Serra
type: MusicGroup
description: Serra (Latin for "saw") may refer to: People and fictional characters Serra (surname), a list of people and fictional characters Serra (given name), a list of people and fictional characters Serra
popularity: 3
followers: 16
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xe81f21c0ef4f07c0e05d68045b42d895c740893de1e875bcb1b5c02ab7e74a94
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954705
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954705
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ef4e491c-007e-45a0-bbaf-ae109de5c6f9.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/ef4e491c-007e-45a0-bbaf-ae109de5c6f9.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/ef4e491c-007e-45a0-bbaf-ae109de5c6f9
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-21T13:42:37Z
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 0xe81f21c0ef4f07c0e05d68045b42d895c740893de1e875bcb1b5c02ab7e74a94. Chain 2 (Bitcoin): anchored in block 954705 (2026-06-21T13:42:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef4e491c-007e-45a0-bbaf-ae109de5c6f9.json and https://artists.proofprofile.net/proofs/artist/ef4e491c-007e-45a0-bbaf-ae109de5c6f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T13:42:37Z
album: Nerdy Cousins
  type: MusicAlbum
  date published: 2024-08-30
  track: Dream big
    type: MusicRecording
    duration: PT2M2S
    duration ms: 122181
    explicit: false
    by artist: Serra
    in album: Nerdy Cousins
      type: MusicAlbum
      date published: 2024-08-30
    isrc code: BK4DA2434612
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-05T06:29:38+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x19248e49ffc8b4440951b18ba6912b5e6de07560bc78fc482ec858c12ef6a94c
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 956772
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/956772
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4DA2434612
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-05T10:01:46Z
    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 0x19248e49ffc8b4440951b18ba6912b5e6de07560bc78fc482ec858c12ef6a94c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BK4DA2434612.
      date published: 2026-07-05T10:01:46Z
    audio: Dream big
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 220.056
      additional property: Musical Key
        type: PropertyValue
        value: 11
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 1
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.736
      additional property: Energy
        type: PropertyValue
        value: 0.795
      additional property: Speechiness
        type: PropertyValue
        value: 0.255
      additional property: Acousticness
        type: PropertyValue
        value: 0.017
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.864
      additional property: Liveness
        type: PropertyValue
        value: 0.15
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.097
      additional property: Loudness (dB)
        type: PropertyValue
        value: -7.309
      additional property: Key Name
        type: PropertyValue
        value: B
      additional property: Mode Name
        type: PropertyValue
        value: Major
  track: Lazy afternoon
    type: MusicRecording
    duration: PT2M2S
    duration ms: 122181
    explicit: false
    by artist: Serra
    in album: Nerdy Cousins
      type: MusicAlbum
      date published: 2024-08-30
    isrc code: BK4DA2434619
    additional property: CopyrightID
    additional property: CopyrightStatus
      type: PropertyValue
      value: registered
    additional property: CopyrightRegisteredAt
      type: PropertyValue
      value: 2026-07-21T20:15:22+00:00
    additional property: CopyrightChainExplorerURL
      type: PropertyValue
      value: https://explorer.copyrightchains.com/tx/0x5c730648809ad38719276462e6e142cb95ba0b047afe0839d3110caf788f7ded
    additional property: OTSHash
    additional property: OTSBitcoinBlock
      type: PropertyValue
      value: 959058
    additional property: OTSBitcoinBlockVerifyURL
      type: PropertyValue
      value: https://blockstream.info/api/block-height/959058
    additional property: OTSVerificationAPI
      type: PropertyValue
      value: https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BK4DA2434619
    additional property: OTSTimestamp
      type: PropertyValue
      value: 2026-07-21T21:09:36Z
    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 0x5c730648809ad38719276462e6e142cb95ba0b047afe0839d3110caf788f7ded. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/BK4DA2434619.
      date published: 2026-07-21T21:09:36Z
    audio: Lazy afternoon
      type: AudioObject
      additional property: Tempo (BPM)
        type: PropertyValue
        value: 126.769
      additional property: Musical Key
        type: PropertyValue
        value: 4
      additional property: Mode (Major/Minor)
        type: PropertyValue
        value: 0
      additional property: Time Signature
        type: PropertyValue
        value: 4
      additional property: Danceability
        type: PropertyValue
        value: 0.556
      additional property: Energy
        type: PropertyValue
        value: 0.935
      additional property: Speechiness
        type: PropertyValue
        value: 0.127
      additional property: Acousticness
        type: PropertyValue
        value: 0.002
      additional property: Instrumentalness
        type: PropertyValue
        value: 0.919
      additional property: Liveness
        type: PropertyValue
        value: 0.318
      additional property: Valence (Positivity)
        type: PropertyValue
        value: 0.263
      additional property: Loudness (dB)
        type: PropertyValue
        value: -6.588
      additional property: Key Name
      additional property: Mode Name

Key Name
type: PropertyValue
value: E

Mode Name
type: PropertyValue
value: Minor