bnb-chain/bsc - v1.7.3 New

Published: Apr 23, 2026

Release Summary

A new maintenance release, v1.7.3, is now available for the BSC node software. While not a mandatory update, it is highly recommended for all Mainnet and Testnet users to address an issue causing abnormal database size growth.

Key Fixes and Improvements

This release focuses on stability and performance, especially in light of the recent reduction in block time to 450ms.

BUGFIXES
This release contains crucial fixes for node operators:

Database Growth Fix: The primary issue of abnormal and continuous `kvdb` growth has been resolved. With the 450ms block interval, the chain was producing blocks faster than the freezer could process them. The freezer batch limit has been increased from 100 to 200, allowing it to keep pace with chain growth and stop the indefinite accumulation of old blocks in LevelDB.
Block Pruning Fix: A bug that impacted online block pruning has been corrected, restoring the proper function of ancient data pruning for nodes with this feature enabled.
Consensus & VM Fixes: Includes fixes for a potential deadlock in the votepool when a client is stopped, corrected a pointer comparison in the Parlia consensus logic, and resolved a minor VM instruction comparison bug.

FEATURES
A significant quality-of-life update for archive node operators:

Improved Archive Node Sync Status: The `eth_syncing` RPC call will now return `false` as soon as an archive node has finished syncing blocks and state. It no longer waits for the full historical transaction indexing to complete, a process that could take days or weeks. This means archive nodes will report as fully synced much faster while still indexing historical transactions in the background.

IMPROVEMENTS
Performance has been enhanced with the following changes:

Optimized for 450ms Block Times: Network timing parameters and broadcast queues have been fine-tuned to better handle the faster block interval, improving block propagation efficiency.
Faster Blob Validation: Blob transaction validation is now performed asynchronously during bid simulation, which can help absorb the verification cost and speed up the process for validators.
Security Hardening: The Data Availability (DA) check now uses the node's local system time instead of a timestamp from peers. This mitigates a potential security risk where a malicious peer could influence the check by providing a false future timestamp.
Miner Efficiency: The greedy merge buffer was adjusted to better accommodate the faster block times, increasing the likelihood of including competitive bids and improving overall miner/validator efficiency.

Release Notes

## MetaInfo

Mandatory Update Required: NO — recommended to fix the database size growth issue
Target Audience: All BSC Mainnet and Testnet users
Procedure: Binary replacement is sufficient from v1.7.x
Schedule(Timeline): No scheduled rollout


## Changelog

v1.7.3 is a maintenance release, which mainly fixes online block pruning and kvdb abnormal continuous growth, pls refer change log for detail.

### BUGFIX
- [#3653](https://github.com/bnb-chain/bsc/pull/3653) core/rawdb: fix freeze header-number shadowing for block prune
- [#3633](https://github.com/bnb-chain/bsc/pull/3633) core/rawdb: increase SlowFreezerBatchLimit from 100 to 200, fixing kvdb abnormal continuous growth
- [#3631](https://github.com/bnb-chain/bsc/pull/3631) core/vote: fix deadlock in votepool when stop client
- [#3627](https://github.com/bnb-chain/bsc/pull/3627) core/vm: fix super-instruction LT comparison after swap1
- [#3652](https://github.com/bnb-chain/bsc/pull/3652) consensus/parlia: fix big.Int pointer comparison in isIntentionalDelayMining

### FEATURE
- [#3624](https://github.com/bnb-chain/bsc/pull/3624) cmd/utils: disabled transaction unindexing for archive node by default; when running in archive mode, the `--history.transactions` flag is now respected to specify transaction history range instead of being forced to index all history
- [#3634](https://github.com/bnb-chain/bsc/pull/3634) eth/ethconfig: set default value to 576000 for history.logs

### IMPROVEMENT
- [#3626](https://github.com/bnb-chain/bsc/pull/3626) eth: tune timing parameters and broadcast queue for 450ms block
- [#3618](https://github.com/bnb-chain/bsc/pull/3618) [#3629](https://github.com/bnb-chain/bsc/pull/3629) miner: async blob tx validation during bid simulation with worker pool
- [#3650](https://github.com/bnb-chain/bsc/pull/3650) miner: shrink greedy merge buffer
- [#3645](https://github.com/bnb-chain/bsc/pull/3645) core: use now for DA check instead of chasingHead.time
- [#3622](https://github.com/bnb-chain/bsc/pull/3622) core/vm: continue after super-instruction fallback

### Others
- [#3639](https://github.com/bnb-chain/bsc/pull/3639) go.mod: use go1.25.0 and update otel
- [#3637](https://github.com/bnb-chain/bsc/pull/3637) build(deps): bump go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp from 1.34.0 to 1.43.0
- [#3617](https://github.com/bnb-chain/bsc/pull/3617) build(deps): bump github.com/mattn/go-colorable from 0.1.13 to 0.1.14
- [#3616](https://github.com/bnb-chain/bsc/pull/3616) build(deps): bump github.com/gorilla/mux from 1.8.0 to 1.8.1
- [#3648](https://github.com/bnb-chain/bsc/pull/3648) Revert ".github: change dependabot target branch to develop"



## Assets

|    Assets    | Sha256 Checksum  |
| :-----------: |------------|
| mainnet.zip | 522cb9902437df2368008b28bebb6b5c35ec026bf2ec41af40117ff507f53fa7 |
| testnet.zip | 0d9de8b7f1bafc36711eed80e97bf33f906fadc2ceb5457361645941d7ad19f7 |
| geth_linux | 8b35f4ac758807db96f3566a86eef7d85d86b4193f2594511fac757709fef274 |
| geth_mac  | ab956d653a3361f9772e8c7ecacc7f2f56a9ae8f1708841e59a85269854a5fd6 |
| geth_windows  | fc1dee6e0f46cf13f2b7faef025912da0c98d06e756e2ad50960a5035f7bb8ef |
| geth_linux_arm64  | dbf44026031e12e6ddc8b70e0f6e6fd9b14c587666f9623a7fd0b211cc2ded4e |

Links

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