FEQ
type: MusicGroup
description: FEQ may refer to: Festival d'été de Québec Freight Elevator Quartet FEQ, a grade of teak wood
popularity: 11
followers: 160
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x7a64b34ab8a3107c67bec04fa8ceccbf40c68dfdc1097cff15e1b7453774eb04
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953719
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953719
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8872dcb7-5705-4ee1-8c12-c4e2e9d3efeb.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/8872dcb7-5705-4ee1-8c12-c4e2e9d3efeb.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/8872dcb7-5705-4ee1-8c12-c4e2e9d3efeb
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-15T01:07:48Z
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 0x7a64b34ab8a3107c67bec04fa8ceccbf40c68dfdc1097cff15e1b7453774eb04. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8872dcb7-5705-4ee1-8c12-c4e2e9d3efeb.json and https://artists.proofprofile.net/proofs/artist/8872dcb7-5705-4ee1-8c12-c4e2e9d3efeb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-15T01:07:48Z
album: ELA REBOLA
  type: MusicAlbum
  date published: 2024-06-28
album: ELA REBOLA
  type: MusicAlbum
  date published: 2024-06-28
album: JULIANA
  type: MusicAlbum
  date published: 2024-07-26
album: JULIANA
  type: MusicAlbum
  date published: 2024-07-26
album: DOMINGO A TARDE
  type: MusicAlbum
  date published: 2024-08-14
album: DOMINGO A TARDE
  type: MusicAlbum
  date published: 2024-08-14
album: FAZENDO O CERTO
  type: MusicAlbum
  date published: 2025-04-12
album: MISTERIOSA
  type: MusicAlbum
  date published: 2025-05-23