Crypto Transactions
Accelerator Service
Accelerator Service is a third-party service claiming to speed confirmation — verify legitimacy and never share seeds.
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Crypto Transactions
Transaction hashes, fees, confirmations, memos, and network distinctions — confirmed is not the same as legitimate.
123 published definitions in this topic.
Back to glossaryShouldEye provides independent informational content based on public and third-party sources. Crypto assets, technologies, risks and regulations can change rapidly and may vary by network, platform and jurisdiction. A valid address, transaction or contract does not prove that a recipient, token or opportunity is legitimate. This is not legal, financial, tax, recovery or professional advice. See Legal Disclaimers
Crypto Transactions
Ancestor Fee
Ancestor Fee is fee accounting that considers a transaction together with its unconfirmed ancestors.
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Approve Transaction
Approve Transaction is a transaction granting a spender allowance over your tokens.
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Atomic Swap
Atomic Swap is a cross-asset exchange designed to succeed or fail together using cryptographic locks.
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Base Fee
Base Fee is a protocol-calculated fee component burned or required on some EIP-1559 style networks.
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Batch Transaction
Batch Transaction is a single transaction that performs multiple transfers or calls.
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Blind Signing
Blind Signing is approving a hash or opaque payload without understanding what it does — high risk.
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Blob Fee
Blob Fee is a data fee component on networks that post blob data for rollups.
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Block Confirmation
Block Confirmation is each additional block mined on top of the block containing your transaction.
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Block Time
Block Time is the typical interval between blocks on a network, affecting confirmation speed.
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Bonded Withdrawal
Bonded Withdrawal is an exit that requires posting a bond or waiting through a challenge period.
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Bridge Latency
Bridge Latency is delay between depositing on one chain and receiving representation on another.
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Bridge Transfer
Bridge Transfer is a deposit/withdraw flow through a bridge contract or lock-mint mechanism.
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Burn and Release
Burn and Release is bridging pattern that burns a representation to unlock the original asset.
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Cancel Transaction Pattern
Cancel Transaction Pattern is sending a zero-value self-transfer with the same nonce and higher fee to replace a pending tx.
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Canonical Bridge
Canonical Bridge is the official bridge for a rollup or chain pair, still carrying smart-contract risk.
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Canonical Transaction Ordering
Canonical Transaction Ordering is the ordered list of transactions a block commits to under consensus.
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Chain ID
Chain ID is an identifier included in signatures to bind transactions to a specific EVM chain.
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Change Output
Change Output is the leftover UTXO returned to the spender after paying a recipient and fees.
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Child Pays For Parent
Child Pays For Parent is a fee-bumping technique where a child transaction incentivizes mining the unconfirmed parent.
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Clear Signing
Clear Signing is hardware or wallet displays that show human-readable transaction details before approval.
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Cluster Analysis
Cluster Analysis is heuristics that group addresses potentially controlled by one entity.
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Compact Block Relay
Compact Block Relay is bandwidth-saving techniques for propagating blocks among peers.
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Confirmed Transaction
Confirmed Transaction is a transaction included in a block and buried under enough confirmations for a given risk level.
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Consensus Validation
Consensus Validation is checking that a transaction and block obey protocol rules before acceptance.
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Cross-Chain Transfer
Cross-Chain Transfer is moving value across chains using bridges or custodial conversions with extra risk.
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Cryptocurrency Transaction
Cryptocurrency Transaction is a signed ledger update that moves value or calls a contract on a blockchain.
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Custom RPC Risk
Custom RPC Risk is risk from malicious RPC endpoints that can censor, phish, or misreport chain state.
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Data Posting Cost
Data Posting Cost is the cost for rollups or apps to post calldata or blobs to a parent chain.
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Deposit Finalization
Deposit Finalization is crediting funds on an L2 after a base-layer deposit is observed.
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Deposit Transaction
Deposit Transaction is a send into an exchange or protocol deposit address awaiting credit.
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Descendant Fee
Descendant Fee is fee accounting including child transactions that depend on a parent.
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Double Spend Attempt
Double Spend Attempt is broadcasting conflicting transactions to try to spend the same funds twice.
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Dropped Transaction
Dropped Transaction is a transaction removed from mempools without confirmation, often due to low fees or replacement.
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Dust Output
Dust Output is an output so small it may be uneconomical to spend given fees.
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Economy Confirmation
Economy Confirmation is choosing lower fees and accepting longer waits for non-urgent transfers.
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Effective Gas Price
Effective Gas Price is the actual gas price paid after base fee and tip mechanics are applied.
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Escrow Transaction
Escrow Transaction is a conditional hold of funds via contract or multisig until release conditions are met.
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Event Log
Event Log is indexed data emitted by contracts that explorers use to show transfers and approvals.
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EVM Execution Trace
EVM Execution Trace is a step-level view of how a contract call executed, used in debugging and forensics.
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Failed Transaction
Failed Transaction is a transaction that was included but reverted, often still charging gas on smart-contract chains.
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Fee Bumping
Fee Bumping is increasing fees after broadcast so miners/validators prefer your transaction.
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Fee Rate
Fee Rate is fees per virtual byte or gas unit used to compete for block space.
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Force Close Channel
Force Close Channel is unilaterally closing a payment channel on-chain when counterparties disagree or are offline.
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Forced Transaction Inclusion
Forced Transaction Inclusion is mechanisms that let users bypass a censoring sequencer by posting to L1.
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Front-Running
Front-Running is inserting a transaction ahead of another based on seeing it pending, often for profit.
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Gas Fee
Gas Fee is the computational fee model used on many smart-contract networks.
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Gas Limit
Gas Limit is the maximum computation units a sender allows a transaction to consume.
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Gas Price
Gas Price is the price per gas unit offered by a sender under legacy fee markets.
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Hash Time Locked Contract
Hash Time Locked Contract is a contract pattern using hashlocks and timelocks for conditional payments.
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Inbound Liquidity
Inbound Liquidity is capacity to receive on a payment channel network.
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Inclusion Probability
Inclusion Probability is the chance a pending transaction is mined soon given its fee and network load.
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Input Data
Input Data is calldata attached to a transaction that encodes a contract function call.
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Internal Transaction
Internal Transaction is value movement triggered inside contract execution, sometimes shown separately in explorers.
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Invoice Payment
Invoice Payment is paying a Lightning invoice rather than a reusable on-chain address.
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Know Your Transaction
Know Your Transaction is compliance screening of transaction counterparties and histories.
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Layer Two Transfer
Layer Two Transfer is a payment executed on a rollup or channel system before or instead of base-layer inclusion.
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Lock and Mint
Lock and Mint is bridging pattern that locks assets on one chain and mints representations on another.
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Locked Balance
Locked Balance is funds temporarily unusable due to staking, vesting, escrow, or protocol locks.
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Max Fee
Max Fee is the maximum total fee per gas a sender is willing to pay under EIP-1559 style fields.
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