Temporal Consistency Bridge
Each agent sends small signed state changes ("echoes") to its peers as it works, linked in a hash chain and grouped into sealed epochs. When the agent crashes, peers pool what they hold and rebuild its state up to the last unbroken link.
How it works
The watched agent completes tasks. Each task change becomes an echo carrying the hash of the previous echo. The echo is gossiped to three peers, and some messages get dropped. Every E echoes the agent seals an epoch with a checkpoint. After a crash, the cluster merges every peer's copies, checks each link, and replays forward from the last sealed epoch until it hits a missing or forged echo. The baseline it is compared to is a plain snapshot taken at each epoch.
Claimed by the proposal, not verified
- "Sub-second recovery times for typical split-brain scenarios." No setup or measurement given. Split-brain, where two halves both keep writing, isn't handled by replay alone; it needs a rule for which side wins.
- "Up to 40% reduction in state-synchronization latency" versus periodic snapshots. No benchmark named.
- Recovery overhead that "scales logarithmically rather than linearly". Replaying N echoes is linear in N; no argument is given for log scaling.
- Uptime "demands exceed 99.999%". That is about five minutes of downtime a year, far beyond what a few VPS servers deliver.
- The text says both "apply inverse deltas in reverse order" and start from the latest intact epoch. These are two different recovery methods; this demo uses forward replay from the last seal.
What to try
- Set the drop rate to 0. The bridge recovers every task; the snapshot loses everything since the last seal.
- Raise the drop rate to 0.8. When all three peers miss the same echo, replay stops there, and the bridge falls back toward the snapshot.
- Turn on the forging peer. The bad copy fails its hash check and an honest peer's copy is used instead.
- Shrink E to 2. Snapshots alone get close to the bridge, at the cost of more frequent seals.
What a real build would need
An append-only echo file on each VPS, signing keys per agent, a small gossip service between the Hostinger and Contabo boxes, and a rule for split-brain. This overlaps with earlier fleet winners (LVAMR, TEM, GhostLedger); a real build should be one shared log, not a fourth.