InstantAdPay — site

Membership advertising with immutable on-chain settlement. Zero-dependency Node server (RM Circle pattern): static pages + JSON API + SSE ledger.

Architecture

• server.js — http server: pages, /api/*, /join/<id> sponsor links, SSE feed
• chain.js — contract reader + persistent event indexer (free public RPCs)
• auth.js — SIWE wallet sign-in (EIP-4361), sessions in the volume
• accounts.js — site-side records only (free members, last-touch sponsor attribution, handles). The CHAIN is the source of truth for money/credits.
• public/ — landing, live ledger, member area; no client libraries

Chain flip (rehearsal → mainnet)

Everything chain-specific lives in data/config.json (volume): {contract, chainId, chainName, explorer, rpcs, deployBlock}. Defaults point at the Amoy rehearsal deployment. Launch = deploy the mainnet contract, wipe accounts.json/sessions.json/chain-index.json, PATCH /api/admin/chain with the mainnet values, set rehearsal:false via /api/admin/site. Same code, different config.

Run

PORT=3100 node server.js       # DATA_DIR defaults to ./data

Admin API auth: Authorization: Bearer $ADMIN_PASSWORD.

Spec: ../CONTRACT-SPEC.md (v1.0.3-frozen). Contracts: ../contracts/.