Shoot 2025-11-21-123330 — philthompson.me

Birds
Mandel

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Shoot 2025-11-21-123330

The raptor sightings continue this fall, including hawks and some Turkey Vultures which are not very common here this time of year. A neighbor also had a Barred Owl in their yard!

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

Signature

📄 hashes-2025-11-21-123330.txt

📄 hashes-2025-11-21-123330.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: cd46b11a7e17e3203ac835e4f4b5bac6c41cd083e56bcf40d3531de22085278e

view the ALGO tx on explorer.perawallet.app: GRBFETUS6CX4NG2LRJGCTI45C2K2MO2HF2VM5QVLAICXJZQZ63RQ