Signature Aggregation
Signature aggregation is a cryptographic technique that combines multiple signatures into a smaller aggregate proof that can be verified against multiple public…
Glossary terms starting with S
Numbers and symbols are grouped under #. Letter matching ignores case and uses the first displayed title character.
Signature Hash
A signature hash is the digest or signing preimage derived from transaction or message data and then authorized by a digital signature.…
Signature Policy
A signature policy defines who may sign, what they may authorize, under which conditions, and how signatures are verified and recorded. Signature…
Signature Request
Signature Request is an API identity or security mechanism that asks a user, wallet, key service, or cryptographic module to sign defined…
Signature Scheme
A signature scheme is the complete set of algorithms and rules used to generate keys, sign messages, and verify digital signatures. It…
Signature Subscription
Signature Subscription is a Solana WebSocket RPC subscription that sends status notifications for one specified transaction signature until a terminal confirmation notification…
Signature Verification
Signature verification is the cryptographic process of checking whether a digital signature is valid for a specific message and public key under…
Signed Transaction
A signed transaction is a transaction that includes the cryptographic authorization required by its protocol or account policy. The signature proves control…
Signing
Signing is the use of a cryptographic secret or signing authority to produce a digital signature that authenticates data and permits others…
Signing Key
Signing Key is a private key, key share, or controlled cryptographic object used to create digital signatures. It describes the key’s permitted…
Signing Policy
A signing policy defines the conditions, roles, limits, and evidence required before a cryptographic signing request may be approved and executed. Operational…
SIM Swap Attack
SIM Swap Attack is an account takeover attack in which a criminal causes a mobile carrier to transfer a victim’s phone number…
Simple Serialize (SSZ)
Simple Serialize is Ethereum consensus-layer serialization with deterministic encodings and Merkleization rules for specialized structured data and compact proofs. SSZ separates serialization…
Single-Asset Wallet
A single-asset wallet is a wallet designed to hold and transact one defined digital asset or one closely bounded asset type. For…
Single-Chain Stablecoin
A single-chain stablecoin is issued and officially supported on only one blockchain network. Its supply, transfers, and smart-contract behavior are contained within…
Single-Chain Wallet
A single-chain wallet supports accounts and transactions on one blockchain network rather than coordinating activity across several independent chains. The operating model…
Single-Round Fraud Proof
A single-round fraud proof lets a challenger demonstrate an invalid state transition through one non-interactive proof submitted for verification. Single-Round Fraud Proof…
Single-Transaction Multi-Invoice Payment
Single-Transaction Multi-Invoice Payment is one blockchain transaction whose received value is intentionally or operationally allocated across two or more invoice obligations. In…
Single-Use Address
Single-Use Address is an address policy under which a receiving address should be used for only one incoming transfer or one defined…
Single-Use Crypto Payment Link
A single-use crypto payment link is a checkout URL intended to complete one payment only. It points to a payment session with…
Slashing Risk
Slashing risk is the possibility that staked assets are penalized or destroyed because of prohibited, faulty, unavailable, or conflicting validator behavior. A…
Slippage
Slippage is the difference between an expected transaction price or amount and the actual result received when execution completes. A displayed quote…
Slippage Risk
Slippage risk is the possibility that a trade or conversion executes at a worse price than expected because market conditions change. Decision-makers…
Slippage Tolerance
Slippage Tolerance is the maximum adverse difference between an expected or quoted trade outcome and the execution outcome that a trader or…