Katomia

Create your own circle

Sets the colours players are dealt. More theming to come.

Initiate swaps once agreed between...

When a group locks a deal, it moves to its own side circle to settle — this circle stays open for everyone else.

Leave blank to allow anyone. Or restrict who can take part with a comma-separated list of Hedera account IDs and/or token IDs (0.0.123, 0.0.456). A token ID admits anyone holding at least one of that token — so an NFT collection or community token works as a membership pass. Matching any one entry is enough; players prove ownership by connecting and authenticating their account.
💡 Humans only? Gate on a token that is only ever issued to verified people — any third-party proof-of-personhood token works as the pass.
Admin ID (optional)
Hedera account or public key. Leave blank to prevent any later edit or deletion.
Welcome message (optional)
Shown once to each player as they join, from Katomia, visible only to them. Leave blank for the default greeting.

A player who has done nothing for this long has their accounts, assets and offers swept off the board. Players with an open connection never count as inactive, and a circle is skipped entirely while a transaction is mid-signing.

Delay transaction start (seconds)
Valid duration (seconds) — the window, starting at the transaction's timestamp, within which a consensus node will still accept it once submitted. Nothing is "on-chain" before submission; this just sets how late a signed transaction can still be sent in. Hedera's own default is 120s; shorter is handy for fast tests and for signers who don't want to hang around. Hedera accepts 15–180s — values outside that are rejected by the network itself (INVALID_TRANSACTION_DURATION), so out-of-range input is clamped.
🔗 Copy this setup as a template link