Spark Program | Fiber RGB++ Swap

DAOs & Funding Spark Program
29

Hi all, Week 4 done, and with it the full scope. Closing update on Fiber RGB++ Swap.

What Week 4 was: testing, demo, docs.

Testing. Ran the complete two-node flow on local testnet nodes: hub publishes a signed ad, listener discovers it over gossip sync, best-rate picks the max, both books converge. Also verified expiry pruning (day-old ads correctly disappear from listings) and the CLI (fnn-cli swap_ad …) returning identical results to the API. One real bug found and fixed along the way: publishes originally only saved locally and waited on the peer’s next scheduled poll now publish also pushes straight into the gossip actor, so ads arrive within seconds, no manual re-sync. Details and curl logs are in the repo.

Demo. Recorded the whole thing on the market board UI I built for this (single HTML file, no build step) publish on the left, watch it appear on the right, best-rate flip when a better offer lands:

Docs. Everything needed to run your own advertising node is in the repos: node configs, one-command run/stop scripts (scripts/run.sh --fresh), the API/CLI reference, and a testing guide including the quirks I hit (slow first boot on testnet init, publish responses lagging on loaded machines while the write still lands). The swap-ad message schema and gossip integration points are documented for anyone extending this to a third asset pair.

Repos:

Where this lands against the proposal: W1 design + schema, W2 gossip type and signing/verification, W3 discovery index with RPC/CLI, W4 testing plus demo plus docs, all four delivered. The leap and the generalized swap execution stay exactly where the revised scope put them: follow-on work, with the design notes from my CCH deep-dive ready to become that proposal.

Thanks to everyone who commented along the way. Happy to address any review points.

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