From cost-center to revenue-driver — compliant payments built for digital asset custodians

Notabene connects custody providers to thousands of regulated counterparties, automating Travel Rule compliance on every withdrawal and enabling your customers to create and pay business invoices with stablecoins directly from their custody account.

$2.5T+

in transactions processed

2,100+

regulated counterparties on network

100+

jurisdictions covered

Sub-second transaction processing

Our partners
Bitso logoBorderless logoBorderless xyz logoWalapay logoGnosis logoMonerium logoOrbital logoPortal logoYellow Card logoZodia logoFlutterwave logoDfns logo

One integration replaces hundreds of bilateral connections

Your clients initiate outbound transfers. You control the keys and execute the transaction — which means Travel Rule obligations are yours. Notabene automates the counterparty data exchange with every institution on the network, so withdrawals go through instead of into a manual review queue.

Automated Travel Rule on every withdrawal

Every client-initiated outbound transfer is compliance-checked before it goes on-chain. Counterparty identification, data exchange, and policy evaluation happen automatically — no analyst intervention required for standard transactions.

Verified inbound asset receipt

Assets arriving from external sources are identified and verified before you credit client accounts. Know the sending institution and originator before the transaction settles — not after.

Earn as a Responding Agent on Flow

Let clients pay invoices directly from their custody account through the Flow network. No withdrawal required. You settle the payment as a Responding Agent and earn 76.5bps on every transaction.

How custodians use Notabene

01

Integrate once

A single API integration covers Travel Rule compliance for all outbound transfers and inbound asset receipt.

02

Withdrawals go through

Before any transaction hits the chain, Notabene identifies the beneficiary institution, exchanges required data, and confirms compliance. Automatically.

03

Inbound transfers verified

Assets arriving from external sources are matched to a sending institution and policy-checked before client accounts are credited.

04

Clients pay from custody

Flow lets your business clients pay invoices directly from their custody account. You settle the payment as a Responding Agent and earn fees on it.

05

Power other participants

Act as the custody and settlement layer for PSPs and banks joining the Flow network, creating a new B2B revenue stream on your existing infrastructure.

Built for institutional custody workflows

Institutional Custodians

Automate compliance on all client withdrawals and inbound transfers. Replace manual review and one-off counterparty integrations with a single network connection that covers 290+ institutions.

Wallet Infrastructure Providers

Become the custody and settlement layer for other Flow participants. PSPs and banks joining the network need key management and settlement infrastructure — you provide it without building new bilateral relationships.

Business Account Providers

Your clients already use you as their stablecoin account. Flow gives you a real payment product to offer them — compliant invoice payments, verified counterparties, and pre-reconciliation built in.

Who builds on Notabene

Institutional custodians

Wallet infrastructure & MPC providers

Digital asset safekeeping services

Business crypto account providers

Built on an open protocol governed by community and code

Notabene is built on TAP—the open protocol for transaction authorization. It evolves through open contribution, enabling interoperable, programmable financial workflows across wallets, issuers, and platforms.

Learn more

No lock-in. No gatekeepers. Just open infrastructure.

Built on an open-loop network, Notabene coordinates compliant payments with maximum flexibility.

Open loop

No partner lock-in

Partner-first

You own the customer relationship

Interoperable

Works on any chain or with any digital asset

Connect your custody infrastructure to the network.
Connect to thousands of verified institutions. One integration. Compliance that scales with client volume.
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