1.1 Collect Official Release Bulletin (Source Evidence)

Item Description Key Points
Source China Post official website / public account Screenshot must include URL bar
Content Stamp code, name, issue date, denomination Ensure key fields are captured
Screenshot No cropping or editing Can record screen while opening the page
Storage Original screenshot + IPFS + OTS First item of public assets

Key fields to capture:

  • Stamp name (Chinese + English)
  • Stamp code (e.g., 2026-3)
  • Issue date (exact day)
  • Denomination / set quantity
  • Issuer (China Post Group Corporation)
  • Official URL

1.2 Define Basic Event Elements

Element Description Example
Stamp Theme From bulletin Chinese Seal Engraving III
Core Date From bulletin 2026-04-20
Mailing Date Actual mailing date 2026-04-20/21
Core Location Post office name Shenzhen Nanyou Post Office
Series Number NFT series number #001 ~ #009
Handwritten Code Unique per cover STP_FDC_20260420_001

1.3 Create Unique Handwritten Code

  • Format: STP_FDC_YYYYMMDD_XXX
  • Example: STP_FDC_20260420_001
  • Write clearly on the envelope (front or back) with permanent ink

1.4 Field Execution Tool Checklist

Required Apps:

Purpose Recommended App Key Points
Screen Recording Built-in recorder Record continuously to prove timeline
GPS Track GPX Logger / Strava Start before departure, export .gpx
Weather China Weather / Weather.com Screenshot with date + location + temperature
Postal Query China Post App / Cainiao Record tracking history
Camera Built-in camera Enable geolocation

Pre-departure Checklist:

  • System time: auto-sync enabled
  • Camera geolocation: enabled
  • Screen recording mic: enabled
  • GPS background location: enabled
  • Storage space: ≥10GB
  • Battery: ≥80%, bring power bank

Physical Items:

  • Newspaper of the day (only show header + date)
  • Envelopes with handwritten codes
  • Stamps / envelope set
  • Permanent marker / pen