deep focus
type: MusicGroup
description: thumb|Diagram of decreasing apertures, that is, increasing f-numbers, in one-stop increments; each aperture has half the light gathering area of the previous one. The actual size of the aperture will
popularity: 8
followers: 40
additional property: CopyrightID
additional property: CopyrightChainExplorerURL
  type: PropertyValue
  value: https://explorer.copyrightchains.com/tx/0x402e70162a78a90eb8fdb51dfae9971b38a755b6949d732c41f8c53a3e880491
additional property: OTSHash
additional property: OTSBitcoinBlock
  type: PropertyValue
  value: 954066
additional property: OTSBitcoinBlockVerifyURL
  type: PropertyValue
  value: https://blockstream.info/api/block-height/954066
additional property: OTSProofURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/79feb911-20e2-4390-9f11-ac5a1741b239.ots
additional property: OTSRecordURL
  type: PropertyValue
  value: https://artists.proofprofile.net/proofs/artist/79feb911-20e2-4390-9f11-ac5a1741b239.json
additional property: OTSVerificationAPI
  type: PropertyValue
  value: https://artists.proofprofile.net/api/v1/bot/ots/verify/artist/79feb911-20e2-4390-9f11-ac5a1741b239
additional property: OTSTimestamp
  type: PropertyValue
  value: 2026-06-17T08:11:48Z
additional property: OTSCanonicalRecord
  type: PropertyValue
  value: {"copyright_id":"0x402e70162a78a90eb8fdb51dfae9971b38a755b6949d732c41f8c53a3e880491","name":"deep focus","registered_at":"2026-06-17T08:07:49Z","symbol":"NIM1333429","token_address":"0xa1f3f6c79863c742b070be17f715955ad3d88ea6","type":"artist","uuid":"79feb911-20e2-4390-9f11-ac5a1741b239"}
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 0x402e70162a78a90eb8fdb51dfae9971b38a755b6949d732c41f8c53a3e880491. Chain 2 (Bitcoin): anchored in block 954115 (2026-06-17T15:44:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/79feb911-20e2-4390-9f11-ac5a1741b239.json and https://artists.proofprofile.net/proofs/artist/79feb911-20e2-4390-9f11-ac5a1741b239.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
  date published: 2026-06-17T15:44:10Z
  text: {"copyright_id":"0x402e70162a78a90eb8fdb51dfae9971b38a755b6949d732c41f8c53a3e880491","name":"deep focus","registered_at":"2026-06-17T08:07:49Z","symbol":"NIM1333429","token_address":"0xa1f3f6c79863c742b070be17f715955ad3d88ea6","type":"artist","uuid":"79feb911-20e2-4390-9f11-ac5a1741b239"}
album: Spirit
  type: MusicAlbum
  date published: 2022-11-09
album: Tiara
  type: MusicAlbum
  date published: 2023-01-28
album: Focussiara
  type: MusicAlbum
  date published: 2023-01-30