
        value: 0.765
      additional property: Speechiness
        type: PropertyValue
        value: 0.048
      additional property: Acousticness
        type: PropertyValue
        value: 0.078
      additional property: Instrumentalness
        type: PropertyValue
        value: 0
      additional property: Liveness
        type: PropertyValue
        value: 0.377
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.712
      additional property: Loudness (dB)
        type: PropertyValue
        value: -4.753
      additional property: Key Name
        type: PropertyValue
        value: C
      additional property: Mode Name
        type: PropertyValue
        value: Major