About

What this project is

The Q-day Clock is an independent reading of public evidence about the arrival of cryptographically-relevant quantum computers (CRQCs). The threat scope is explicitly limited to RSA-2048 via Shor and AES-128 weakening via Grover. See methodology for full details.

What this project is not

• It is not a prediction or a calendar date.
• It is not financial, security, or legal advice.
• It is not affiliated with any quantum-hardware vendor, standards body, or government agency.
• It does not include classified or intelligence-derived signals.

Re-verifying the clock state

Every published clock state in data/clock_state.json is signed with Ed25519. The public key is embedded below and in every signed artifact. Anyone can re-verify a clock state independently by running:

python -m qday_clock.core.signing verify \
    --payload site/data/clock_state.json

Signing public key (Ed25519, base64)

gpg724ZUbG1PHzEI9L/dhcJGkbz5S/251STdeN3P0YU=

Contact

Issues, corrections, and methodology feedback are welcome via the project's source repository. Operator-curated signals and overrides are themselves recorded with provenance in the signed manifest.

Disclaimers

Failures and reversals are recorded in the project CHANGELOG with the same prominence as positive movements (per the project's rigor policy on failure-reporting parity). If a gate fires or a previously published reading is retracted, the original reading is preserved in data/history.jsonl; nothing is rewritten.