Bla Bla
type: MusicGroup
description: BLA BLA is an interactive animated film for computer created by with Montreal studio AATOAA, and produced by the National Film Board of Canada. The online work has been described as exploring "the p
popularity: 3
followers: 61
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x516b180efda634c95212a07bd7352aa68dd1927843e3f110dee6c3742e6fb87e
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954065
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954065
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4e500c49-8787-4d45-8daf-b5ea3daa8f63.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/4e500c49-8787-4d45-8daf-b5ea3daa8f63.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/4e500c49-8787-4d45-8daf-b5ea3daa8f63
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:10:43Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x516b180efda634c95212a07bd7352aa68dd1927843e3f110dee6c3742e6fb87e","name":"Bla Bla","registered_at":"2026-06-16T16:48:04Z","symbol":"NIM1114000","token_address":"0x2b0580b6c37e5b60231647833451f3ea21496ab5","type":"artist","uuid":"4e500c49-8787-4d45-8daf-b5ea3daa8f63"}
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 0x516b180efda634c95212a07bd7352aa68dd1927843e3f110dee6c3742e6fb87e. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e500c49-8787-4d45-8daf-b5ea3daa8f63.json and https://artists.proofprofile.net/proofs/artist/4e500c49-8787-4d45-8daf-b5ea3daa8f63.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T08:10:43Z
  text: {"copyright_id":"0x516b180efda634c95212a07bd7352aa68dd1927843e3f110dee6c3742e6fb87e","name":"Bla Bla","registered_at":"2026-06-16T16:48:04Z","symbol":"NIM1114000","token_address":"0x2b0580b6c37e5b60231647833451f3ea21496ab5","type":"artist","uuid":"4e500c49-8787-4d45-8daf-b5ea3daa8f63"}
album: W Pracowni Slowa I Dzwieku
  type: MusicAlbum
  date published: 1900
album: W Pracowni Slowa I Dzwieku
  type: MusicAlbum
  date published: 1900