Glossary

Definitions for the terms used across Titan Locker and Robinhood Chain — scoped to what we actually build, not a general blockchain dictionary. Each term links to the page that explains it in full.

Last reviewed 2026-07-15

Token Lock: A smart contract that holds a specific ERC-20 token balance until a public, on-chain unlock time, with no admin override or early-withdraw path. Only the lock's owner can withdraw, and only after the unlock time passes. What is a token locker? →
Liquidity Lock (LP Lock): Locking the LP tokens received from providing liquidity to a pool, so the underlying liquidity can't be withdrawn until the unlock time. This is the standard on-chain proof that a project can't pull its own liquidity. What is liquidity locking? →
LP Token: A fungible ERC-20 token minted by a Uniswap V2-style pool representing a liquidity provider's share of that pool. Whoever holds the LP token can redeem the underlying liquidity, which is exactly why locking it locks the liquidity. Locking LP tokens →
Uniswap V3/V4 Position (Position NFT): A non-fungible token representing one specific concentrated-liquidity position - its own price range and fee tier - on Uniswap V3 or V4. Unlike a V2 LP token, it can't be a fungible balance because two positions with different ranges aren't interchangeable. Locking Uniswap V2, V3, and V4 liquidity: what's actually different →
Position Manager: The Uniswap contract (NonfungiblePositionManager for V3, PositionManager for V4) that mints, holds metadata for, and manages concentrated-liquidity position NFTs. Titan Locker only locks positions from position managers it has explicitly allowlisted. Titan Locker contracts →
Token Vesting: Releasing a token grant gradually over time - linearly between a start and end date, with an optional cliff - instead of unlocking the full amount at once. Once created, a vesting schedule is irrevocable. How token vesting works →
Cliff (Vesting Cliff): A period at the start of a vesting schedule during which nothing is claimable at all. When the cliff date passes, everything accrued up to that point becomes claimable at once, and linear vesting continues from there. Cliff vs. linear vesting explained →
Linear Vesting: Releasing a token grant continuously and proportionally between a start and end date - an equal share vests for every unit of time that passes, rather than all at once on a single date. Cliff vs. linear vesting explained →
Lock Certificate: The public, shareable page for a single lock (at /lock/{id} or /lock/v2/{id}) that reads the token, amount, owner, and unlock time directly from the chain - not from a database Titan Locker controls, so it can be verified independently. How investors verify a token or liquidity lock →
Immutable Contract: A smart contract with no upgrade mechanism (no proxy, no admin-controlled logic swap) - once deployed, its rules can never change. Titan Locker's lock contracts are immutable, so no unlock time or ownership rule can be altered after the fact. Fees & security →
Non-Custodial: Describes a system where the operator never holds or controls user funds - only the lock's own owner can move its assets, and only under the rules the contract enforces. Titan Locker never has custody of any locked token or position. Fees & security →
Per-Lock Isolation: Titan Locker's design of deploying a fresh, isolated child contract for every single lock, holding exactly one asset. Because no lock's contract ever holds another lock's funds, one lock's bug or compromise can never reach another lock. Titan Locker contracts →
Lock Owner: The address entitled to withdraw a lock's assets (after unlock) or claim a vesting grant's releasable amount. Ownership is on-chain and transferable, independent of whichever address originally created the lock. Managing & withdrawing a lock →
Unlock Time: The on-chain timestamp before which a lock's assets cannot be withdrawn under any circumstance. It can be pushed later after creation, but a lock contract will reject any attempt to move it earlier. How to lock tokens on Robinhood Chain →
Fee-on-Transfer Token: A token that deducts a fee on every transfer, so the amount received is less than the amount sent. Locking one means the locked balance is whatever the contract actually received, not necessarily the number typed into the create flow. How to lock tokens on Robinhood Chain →
Rug Pull: When a token team removes liquidity or dumps a large token allocation, crashing the price for other holders. Locking liquidity and vesting team allocations are the two most direct on-chain countermeasures, since both remove the ability to do so before an agreed date. Robinhood Chain token launch guide →
Archive Node: A node that retains the full historical state trie at every past block, letting it answer queries about any prior point in chain history. Block explorers, indexers, and historical analytics tooling are typically built on archive nodes. Archive node vs. full node: why the difference matters →
Full Node: A node that keeps the complete block and transaction history plus enough recent state to validate new blocks and serve current on-chain reads. It's what most wallets, dApps, and RPC endpoints run on, and it's enough for anything that only needs the current state. Archive node vs. full node: why the difference matters →
RPC Node / RPC Endpoint: A node exposing its JSON-RPC interface so wallets and dApps can query it - send transactions, read state, subscribe to logs. Robinhood Chain's public RPC is https://rpc.mainnet.chain.robinhood.com; it can be backed by a full or archive node depending on what it needs to serve. Archive node vs. full node: why the difference matters →
Chain ID: The numeric identifier an EVM-compatible chain uses to distinguish itself from every other chain, used in transaction signing and wallet network configuration. Robinhood Chain's chain ID is 4663. Titan Locker contracts →
Robinhood Chain: An Arbitrum Orbit chain built on Arbitrum's Nitro stack, running under chain ID 4663, and the network Titan Locker is deployed on. Titan Locker: the token & liquidity locker for Robinhood Chain →
Blockscout: Robinhood Chain's block explorer, where every Titan Locker contract is independently verified - meaning anyone can read the exact deployed source code rather than trusting a description of what it does. Titan Locker contracts →