Shoot 2025-12-31-194807 — philthompson.me

Birds
Mandel

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Shoot 2025-12-31-194807

For this last gallery of 2025, I have just a few photos from recent trips to the lake and to the coast. The most unexpected bird was a lone Dunlin, but that's hardly a rare bird this time of year on the coast. See you next year!

My "birds in review" collages can be found here.

Signature

📄 hashes-2025-12-31-194807.txt

📄 hashes-2025-12-31-194807.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: cb1ef45d848a524aaa3b18e08781b06c978ea749d447238e9be1b0414dbfb177

view the ALGO tx on explorer.perawallet.app: 5TFJDHBIEPSBHNNMR4O34DY5LFXFCCJWYX6SVVQSO7PENYQ6TJ4A