Execution Layer
The execution layer is the part of a blockchain architecture that processes transactions, runs smart-contract code, updates application state, and exposes execution…
Glossary terms starting with E
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Execution Risk
Execution risk is the possibility that an approved transaction, strategy, control, or operational action is implemented incorrectly, late, or incompletely. Decision-makers use…
Execution Scalability
Execution scalability is a blockchain system’s ability to process more transactions, smart-contract operations, or state transitions without unacceptable increases in cost, latency,…
Execution Sharding
Execution sharding divides blockchain transaction processing and state across shards so different node groups can execute workloads in parallel. The design creates…
Expected Amount
Expected amount is the quantity a payment system requires the payer to deliver for a specific payment session after pricing and conversion…
Expired Invoice
An expired invoice is an invoice whose allowed payment or acceptance period has ended. The commercial obligation can still exist, but the…
Expired Invoice Payment
An expired invoice payment is a transfer associated with an invoice after its payment window or exchange-rate quote has ended. The blockchain…
Expired Payment
An expired payment is a payment request or attempt that exceeded its permitted completion window before satisfying the acceptance rules. The related…
Expiring Crypto Payment Link
Expiring Crypto Payment Link is a crypto payment link that becomes invalid or changes behavior after a defined expiration time. Expiration limits…
Exponential Backoff
Exponential Backoff is a retry strategy that increases the delay between consecutive attempts, usually by multiplying the prior delay and adding random…
Extended Private Key (xprv)
Extended Private Key (xprv) is a BIP32 hierarchical deterministic wallet key that combines a private key with chain code and derivation metadata,…
Extended Public Key (xpub)
Extended Public Key (xpub) is a BIP32 hierarchical deterministic wallet key that combines a public key with chain code and derivation metadata,…
Extended UTXO (EUTXO)
Extended UTXO, or EUTXO, is an accounting model that extends the traditional unspent transaction output model with richer scripts and data attached…
External Attack Surface Management (EASM)
External Attack Surface Management (EASM) is the continuous discovery and risk management of internet-visible assets, services, domains, cloud resources, certificates, and exposures…
External Audit
An External Audit is an independent examination performed by a party outside the organization against defined financial, control, compliance, security, or contractual…
External Block Builder
An external block builder is a specialized party or service that constructs a candidate block or execution payload separately from the validator,…
External Payout
An external payout sends funds or assets from a platform or business balance to a destination outside the provider's internal ledger. The…
Externally Owned Account (EOA)
An externally owned account, or EOA, is an Ethereum-style account controlled directly by a private key rather than by smart-contract code. An…
Externally Owned Account Wallet
An externally owned account wallet controls a blockchain account directly through a private key rather than programmable smart-contract authorization logic. The record…