Galaxy SIGNAL: PoUV-verified radio-astronomy candidate triage (confirmed-block snapshot)

A snapshot of Galaxy SIGNAL's live blockchain output, deposited for citable, permanent reference. Galaxy SIGNAL is an experimental blockchain (testnet, no financial value) whose consensus mechanism — Proof-of-Useful-Verification (PoUV) — is real triage of Breakthrough Listen radio-astronomy data, instead of arbitrary hashing. A block can only be mined once a real detection ("hit") from the Breakthrough Listen L-band survey clears a classifier trained on the survey's own ON/OFF labeling methodology. This deposit is not a discovery claim. It archives the network's actual, checkable output — which hits the classifier accepted, when, and under which exact model — as an immutable, timestamped, independently verifiable record. See the included README.md for full methodology, verification instructions, and licensing. Live network: https://galaxysignal.space — whitepaper: https://galaxysignal.space/whitepaper