Marc E. Bassy
type: MusicGroup
description: Marc Griffin, known professionally as Marc E. Bassy, is an American singer and songwriter from the San Francisco Bay Area. He is the former vocalist of the Los Angeles-based pop band 2AM Club. His sol
popularity: 4
followers: 10
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
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  value: https://explorer.copyrightchains.com/tx/0x00ef8d0328b54f769daef3509c03e00c168f6873c173640ef56153b82e6e1527
additional property: OTSHash
additional property: OTSBitcoinBlock
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additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
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additional property: OTSProofURL
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additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/b3b6b3c2-13d7-4b42-9d9a-c051254cf8ec.json
additional property: OTSVerificationAPI
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additional property: OTSTimestamp
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  value: 2026-06-21T07:29:20Z
additional property: OTSCanonicalRecord
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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
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  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ef8d0328b54f769daef3509c03e00c168f6873c173640ef56153b82e6e1527. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b3b6b3c2-13d7-4b42-9d9a-c051254cf8ec.json and https://artists.proofprofile.net/proofs/artist/b3b6b3c2-13d7-4b42-9d9a-c051254cf8ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-21T07:29:20Z
  text: {"copyright_id":"0x00ef8d0328b54f769daef3509c03e00c168f6873c173640ef56153b82e6e1527","name":"Marc E. Bassy","registered_at":"2026-06-20T13:46:45Z","symbol":"NIM1623564","token_address":"0xbe9a05ea5ae5b836e9108e14cc29929da6155af6","type":"artist","uuid":"b3b6b3c2-13d7-4b42-9d9a-c051254cf8ec"}
track: Back In The Days
  type: MusicRecording
  duration: PT2M17S
  duration ms: 137041
  explicit: false
  by artist: LaRussell
  by artist: Hokage Simon
  by artist: Tope
  by artist: Marc E. Bassy
  in album: IT'S DIFFERENT
    type: MusicAlbum
    date published: 2023-08-20
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  additional property: OTSTimestamp
    type: PropertyValue
    value: 2026-07-02T03:30:09Z
  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 0x28dcda30831cb4688665fcc1e19bcf19277a135c30b224c8f6e838e19daa484e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZS7J2321720.
    date published: 2026-07-02T03:30:09Z
  audio: Back In The Days
    type: AudioObject
    additional property: Tempo (BPM)
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    additional property: Musical Key
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    additional property: Mode (Major/Minor)
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    additional property: Danceability
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    additional property: Energy
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    additional property: Speechiness
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    additional property: Acousticness
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    additional property: Instrumentalness
      type: PropertyValue
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    additional property: Liveness
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    additional property: Valence (Positivity)
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      value: 0.588
    additional property: Loudness (dB)
      type: PropertyValue
      value: -12.463
    additional property: Key Name
      type: PropertyValue
      value: Eb
    additional property: Mode Name
      type: PropertyValue
      value: Major