A BCH-priced offer is a signed transaction with a fixed amount, so a seller who wants "$500" had to relist whenever the rate moved. The new USD mode moves the certificate into a small CashScript covenant (contracts/usd-listing.cash). Anyone may buy it by paying the seller target_cents / price, where the price comes from a message signed by the gateway's oracle key — the median of five exchanges the site already uses. The payout is clamped to a floor/ceiling band the seller sets, and the seller can reclaim the certificate at any time. What the chain can and cannot enforce, stated plainly in the contract and the UI: script can require a transaction to be mined no earlier than a time, never no later, so a quote cannot expire on-chain. The band is the guarantee, and quotes are bound to the listing's outpoint so cancelling and relisting voids every quote ever issued. An offline libauth VM test covers list, buy, underpayment, foreign-listing quotes, forged quotes, band clamping, cancel and a non-seller cancel; on chipnet aloevera.test was listed at $0.30, bought by a second wallet for 119,090 sat at $251.91, listed again by the new owner and cancelled. Gateway: GET /api/price/oracle[?txid=] serves the oracle public key and per-listing signed quotes; the key lives in oracle.key beside the gateway, never in the repo. POST /api/market accepts kind "usd" after reproducing the redeem script from the stated terms and finding the certificate in that covenant; such listings are pruned once the covenant output is spent; DELETE accepts the listing's seller while the index shows the covenant as holder. Dashboard: the Sell tab has "Price is fixed in: US dollars / BCH", a band control with the resulting BCH range, and cancel through the covenant. Market: USD listings show the dollar price, today's BCH equivalent and the band; buying fetches a quote and completes the covenant spend. Studio no longer sends a needless UPD when the registry view is stale, and missing files on a name now get a real 404 page. |
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|---|---|---|
| contracts | ||
| setup | ||
| src | ||
| test | ||
| .gitignore | ||
| ariadne.config.json | ||
| BROWSER-PROMPT.md | ||
| build-web.mjs | ||
| DESIGN-collision-modes.md | ||
| DESIGN-hosting-pact.md | ||
| DESIGN-root-tld-cert.md | ||
| ENGINE.md | ||
| namespaces.pdf | ||
| OPERATIONS-electrum.md | ||
| package-lock.json | ||
| package.json | ||
| PROTOCOL.md | ||
| README.md | ||
| ROADMAP.md | ||
| sia-test.html | ||
BNS — Namecoin-style decentralized names on Bitcoin Cash (chipnet)
A working prototype of "Option 3": names are CashTokens name certificates on the BCH chain (no fork, no sidechain), records ride in OP_RETURN, discovery via a beacon address, and the resolver is embedded in a wallet app with a built-in browser pane — the Brave/MetaMask-browser architecture in miniature.
See PROTOCOL.md for the on-chain design and its honest limitations.
Layout
src/lib/bns.js— protocol core: payload codec, chain indexer/resolver, tx builderssrc/wallet-app.js— wallet + embedded resolver + browser UI (npm run wallet→ http://localhost:4626)src/register.js/src/update.js/src/resolve.js— CLI equivalentswallets.json— chipnet seed phrases (TESTNET ONLY — never reuse for real funds)src/lib/gen-wallets.js— one-time wallet generation (already run)
Setup
npm install- Fund the wallet with free chipnet tBCH: go to https://tbch.googol.cash/,
paste the wallet address (shown in the app sidebar or by
node src/lib/gen-wallets.js), pick chipnet, solve the captcha. ~0.001 tBCH funds hundreds of registrations. npm run walletand open http://localhost:4626
Standalone resolver daemon (make EVERY browser resolve .bch)
src/daemon/bnsd.js— DNS server (answers*.bchfrom the chain, forwards everything else upstream) + HTTP gateway that serves on-chain sites by Host header. Test unprivileged:node src/daemon/bnsd.js --dns-port 5354 --http-port 8081, thennode src/daemon/dig.js hello.bch.setup/install.ps1— run from an elevated PowerShell. Installs the daemon as a boot-time scheduled task (SYSTEM, auto-restart) and wires the OS to it:- default (
-Mode nrpt): adds an NRPT rule so only.bchqueries reach the daemon; all other DNS is untouched. -Mode full: points every adapter's DNS at 127.0.0.1 (daemon forwards non-.bch upstream, ncdns-style); original servers are saved and restored on uninstall.
- default (
setup/uninstall.ps1— reverses everything (rule/adapters/task).
HTTPS for .bch: the "BNS Local Root CA" (created on demand in ca/, keep
root-ca.key private) signs per-name certs. The daemon's :443 gateway mints
them on the fly for locally-served names; node src/lib/issue-cert.js <name>
issues one for a real server (see the coinspectrum.bch nginx vhost). The
installer trusts the root machine-wide and enables Firefox's
enterprise-roots policy; cert fingerprints are published in "tls" chain
records for pinning.
Caveats: browsers with "secure DNS" (DoH) enabled bypass the OS resolver — disable it or add an exception; ports 53/80/443 must be free.
Try it
- Register
hellowith inline HTML (a website stored entirely on-chain), then typehello.bchin the address bar — the app resolves it from the blockchain (not DNS) and renders it. - Or CLI:
node src/register.js hello '{"h":"<h1>Served from the BCH chain</h1>"}'thennode src/resolve.js hello