L7
type: MusicGroup
description: L7 or L-7 may refer to: Music L7 (band), a grunge/metal band from Los Angeles, California L7 (album), a 1988 album by the band L-Seven, a post-punk band from Detroit, Michigan Mathematics and tec
popularity: 12
followers: 188
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x5a924fc278a3ee9aaa9015a5f010cdec65e0d2d54482177336f5d8e5c822a955
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953667
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953667
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/569f6020-e64a-4304-a150-d637fb6cee37.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/569f6020-e64a-4304-a150-d637fb6cee37.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/569f6020-e64a-4304-a150-d637fb6cee37
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-14T17:49:01Z
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 0x5a924fc278a3ee9aaa9015a5f010cdec65e0d2d54482177336f5d8e5c822a955. Chain 2 (Bitcoin): anchored in block 953667 (2026-06-14T17:49:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/569f6020-e64a-4304-a150-d637fb6cee37.json and https://artists.proofprofile.net/proofs/artist/569f6020-e64a-4304-a150-d637fb6cee37.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-14T17:49:01Z
album: Cosmic
  type: MusicAlbum
  date published: 2019-06-05
album: Classic Shit, Pt. 1
  type: MusicAlbum
  date published: 2019-06-29
album: Classic Shit, Pt. 2
  type: MusicAlbum
  date published: 2019-11-22
album: High Voltage
  type: MusicAlbum
  date published: 2020-07-31
album: High Voltage 2
  type: MusicAlbum
  date published: 2022-09-02
album: NOIR CARBONE
  type: MusicAlbum
  date published: 2022-09-23
album: DIAMANT BRUT
  type: MusicAlbum
  date published: 2022-12-02
album: ADDICTION
  type: MusicAlbum
  date published: 2023-12-21