91 apps in Cycle I moved money around. None of them kept the books. So I built the accounting layer. What it does: - Balances + full history with live fiat values (37 currencies), HTLC swap funds included -Stake, unstake and track rewardsright inside Nimiq Pay, with a live staker record -Payment requests— create an invoice, share the link or QR, and it marks itself paid when the tagged transaction lands on-chain -Signed, shareable receipts— proof-of-payment with a public verification page. Ed25519 signature + on-chain cross-check: forged, reverted, or non-existent transactions fail verification - Tax-ready CSV statements + net-flow and balance-trajectory analytics (7d / 30d / all) Try it in 30 seconds — no wallet needed: demo mode with a sample wallet (1,000 NIM in, 700 staked, rewards accruing). https://nimbooks.subimpact.net Repo (MIT, open): https://github.com/subimpact/nimbooks Demo video:https://nimbooks.subimpact.net/nimbooks-demo.mp4 | https://youtube.com/shorts/y6ZInV49tMc Feedback very welcome — especially on the receipt format and the verification page. Happy to walk through it at Sip & Ship.