v1.2.0 Release Notes

Highlight - The first official release of Service Chain

We are pleased to announce that this version officially supports Service Chain.
Service Chain is Klaytn’s layer-2 solution designed to achieve horizontal scalability. Service chains run independently from the Klaytn main chain and can have own governance. To learn more about the Service Chain, please visit https://docs.klaytn.com/klaytn/scaling-solutions.

New Features

• Service Chain features
• Data anchoring: Service chain data can be anchored to a parent chain via ChainDataAnchoring transaction.
• Cross-chain value transfer: KLAY and KCT can be transferred between a service chain and a parent chain.
• High Availability: Multiple bridge nodes can be set up in an H/A configuration to reduce downtime due to accidental hardware/software failure.
• New APIs for Service Chain
• klay_getDecodedAnchoringTransactionByHash
• subbridge_getParentOperatorBalance
• subbridge_getChildOperatorBaalnce
• subbridge_getAnchoringTxHashByBlockNumber
• subbridge_getValueTransferOperatorThreshold
• subbridge_setValueTransferOperatorThreshold
• subbridge_registerOperator
• subbridge_getRegisteredOperators

Fixes

• Fixed a race condition in txpool.

Improvements

• Only unlocked tokens can be moved across chains.