A local birder told me the location of a Barred Owl, so I went out in the rain to try to find it. Even when knowing where it was, it would be easy to overlook. After finding the owl, I used silent shooting mode on my mirrorless camera and took only a few shots before stepping away. I was looking up at the owl from underneath, so it wasn't worth waiting for a good shot anyway. I spent a few minutes after that trying to get a view of it, and perhaps its face, from farther away. After walking all around the tree and lots of scanning with binoculars I wasn't able to get a view of it. I wonder how many owls I've walked right by without knowing.
The M31 Andromeda Galaxy shot here was a test untracked shot with the Canon RF 85mm F2 MACRO IS STM lens. It's a stack of 149 frames of 1.3s, at f/2 and ISO 1600, for total of about 3.2 minutes of data.
These photos are © 2025 Phil Thompson, all rights reserved.
My "birds in review" collages can be found here.
📄 hashes-2025-02-05-091351.txt
📄 hashes-2025-02-05-091351.txt.sig
The above hashes-<date>.txt
file contains SHA-256 hashes of all the photos
from this shoot. The hashes-<date>.txt.sig
is a signature of that hashes
file, created with my PGP key. The signature file
itself was written to both the Bitcoin Cash and Algorand blockchains, in the
OP RETURN
and Note
fields respectively, using the transactions below.
In short, this proves that these photos and the signature both existed at the time the
transactions were written to the Bitcoin Cash and Algorand blockchains.
This blog post has more details.
view the BCH tx on blockchair.com: 6363196e55a87a6d5e7ed65ef68883faedde8570646a068b89d7aa9e4a6f2bbc
view the ALGO tx on explorer.perawallet.app: XQZ44WH4UIVCZHOZMFHZWYVDQHVBSQFJ2UQMP53473JFBEHCV2XA
© 2025 Phil Thompson
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