What is GIWA?

GIWA is the blockchain GAMA runs on. It is an Ethereum layer 2 built by Dunamu, the company behind Upbit: it runs transactions itself, quickly and cheaply, and posts their data to Ethereum. GAMA uses GIWA's public test network, GIWA Sepolia.

GIWA Sepolia in brief

Network name	GIWA Sepolia
Chain ID	91342
Fees paid in	ETH (test ETH, which has no value)
A new block	about every second
Built on	the OP Stack, the same technology as Optimism and Base
Explorer	Gamascan, and GIWA's own explorer at sepolia-explorer.giwa.io

GIWA addresses look like Ethereum addresses (0x followed by 40 characters), and the same wallet works on both. GIWA has no gas token of its own: you pay network fees in ETH. On GIWA Sepolia that is test ETH, which you get for free. See Connect a wallet and get test ETH.

GIWA mainnet is in development and has no announced date. GAMA has no mainnet release.

Test ETH

Test ETH exists so that people can try GIWA, and apps such as GAMA, without risking real money. It has no value, and you never need to pay for it. Anyone who offers to sell you test ETH, or to swap it for something of value, is not to be trusted.

Every amount on GAMA, every token you buy and every reward you earn, is in test assets. The dollar figures GAMA shows are estimates worked out from test prices; they are not what anything is worth.

WARNING

No faucet, bridge or support person needs your private key or seed phrase. Anyone who asks for them is trying to empty your wallet.

How transactions reach GIWA

GIWA has no public waiting room for transactions (a mempool) where anyone can watch them. Your wallet sends each transaction straight to GIWA's sequencer, the service that puts transactions in order and builds the blocks. The sequencer confirms a new transaction within a fraction of a second and seals it into a block about a second later. Its data is then posted to Ethereum, and after roughly 16 minutes the block is final.

In practice this means:

• A trade is in a block about a second after GIWA receives it. GAMA's pages can take a few more seconds to show it.
• No one can see your pending transaction and jump in front of it. They can still react to transactions once they are in a block, which matters for large orders. See Price impact and sandwiches.
• A confirmed transaction cannot be reversed.

Gamascan's docs explain each stage in detail: Find your transaction and check it went through.

Fees on GIWA

Every transaction pays a small network fee in ETH, also called gas. It has two parts: a fee for running the transaction on GIWA, and a share of the cost of posting GIWA's data to Ethereum (the L1 data fee). A simple transfer costs about 0.00000003 ETH; a trade or a launch on GAMA uses more gas but still costs a tiny amount. A transaction that fails still pays its fee.

GAMA's own fees, such as the trading fee on a launch, are separate and are always shown before you confirm. See Fees and Gamascan's Gas and fees on GIWA.

Gamascan, the explorer

Gamascan, at gamascan.io, is the block explorer of the GAMA ecosystem. It shows every transaction, address, token and contract on GIWA Sepolia. Each View transaction link in the GAMA app opens the transaction on Gamascan, so you can check what happened: who sent what, which tokens moved, and the fee paid. For example, here is the buy that graduated the GAMA token in the current release.

Gamascan has its own documentation at docs.gamascan.io, with plain explanations of blocks, gas, approvals and bridging.

TIP

If a transaction does not appear in GAMA straight away, look it up on Gamascan first. If it is there, it went through, and GAMA's pages catch up within a few seconds. Do not send it again.

Related

• Connect a wallet and get test ETH
• What is GAMA?
• Getting test ETH onto GIWA (Gamascan docs)
• Gas and fees on GIWA (Gamascan docs)