Proof of Timestamp and Immutability

All files related to this demo site (HTML and image assets) are stored on Amazon S3. You can check the last modified time of any file in the bucket using the AWS CLI. No credentials are required.

🔍 To check a small subdirectory (~6 files):

aws s3api list-objects-v2 \
    --no-sign-request \
    --bucket capybara1234 \
    --prefix demo_page/carpet01/image_files/9/ \
    --query 'Contents[].{Key: Key, LastModified: LastModified}' \
    --output table

📁 To check the entire demo_page/ folder (~1 million files):

aws s3api list-objects-v2 \
    --no-sign-request \
    --bucket capybara1234 \
    --prefix demo_page/ \
    --query 'Contents[].{Key: Key, LastModified: LastModified}' \
    --output table
Note: The returned timestamps are in UTC. To convert to AoE (Anywhere on Earth, UTC−12), use the following code and replace the timestamp string with your own:
Python:
from datetime import datetime, timedelta
  
utc = datetime.strptime("2025-05-23T10:20:58Z", "%Y-%m-%dT%H:%M:%SZ")
aoe = utc - timedelta(hours=12)
print(aoe.strftime("%Y-%m-%d %H:%M:%S AoE"))
Return to Home Page