JACQ
type: MusicGroup
description: Jacq is a surname. Angèle Jacq (1937–2021), Breton writer Christian Jacq (born 1947), French author and Egyptologist Éliane Jacq (1948–2011), French athlete Grégoire Jacq (born 1992), French tennis p
popularity: 8
followers: 29
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x2b0c358d66cd026b3197ea134d06812550dc1d607ec9c93c2ef073e416684bf2
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 953867
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/953867
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05ecd333-819d-440b-b9a6-b19df6261c62.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/05ecd333-819d-440b-b9a6-b19df6261c62.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/05ecd333-819d-440b-b9a6-b19df6261c62
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-16T01:09:47Z
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
subject of: OpenTimestamps Proof of Existence
  type: DigitalDocument
  encoding format: application/vnd.opentimestamps.ots
  description: Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0c358d66cd026b3197ea134d06812550dc1d607ec9c93c2ef073e416684bf2. Chain 2 (Bitcoin): anchored in block 953867 (2026-06-16T01:09:47Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05ecd333-819d-440b-b9a6-b19df6261c62.json and https://artists.proofprofile.net/proofs/artist/05ecd333-819d-440b-b9a6-b19df6261c62.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-16T01:09:47Z
album: Daydream
  type: MusicAlbum
  date published: 2025-02-15
album: Out Of This World
  type: MusicAlbum
  date published: 2025-04-06
album: Float
  type: MusicAlbum
  date published: 2025-06-29