Epée & Koum
type: MusicGroup
popularity: 3
followers: 712
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0xcd0addcdf855f141f5ae3a2062b0aea3bfd859debacdfd42f95b34887e0f9608
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954500
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954500
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b11e68c-b353-4f28-b785-b185154fb8ce.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/9b11e68c-b353-4f28-b785-b185154fb8ce.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/9b11e68c-b353-4f28-b785-b185154fb8ce
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-20T04:47:29Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0xcd0addcdf855f141f5ae3a2062b0aea3bfd859debacdfd42f95b34887e0f9608","name":"Epée & Koum","registered_at":"2026-06-20T03:42:47Z","symbol":"NIM1500615","token_address":"0x0fd5989774d61db2bd94b407af3039b4ac517f61","type":"artist","uuid":"9b11e68c-b353-4f28-b785-b185154fb8ce"}
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 0xcd0addcdf855f141f5ae3a2062b0aea3bfd859debacdfd42f95b34887e0f9608. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9b11e68c-b353-4f28-b785-b185154fb8ce.json and https://artists.proofprofile.net/proofs/artist/9b11e68c-b353-4f28-b785-b185154fb8ce.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-20T04:47:29Z
  text: {"copyright_id":"0xcd0addcdf855f141f5ae3a2062b0aea3bfd859debacdfd42f95b34887e0f9608","name":"Epée & Koum","registered_at":"2026-06-20T03:42:47Z","symbol":"NIM1500615","token_address":"0x0fd5989774d61db2bd94b407af3039b4ac517f61","type":"artist","uuid":"9b11e68c-b353-4f28-b785-b185154fb8ce"}
album: Homme démesuré
  type: MusicAlbum
  date published: 1993
album: Homme démesuré
  type: MusicAlbum
  date published: 1993-01-01
album: Makossa collection non stop - EP
  type: MusicAlbum
  date published: 1997
album: Sagittaire
  type: MusicAlbum
  date published: 1998