Scheduled maintenance is currently in progress. We will provide updates as necessary.
Posted Jul 14, 2026 - 00:00 UTC
Scheduled
We are upgrading our Hedera Mainnet and Testnet Mirror Node infrastructure to v0.159.0.
This release includes all changes from v0.158.0 and v0.158.1 in addition to new fixes and improvements. Key updates include support for state overrides in the /api/v1/contracts/call REST API, corrections to contract creation fee errors, staking reward calculations, and synthetic log transaction hash records, along with query performance improvements.
During the maintenance window, brief interruptions to RPC availability may occur.
RPC Changes: /api/v1/contracts/call — New state_overrides parameter now available (currently feature-flagged) to allow substitution of account balances, nonces, contract bytecode, and contract storage during call simulation.
Contract create — Fixed an issue causing INSUFFICIENT_TX_FEE errors on certain contract creation calls. Staking rewards — Fixed an issue where pending rewards were not reset to 0 once earned rewards fell outside the retention window. Transaction logs — Fixed missing transaction_hash entries for synthetic logs. OpenAPI spec — Updated to include the delegation_address field.