- Asynchronous message
- How contracts on TON talk to each other. A contract sends a message and carries on; the reply arrives in a later block.
- Believers Fund
- A community smart contract in which large holders voluntarily locked about 1.3 billion coins in 2023. It began releasing them in October 2025.
- Catchain
- TON's Byzantine fault tolerant consensus protocol, designed by Nikolai Durov. Version 2.0 went live in April 2026.
- Custodial wallet
- A wallet where a company holds the keys for you, like a bank account. Easier to recover, but the company can freeze it or fail.
- Finality
- The point at which a transaction can no longer be reversed. On TON this is now about one second.
- Fragment
- A marketplace where Telegram usernames, anonymous numbers and collectible gifts are bought and sold for Gram.
- Formal investigation
- A stage of French criminal procedure (mise en examen) in which judges investigate a named person. It is not a conviction and may or may not lead to trial.
- FunC
- The original low-level smart-contract language for TON, now considered legacy.
- Giver contract
- The smart contracts that distributed TON's initial supply through proof-of-work mining between 2020 and 2022.
- Gram (GRAM)
- The native coin of The Open Network. Called Toncoin (ticker TON) from 2021 until 15 June 2026.
- Gram Wallet
- Telegram's own self-custodial wallet, built into the app and rolling out since 31 August 2026. Shown in the app as Money.
- Jetton
- TON's standard for tokens other than Gram, similar to ERC-20 on Ethereum. USDT on TON is a jetton.
- Liquid staking
- Staking through a protocol that gives you a tradable receipt token in return, such as tsTON from Tonstakers.
- Masterchain
- The coordinating chain. It stores network settings, the validator list and the latest block hashes of every shard.
- Memo / comment
- A short note attached to a transfer. Exchanges often require one to credit your deposit. Leaving it out can mean lost funds.
- Mini App
- A web app that opens inside a Telegram chat. Mini Apps that use a blockchain must use TON.
- Money (in Telegram)
- The label reported for the Gram Wallet section inside the Telegram app.
- MTONGA
- “Make TON Great Again”, the nickname for the seven-step plan Pavel Durov began publishing in April 2026.
- Nominator pool
- A smart contract that lets people who don't run a validator lend their stake to one and share the rewards.
- Proof of stake
- A way of securing a blockchain where participants lock up coins as collateral instead of burning electricity.
- SAFT
- Simple Agreement for Future Tokens, the contract type used in Telegram's 2018 Gram sale.
- Seed phrase
- The 12 or 24 words that control a self-custodial wallet. Anyone who has them has your coins.
- Self-custody
- Holding your own keys, so that no company can freeze or lose your coins on your behalf, and no company can recover them for you either.
- Shard
- A slice of a workchain that processes a subset of accounts in parallel. Shards split when busy and merge when quiet.
- Smart contract
- A program stored on the blockchain. On TON, every account, including every ordinary wallet, is a smart contract.
- Tact
- A higher-level smart-contract language for TON with a friendlier syntax.
- Telegram Open Network
- The original 2018 name of the project, when it was run by Telegram.
- Telegram Stars
- Telegram's in-app currency for digital goods, bought through app stores. Stars are not a cryptocurrency, though developers can convert them to Gram.
- The Open Platform
- The company, led by Andrew Rogozov, that builds Walt. It is separate from Telegram.
- Tolk
- The currently recommended language for writing TON smart contracts.
- TON
- The Open Network, the blockchain itself. Since June 2026 “TON” refers only to the network, not to the coin.
- TON Connect
- The standard way for a wallet to connect to an app on TON.
- TON DNS
- A naming system that maps readable names ending in .ton to wallet addresses and sites.
- Toncoin
- The previous name of Gram. Same coin, same balances, old label.
- TVM
- The TON Virtual Machine, the engine that runs smart contracts on TON. It is not compatible with Ethereum's EVM.
- Validator
- A computer that stakes Gram, takes part in consensus and produces blocks. Validators earn rewards and can be fined for poor performance.
- Walt
- The trading and investing mini-app formerly called Wallet in Telegram, renamed on 28 September 2026.
- Workchain
- A separate blockchain under the masterchain with its own rules. Today almost all activity happens on one workchain, often called the basechain.