Payment solution

Blink: crypto payment solution

The verdict

Wallet-based acceptance Merchant-ready Light operational setup Not recommended for most small merchants

Blink is a polished custodial Lightning wallet with a genuinely easy merchant Cash Register, but its own FAQ excludes US and Puerto Rico merchants, so for our audience it is not usable today.

Who holds the funds
Provider-custodied
Who holds the keys
Provider
Self-hosting
Not required (hosted)
Lightning
Yes
Fiat settlement
No
Bank settlement
No

Best for: Non-US merchants wanting a fast, no-infrastructure Lightning Cash Register and a Bitcoin (or synthetic-dollar) balance.

Poor fit: US and Puerto Rico merchants (unsupported), and anyone needing real bank-dollar settlement or built-in refunds.

Biggest tradeoff: Blink gives a non-US merchant a zero-infrastructure Lightning register, a Lightning address, a printable static Paycode, and an API, at no service fee on Lightning. The tradeoffs are custody (Blink holds funds by default), no built-in refunds, and a Dollar balance that is synthetic, not bank dollars.

Confidence: High Last reviewed 2026-07-11

What it is

Blink is a custodial Bitcoin and Lightning wallet, grown out of the Bitcoin Beach project, with a zero-infrastructure merchant Cash Register (a hosted register at pay.blink.sv/username), a Lightning address, a printable static Paycode, and an API. The underlying Galoy stack is open-source and self-hostable by others.

What it is not

It is not available to US or Puerto Rico merchants (Blink's own FAQ lists them as unsupported). Its Dollar balance is synthetic USD (via Stablesats), not bankable dollars and not a fiat off-ramp. The register is receive-only, so it is not a full POS with refunds.

How the payment flow works

A merchant signs up (phone number, no KYC), shares their Blink Cash Register link or Lightning address or Paycode, and receives Lightning payments instantly into a custodial balance held in Bitcoin or synthetic dollars. Funds can be swept to self-custody while the service runs.

Custody, keys, and settlement

The most important thing about any crypto payment solution is who controls the money and what happens if the provider goes away. Here is the structured answer, from primary sources.

Custody
Provider-custodied
Key control
Provider
Fiat settlement
No
Bank settlement
No
Settlement timing
Instant
Settles in
Configurable
Backup and recovery
Provider

Conversion: Blink's Dollar balance is synthetic USD (a Bitcoin perpetual-inverse swap via Stablesats), not bankable dollars and not a fiat off-ramp. A non-custodial Spark option was added in June 2026.

Getting your money: Funds are custodial by default (multisig cold storage); a merchant can withdraw to self-custody at any time while the service runs. Access depends on Blink.

If the provider or hosted service becomes unavailable

Withdrawing funds depends on provider access.

Blink is custodial, so access depends on Blink and account standing. A merchant can withdraw to self-custody while the service runs, which reduces exposure, but there is no independent access once funds sit in the custodial balance.

What you have to operate

Almost nothing: a hosted Cash Register and your account. No server or node. Sweeping to self-custody is your choice and your responsibility.

Ongoing maintenance: Light: manage the account and reconcile; sweep to self-custody as desired.

Support: Community channels (Mattermost/Telegram); no documented merchant SLA.

Who this is right for

A non-US merchant, especially a small or Bitcoin-forward one, who wants the fastest possible Lightning register with no infrastructure, and who is comfortable with custody and a synthetic-dollar balance.

Who should skip it

US and Puerto Rico merchants (unsupported), and anyone who needs real bank-dollar settlement or built-in customer refunds.

Our evaluation

Money and control

Who holds your money and keys, whether you get dollars, and what happens if the provider goes away.

What we evaluate Rating Why Confidence
Custody model Who holds your money between the sale and settlement, you or a third party. Fair Custodial multisig cold storage by default; a June 2026 non-custodial Spark option exists but is partly closed-source. High
Settlement Whether you get dollars, crypto, or a choice, and when. Fair Instant to a Blink balance (BTC or synthetic USD), but there is no fiat or bank settlement. High
Fiat support Whether you can price and settle in dollars cleanly. Poor The Dollar balance is synthetic USD via Stablesats, not bankable dollars and not an off-ramp. High
Refunds Whether you can refund a payment, and how. Never inferred from an API. Poor No POS refund exists; the register is receive-only, so a refund is a manual send-back. High
Security model What you are trusting and what your exposure is: keys, custody, attack surface. Good Custodial multisig cold storage with asserted audits; custodial key-holders are not named. Medium

Operations

What running this actually takes day to day, and whether it produces records your books can use.

What we evaluate Rating Why Confidence
Hosting requirements Whether you have to run a server or a node. The biggest burden divider. Excellent Zero infrastructure: the Cash Register is a hosted web app at pay.blink.sv/username. High
Ease of setup Honest effort to go live, not marketing easy. Excellent Sign up, share a username link, and take Lightning payments in minutes. High
Accounting and records Whether it produces records your books and CPA can use. Not confirmed POS reports are claimed but CSV or accounting export is not documented. Low
Employee workflow What your staff actually have to do, and whether multiple users are supported. Fair A shareable staff link exists, but there are no per-staff roles or permissions. Medium
Merchant support Who helps when it breaks, and how good that help is. Poor Only community channels are documented; no merchant support tier or SLA. Medium
Offline capability Whether it works when the internet or a node is down. Not confirmed The POS is web-based; no offline mode is documented. Low

Technical capability

What the solution can actually do: Lightning, on-chain, stablecoins, and how extensible it is.

What we evaluate Rating Why Confidence
Lightning support Whether you can take Lightning, and what that requires operationally. Excellent Lightning is core: Lightning address, LNURL, printable Paycode, intraledger, all at 0% service fee. High
On-chain support Whether you can take on-chain, with what confirmation and fee reality. Good On-chain send and receive with transparent fixed fees. High
Open source Whether you can inspect and self-host it, and whether it is actively maintained. Good The Galoy/Blink stack is MIT and self-hostable; the new Spark non-custodial piece is partly closed. High
Operational maturity Whether this is a stable product or an early project. Good Grew out of Bitcoin Beach; an active project with a maintained monorepo. High
Developer ecosystem Whether you can extend it if you need to. Mostly for infrastructure and API-first tools. Good An API with Read/Receive/Write scopes, six webhook events, and a BTCPay Server plugin. High

Cost, clarity, and privacy

What it really costs all in, how clearly that is disclosed, and what using it reveals.

What we evaluate Rating Why Confidence
Fees What it really costs, all in, and how transparent that cost is. Excellent 0% service fee on intraledger and Lightning, transparent on-chain fees, and a 0.35% USD conversion spread. High
Documentation quality Whether a merchant can actually learn to run this. Good A clear FAQ and dev docs, though pricing pages 404 and the help center had a TLS error. Medium
Privacy What using this reveals, and to whom: address reuse, KYC, on-chain linkage. Good No KYC (phone number only); custodial data is held and synthetic-USD counterparty is undisclosed. Medium

We rate each area on its own. There is no overall score, because averaging areas this different, a self-hosted server's independence against a gateway's convenience, would hide the tradeoff you need to see. How we rate.

Pricing

Setup
$0
Transaction fee
0% on Lightning/intraledger (service fee; network fees on-chain)
Conversion fee
0.35% (BTC to synthetic USD spread)
Network fee
Transparent fixed on-chain fees

Blink charges no service fee on Lightning and intraledger payments, transparent fixed on-chain fees, and a 0.35% spread for the synthetic-dollar conversion. Pricing pages 404'd; fees are from the FAQ. Last verified 2026-07-11.

Limitations

  • Not available to US or Puerto Rico merchants.
  • Custodial by default; you do not hold the keys unless you use the newer Spark option.
  • The Dollar balance is synthetic USD, not bankable dollars and not a fiat off-ramp.
  • No built-in customer refund; the register is receive-only.
  • No per-staff roles; only a shareable staff link.
  • Community-only support; no merchant SLA.

What we are still verifying

We publish what our documentation review supports and mark the rest as unverified. These questions are open. We will answer them with hands-on testing before we treat them as fact.

Open questionCurrent confidence
How is the US exclusion enforced, and what about existing or traveling US users? Low
In which regions is the synthetic-dollar (Stablesats) balance available? Low
What is the exact manual refund procedure and its record-keeping? Low

How is the US exclusion enforced, and what about existing or traveling US users?

Why it matters: Determines whether any US merchant path exists at all; the FAQ states exclusion but not enforcement.

Planned lab validation: Test signup and geoblock behavior from the US.

In which regions is the synthetic-dollar (Stablesats) balance available?

Why it matters: Availability varies by country and the counterparty is undisclosed.

Planned lab validation: Confirm Stablesats availability per region.

What is the exact manual refund procedure and its record-keeping?

Why it matters: Refunds are a core merchant need and there is no built-in feature.

Planned lab validation: Perform a manual send-back refund and document it.

CryptoLic Lab

CryptoLic does not stop at reading documentation. We independently validate what vendors claim by setting things up and running them ourselves, then we publish what we actually observed. For this solution, that hands-on validation is not scheduled. Nothing below is marked verified until we have tested it, so you can trust a "verified" label when you eventually see one.

What we will verifyStatus
US geoblock and signup behavior Pending verification
Cash Register acceptance end to end Pending verification
Synthetic-dollar balance behavior and regions Pending verification
Manual refund procedure Pending verification
POS reporting and export depth Pending verification
Keeping the books straight?

Whichever solution you choose, the crypto has to reconcile against your books. The The Merchant Accounting & Bookkeeping Toolkit gives you a routine and a clean year-end package for your CPA.

Sources and verification

Last content review 2026-07-11 Documentation verified

Custody
2026-07-11
Settlement
2026-07-11
Pricing
2026-07-11
Availability
2026-07-11
Kyc
2026-07-11
Supported assets
2026-07-11
Integrations
2026-07-11
Refunds
2026-07-11
Open source
2026-07-11
Content reviewed
2026-07-11
Editorial update
2026-07-11

How we verify and date facts.

  • Blink Blink · Checked 2026-07-11 Supports: Blink is a Bitcoin/Lightning wallet with merchant tools
  • Blink FAQ Blink · Checked 2026-07-11 · ex-US Supports: US and Puerto Rico unsupported; no KYC (phone only); support channels
  • Blink FAQ: custody Blink · Checked 2026-07-11 Supports: Custodial multisig cold storage by default
  • Blink FAQ: Stablesats/Dollar Blink · Checked 2026-07-11 Supports: Dollar balance is synthetic USD via Stablesats, not bank dollars
  • Launching Non-Custodial Accounts Blink · Checked 2026-07-11 Supports: Non-custodial Spark accounts launched June 2026
  • Blink FAQ: transaction fees Blink · Checked 2026-07-11 Supports: 0% Lightning/intraledger service fee; on-chain fees; 0.35% USD spread; POS receive-only
  • Blink Cash Register / POS Blink · Checked 2026-07-11 Supports: Cash Register at pay.blink.sv/username; Lightning address; printable Paycode; shareable staff link
  • Blink API docs Blink · Checked 2026-07-11 Supports: API with Read/Receive/Write scopes, webhooks, BTCPay plugin
  • blinkbitcoin/blink (GitHub) GitHub/Blink · Checked 2026-07-11 Supports: Galoy/Blink stack is MIT and self-hostable; active monorepo

Change log

  1. 2026-07-11 Initial publication. Documentation review complete; flagged not available to US merchants; synthetic-USD and receive-only facts foregrounded.

Spotted something out of date? Send a correction. We verify every submission against primary sources; vendor contact never changes a rating.

Questions

Can a US business use Blink?

Not per Blink's own FAQ, which lists the United States and Puerto Rico as unsupported. For US merchants it is not a usable option today, which is why we flag it and do not recommend it for our audience.

Is Blink's Dollar balance real dollars in a bank?

No. The Dollar balance is synthetic USD created with a Bitcoin perpetual-inverse swap (Stablesats). It behaves like a dollar-denominated balance inside Blink, but it is not bankable dollars and there is no fiat off-ramp.

Can I refund a customer through Blink?

Not with a built-in feature. The Cash Register is receive-only, so a refund would be a manual send-back that you initiate yourself. We will document the exact procedure when we lab-test it.

How this compares

Every solution we cover is evaluated the same way. Here is where the others land.

SolutionCategoryReadinessThe short version
Zeus Wallet-based acceptance R3 Workable with effort Zeus is a self-custodial Lightning wallet and node-control app with a point-of-sale mode: you hold the keys, and how much you operate depends on whether you point it at your own node or use its embedded one.
OpenNode Custodial gateway R4 Merchant-ready OpenNode is a finished, hosted Bitcoin and Lightning gateway that can auto-convert to dollars and settle to a US bank, in exchange for the provider holding your funds and gating bank payout behind approval.

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