vs Blockonomics —
where we made a different call.
Blockonomics is a mature product. We're not pretending to beat it at every line item. Here's where chainkit-cloud differs — in pricing shape, in the SDK surface, in the privacy + receipts story — so you can pick the one that fits the way you build.
chainkit figures are live from our pricing API. Blockonomics figures are from their published pricing as of July 2026 — check their site for the current numbers.
Custody model
- Funds go directly to the merchant wallet
- Merchant retains the private key on every flow
Both are non-custodial; chainkit additionally rejects xprv/yprv/zprv at the API + form layer.
- xpub rotation per invoice (no address reuse)
Pricing
- Free tier
Blockonomics caps lifetime, not monthly — chainkit Free renews every calendar month.
Free · up to 25 invoices / mo20 free incoming payments lifetime - Paid tier — entry€29 / mo + 0.75% settled — pay the greater1 % per transaction
- Paid tier — growth€99 / mo + 0.45% settled — pay the greater1 % per transaction
- On €10,000/mo settled volume
chainkit is cheaper above €2,900/mo settled — and the gap widens with volume.
€75 (Launch)€100 (flat 1 %) - Predictable ceiling at high volumeyes — minimum + fee_rate, not a flat %flat % scales without cap
Developer surface
- Public Go SDK (intent + watcher + signature verify)
chainkit ships sdk/payment as part of chainkit-go-sdk; Blockonomics is a REST + HMAC story you wire up yourself.
- Webhooks (HMAC-signed)
- Idempotent invoice creation
- Cloud-side watcher (server you don't run)
- SDK-side watcher (so your app sees confirmations first)
Receipts + tax
- PDF invoice + receipt (snapshot, immutable)
chainkit's receipt embeds the merchant's VAT id + tax breakdown from the snapshot at invoice issuance; a later profile edit cannot rewrite a generated receipt.
partial - Bulk receipts ZIP for quarter-end
- CSV / JSON invoice exports
- Tax-engine (jurisdictional, OSS / IOSS)
Neither product is a tax engine. chainkit renders merchant-configured tax math; consult your accountant.
Privacy + compliance
- Customer PII redaction endpoint (GDPR "forget")
- EU-based hosting + processor
Ready to plug it in?
Start freeThis page summarises Blockonomics's published pricing and SDK surface as of our last review. Their docs are the canonical source — verify before you make a switching decision. See all comparisons, or jump to vs OpenNode and vs Coinbase Commerce.