A balance per currency
Six currencies, each its own wallet with its own reserves. Nothing is converted implicitly and nothing is pooled — what an account holds in one currency is never inferred from another.
Infrastructure · BankingHow BINK holds
How BINK holds
and moves money.
Underneath every product is the same arrangement: a balance per currency, a double-entry ledger those balances answer to, and typed accounts that money moves between. This page describes that architecture — and is equally plain about what BINK is not.
Anatomy of an account
BalanceWhat the account holds in that currency
ReservedCommitted against a pending authorisation
SavingsHeld against a savings goal, separately
CurrencyOne wallet per currency, never commingled
Currencies held
EGPUSDAEDEURGBPSAR
Availability depends on the account’s region. Balances are electronic money, not bank deposits.
CurrenciesSix, never commingled
AmountsIntegers, in minor units
PostingsBalanced before written
AccountsTyped, so money has a purpose
The stack
Four layers, all at once.
These are not steps. They exist simultaneously, one underneath the other — what a customer sees at the top, and the entries that make it true at the bottom.
Surface
The account a customer sees
One wallet per currency held, with the spendable figure distinct from what is committed against it.
EGPUSDAEDEURGBPSAR
Composition
What a balance is made of
A wallet is not a single number. Each part answers a different question, and they are tracked apart rather than netted.
BalanceReservedSavings held
Accounts
The chart money sits in
Internally, funds rest in named accounts, so any balance can be attributed to a purpose rather than to a total.
AvailablePendingReserveIn transitClearingSettlementChargeback reserveTreasury
Record
The entries underneath
Every movement is a posting of at least two legs whose debits and credits must be equal before it is written at all.
A movement
Account to account.
Every internal movement takes the same path, and every step of it can refuse. Nothing is written until the posting is proven to balance.
- AccountHolds a balanceOne wallet per currency, with its reserves tracked apart.
- ChecksRun firstCompliance state, risk evaluation and currency permission.
- PostingMust balanceDebits and credits are asserted equal before anything is written.
- BalancesFollowBoth sides update inside the same transaction, or neither does.
The boundary
What BINK is not.
A page called “banking infrastructure” invites assumptions. These are the ones worth correcting before anyone builds a plan on them.
Regulatory status is stated in BINK’s published policy and in your product terms. Those documents govern; nothing on this page qualifies them.
- Not a bank
- BINK does not take deposits and does not describe itself as a bank. Balances held with BINK are electronic money, not bank deposits, and are not covered by deposit guarantee schemes.
- Regulatory status
- BINK’s permissions, entities and regulatory position are stated on its compliance surface and in your product terms, which are the authoritative sources. They are not summarised or characterised here.
- No outbound rail
- Beneficiary details can be stored securely, but BINK does not operate an outbound bank rail today. Money moves between accounts on BINK; it is not sent to an external bank from this platform.
- No account issuance
- BINK does not issue IBANs or virtual account numbers. Where an account number is held, it belongs to a beneficiary you added, not to an account BINK created for you.
- No statements
- There is no bank-statement product. History is available as ledger and transaction records rather than as a statement in a banking format.
What the layer does
Precise about money.
The properties that decide whether a balance can be trusted: what it is made of, how it changes, and what had to be true before it did.
Reserves held apart
A pending card authorisation and a savings commitment reduce what is spendable without altering what is held. The three figures are tracked separately because they answer different questions.
Every movement balances
A posting must have at least two legs and its debits must equal its credits before it is written. An unbalanced entry is refused rather than corrected afterwards.
A typed chart of accounts
Money sits in named accounts — available, pending, reserve, in-transit, clearing, settlement, chargeback reserve and treasury — so a balance can always be attributed to a purpose.
Guarded before it moves
An internal transfer passes the account’s compliance state, a risk evaluation and a currency-permission check before any posting is attempted.
Beneficiaries encrypted
Account numbers are held under envelope encryption with versioned keys. Only the last four digits are ever displayed, and duplicates are detected by keyed hash rather than by storing the value in the clear.
Operational detail
How it behaves.
- Currencies
- Egyptian Pound, US Dollar, UAE Dirham, Euro, Pound Sterling and Saudi Riyal. Which are available to an account depends on its region.
- Minor units
- Balances are integers in the currency’s minor unit. No monetary value is stored or computed as a floating-point number.
- Atomicity
- A transfer’s debit, credit and resulting balances are written in one transaction. There is no window in which one side has moved and the other has not.
- Partner records
- An administrative console records the institutions BINK works with and their account details, with an audit trail. It is a register — it does not route or move money.
- Cross-currency
- Where a movement crosses currencies, the conversion is quoted and locked by the FX engine before the postings are made.
- Where money rests
- Ledger accounts describe BINK’s internal position. Statements about where customer funds are held externally belong to BINK’s published policy, not to this page.
Integration
What this looks like to build against.
Money handling is where imprecision becomes expensive, so the contract is deliberately literal about types, currency and what commits together.
- Amounts are integers
- Every monetary value is an integer in the currency’s minor unit. No balance is stored or computed as a floating-point number, so nothing accumulates rounding.
- Currency is explicit
- A wallet is identified by its owner and its currency together. There is no implicit conversion and no default currency to guess at.
- Spendable is derived
- What can be spent is the balance less what is reserved and held. The parts are exposed so you never have to infer the difference.
- Movements are atomic
- A transfer’s debit, credit and resulting balances commit together. There is no window in which one side has moved and the other has not.
In practice
What the structure is for.
Hold several currencies
Keep balances in each currency separately rather than converting on receipt, with nothing pooled or implicitly netted between them.
Reserve without deducting
Commit an amount against a pending authorisation so it cannot be spent twice, while what is held remains visible and distinct.
Attribute every figure
Answer where a balance sits — available, in transit, in reserve, in clearing — from the account it rests in, not from a report.
Store a beneficiary safely
Keep account details under envelope encryption with only the last four digits displayed, and detect duplicates without holding the value in the clear.
In the platform
What sits on top.
Infrastructure
Every surface.
RoutingHow a transaction is matched to a processor.FX engineRates, locked quotes and currency conversion.Real-time SettlementThe lifecycle from captured to settled.Liquidity networkPer-currency pools and the movements against them.ReconciliationChecks that the books agree with the ledger.Banking ·The regulated foundation the platform runs on.
Banking infrastructure
Every figure has an origin.
Integer balances, balanced postings, typed accounts, and a clear line around what this platform does and does not do.