2.6.1-rc1

What's Changed

Added

• add byc and crt to default CAT list by @BrandtH22 in #20412
• [LABS-361] MIPS Python Drivers by @Quexington in #18686
• PoS2 integration [CHIA-3649][CHIA-3657][CHIA-3732][CHIA-3666] by @arvidn in #20414
• Use structured RPC errors in full_node_rpc_api by @judeallred in #20477

Changed

• Updated License by @ChiaAutomation in #20381
• CHIA-3867 Simplify TransactionQueue's put by @AmineKhaldi in #20392
• Explore bringing back v2 plot pool keys support by @AmineKhaldi in #20388
• [LABS-311] Extract track_new_launcher_id from dl_track_new by @Quexington in #20320
• CHIA-3856 Use an adapted version of deficit round robin algorithm in TransactionQueue's pop by @AmineKhaldi in #20351
• [LABS-302] Forward send_transaction and cat_spend to create_signed_transaction by @Quexington in #20321
• CHIA-3866 Prioritize trusted peers in FullNodeAPI's send_transaction by @AmineKhaldi in #20401
• [LABS-307] Extract manual syncing logic out of wallet RPC by @Quexington in #20318
• [LABS-294] Add kw_only to all wallet RPC types by @Quexington in #20324
• [LABS-312] Miscellaneous wallet RPC cleanups by @Quexington in #20325
• build(deps): bump boto3 from 1.41.4 to 1.42.30 by @dependabot[bot] in #20441
• build(deps): bump lodash from 4.17.21 to 4.17.23 in /build_scripts/npm_macos by @dependabot[bot] in #20430
• build(deps): bump diff-cover from 9.7.2 to 10.2.0 by @dependabot[bot] in #20418
• build(deps): bump pyinstaller from 6.16.0 to 6.18.0 by @dependabot[bot] in #20420
• build(deps): bump aiosqlite from 0.21.0 to 0.22.1 by @dependabot[bot] in #20378
• build(deps): bump pre-commit from 4.5.0 to 4.5.1 by @dependabot[bot] in #20379
• build(deps): bump aiohttp from 3.13.2 to 3.13.3 by @dependabot[bot] in #20384
• build(deps): bump anyio from 4.11.0 to 4.12.1 by @dependabot[bot] in #20404
• build(deps): bump tach from 0.32.0 to 0.33.0 by @dependabot[bot] in #20405
• build(deps): bump filelock from 3.20.0 to 3.20.3 by @dependabot[bot] in #20406
• build(deps): bump lodash from 4.17.21 to 4.17.23 in /build_scripts/npm_linux by @dependabot[bot] in #20426
• build(deps): bump lodash from 4.17.21 to 4.17.23 in /build_scripts/npm_windows by @dependabot[bot] in #20425
• build(deps): bump psutil from 7.1.3 to 7.2.1 by @dependabot[bot] in #20385
• build(deps): bump build from 1.3.0 to 1.4.0 by @dependabot[bot] in #20421
• build(deps): bump urllib3 from 2.6.0 to 2.6.3 by @dependabot[bot] in #20391
• build(deps): bump pip from 25.3 to 26.0 by @dependabot[bot] in #20461
• Run apt update before the apt install in install-timelord.sh to ensure package lists are up to date by @cmmarslender in #20471
• build(deps): bump packaging from 25.0 to 26.0 by @dependabot[bot] in #20469
• build(deps): bump setuptools from 80.9.0 to 80.10.2 by @dependabot[bot] in #20468
• build(deps): bump coverage from 7.12.0 to 7.13.2 by @dependabot[bot] in #20467
• build(deps): bump types-setuptools from 80.9.0.20250822 to 80.10.0.20260124 by @dependabot[bot] in #20466
• build(deps): bump tach from 0.33.0 to 0.33.1 by @dependabot[bot] in #20465
• build(deps): bump boto3 from 1.42.30 to 1.42.35 by @dependabot[bot] in #20464
• update the fast FullBlock parser by @arvidn in #20458
• build(deps): bump ruff from 0.14.6 to 0.14.13 by @dependabot[bot] in #20439
• build(deps): bump mypy from 1.18.2 to 1.19.1 by @dependabot[bot] in #20363
• Add unhide .venv step to install.sh on macOS by @matt-o-how in #20484
• CHIA-3883 Tolerate quote related cost mismatch for older nodes by @AmineKhaldi in #20462
• build(deps): bump cryptography from 46.0.3 to 46.0.5 by @dependabot[bot] in #20495
• build(deps): bump psutil from 7.2.1 to 7.2.2 by @dependabot[bot] in #20487
• CHIA-3887 Skip fetching additions and removals for non transaction blocks in FullNodeAPI's request_header_blocks by @AmineKhaldi in #20470
• build(deps): bump tach from 0.33.1 to 0.33.2 by @dependabot[bot] in #20492
• build(deps): bump boto3 from 1.42.35 to 1.42.40 by @dependabot[bot] in #20491
• build(deps): bump coverage from 7.13.2 to 7.13.3 by @dependabot[bot] in #20488
• build(deps): bump actions/upload-artifact from 5 to 6 in /.github/actions/install by @dependabot[bot] in #20371
• build(deps): bump actions/upload-artifact from 5 to 6 by @dependabot[bot] in #20369
• build(deps): bump actions/download-artifact from 6 to 7 by @dependabot[bot] in #20364
• build(deps): bump actions/cache from 4 to 5 by @dependabot[bot] in #20367
• build(deps): bump peter-evans/create-pull-request from 7 to 8 by @dependabot[bot] in #20365
• build(deps): bump Apple-Actions/import-codesign-certs from 5 to 6 by @dependabot[bot] in #20334
• build(deps): bump tar and electron-builder for all platforms in build_scripts by @dependabot[bot] in #20450
• build(deps): bump setuptools from 80.10.2 to 82.0.0 by @dependabot[bot] in #20518
• build(deps): bump boto3 from 1.42.42 to 1.42.45 by @dependabot[bot] in #20519
• build(deps): bump ruff from 0.14.13 to 0.15.0 by @dependabot[bot] in #20486
• build(deps): bump coverage from 7.13.3 to 7.13.4 by @dependabot[bot] in #20522
• build(deps): bump pip from 26.0 to 26.0.1 by @dependabot[bot] in #20521
• build(deps): bump types-setuptools from 80.10.0.20260124 to 82.0.0.20260210 by @dependabot[bot] in #20520
• build(deps): bump aws-actions/configure-aws-credentials from 5 to 6 by @dependabot[bot] in #20517
• refactor connection handshake by @arvidn in #20512
• Disable git text conversion via .gitattributes, remove CI workarounds by @altendky in #20514
• grep for and remove altendky by @Quexington in #20538
• Update zstd to 1.5.7.3 by @emlowe in #20537
• reject unsolicited RespondCompactVDF messages by @arvidn in #20531
• made log less chatty for compact proofs by @wjblanke in #20536
• CHIA-3900 Fix add_dummy_connection_wsc's certificate handling for harvester node type by @AmineKhaldi in #20550
• harden full node store by @arvidn in #20539
• Validate QR bit in DNS seeder to only process queries by @pmaslana in #20553
• CHIA-3901 Add missing request decorator to reject_removals_request by @AmineKhaldi in #20551
• Correct accountin...

2.6.0

2.6.0 Chia blockchain 2026-2-11

As this is a soft fork release, upgrading is strongly recommended before height 8,655,000.

What's Changed

Added

• Update error message for invalid IP and port format to clarify ipv6
• Work in Progress - increased preliminary support for V2 plot format
• Python 3.13 support
• Do not advertise a new transaction with zero cost

Changed

• Bump chia_rs to 0.35.2
• Bump chiavdf from 1.1.13 to 1.1.14
• Bump chiabip158 from 1.5.3 to 1.5.4
• Bump chiapos from 2.0.11 to 2.0.12
• Skip fetching additions and removals for non transaction blocks in FullNodeAPI's request_header_blocks
• Tolerate quote related cost mismatch for older nodes
• Use an adapted version of deficit round robin algorithm in TransactionQueue's pop
• Prioritize trusted peers in FullNodeAPI's send_transaction
• Make sure the costs and fees match when a peer notifies us of a new transaction that we saw already
• Remove unnecessary private key access from get_public_keys
• Set minimum to TLSv1.3
• Make sure the fee and cost specified in a NewTransaction match the ones from validating its spend bundle
• Change v1 plot phase-out
• Simplify tx_request_and_timeout and make it iterate over a dynamic list of peers with transactions
• Improve v2-plot support in plot-sync
• Don't allow, or harvest, v2 plots before hard fork activation
• Change Chia Root CA to expire 31 Dec 2037
• Default to single solver thread
• Relax PoS validation in weight proofs
• Advertise requested mempool transactions instead of sending them
• In TransactionQueue, prioritize peer queue transactions by fee per cost
• Eliminate rate limits and bans for exempt peer networks
• Updated GUI translations

Fixed

• Fix RPC key deletion endpoints to actually delete intended DBs
• Fix some typos in comments by @rocksload
• Some minor issues in comment by @deepdring
• Fix a large number of spelling issues in comments by @joemicky
• Fix typo for Timelord._check_for_new_sp comments by @wanziforever
• Change GetTransactions to use uint32 to support wallets with very large numbers of transactions
• Fix measurement of harvester lookup times for logging
• Fixed NFT minting RPC parameter (fixes #20360)
• Fixed CAT names on overview (fixes #20297)

2.6.0-rc5

What's Changed

Changed

• push out testnet 11 activation of soft-fork 8 by @arvidn in #20473
• Bring-in CHIA-3887 Skip fetching additions and removals for non transaction blocks in FullNodeAPI's request_header_blocks by @AmineKhaldi in #20472

Full Changelog: 2.6.0-rc4...2.6.0-rc5

2.6.0-rc4

What's Changed

Changed

• CHIA-3883 Tolerate quote related cost mismatch for older nodes by @AmineKhaldi in #20460

Full Changelog: 2.6.0-rc3...2.6.0-rc4

2.6.0-rc3

What's Changed

Changed

• bump chia_rs to 0.35.2 by @arvidn in #20437
• push out testnet11 soft fork activation height by 8 days (40000 blocks) by @arvidn in #20445
• Update gui to 92725c68ca0012cb8e35bf14a79cc92fc668a329 by @wjblanke in #20446

Full Changelog: 2.6.0-rc2...2.6.0-rc3

2.6.0-rc2

What's Changed

Changed

• Cherry-pick CHIA-3867 Simplify TransactionQueue's put (#20392) by @AmineKhaldi in #20395
• bump chia_rs to 0.35.1 by @arvidn in #20393
• Cherry-pick CHIA-3856 Use an adapted version of deficit round robin algorithm in TransactionQueue's pop by @AmineKhaldi in #20396
• Cherry-pick CHIA-3866 Prioritize trusted peers in FullNodeAPI's send_transaction by @AmineKhaldi in #20407
• Updated GUI to 8896de8ac9b50c35a69b3547cde77818a9e01da1 by @wjblanke in #20409

Fixed

• [LABS-394] Add a streamable hack to force ConditionValidTimes serialization order by @Quexington in #20383
• get_flags, fix pre_sp_tx_block, test CHIA-3861 by @almogdepaz in #20400

Full Changelog: 2.5.8-rc1...2.6.0-rc2

2.5.8-rc1

What's Changed

Added

• Update error message for invalid IP and port format to clarify ipv6 by @hoffmang9 in #20165
• PoS2-prover by @arvidn in #20159
• python 3.13 support by @altendky in #19123
• [LABS-151] Replace NIL with Program.NIL by @Quexington in #20189
• [LABS-161] Add a method for creating outgoing transactions by @Quexington in #20209
• CHIA-3799 It's not reasonable to advertise a new transaction with zero cost by @AmineKhaldi in #20231

Changed

• build(deps): bump dnspython from 2.7.0 to 2.8.0 by @dependabot[bot] in #20149
• Rename chialisp repo and update dependencies by @aqk in #20154
• [LABS-247] Move defaults from 3.10 to 3.12 by @Quexington in #20115
• chore: fix some minor issues in comment by @deepdring in #19980
• chore: fix a large number of spelling issues in comments by @joemicky in #20068
• CHIA-3779 Make sure the costs and fees match when a peer notifies us of a new transaction that we saw already by @AmineKhaldi in #20140
• build(deps): bump github/codeql-action from 3 to 4 by @dependabot[bot] in #20135
• build(deps): bump actions/setup-node from 5 to 6 by @dependabot[bot] in #20148
• fix typo for Timelord._check_for_new_sp comments, we get next 10 sp by @wanziforever in #20160
• [LABS-282] Remove unnecessary private key access from get_public_keys by @Quexington in #20162
• [CHIA-3606] Port create_offer_for_ids to @marshal by @Quexington in #20056
• build(deps): bump colorlog from 6.9.0 to 6.10.1 by @dependabot[bot] in #20174
• build(deps): bump boto3 from 1.40.51 to 1.40.55 by @dependabot[bot] in #20177
• build(deps): bump psutil from 7.1.0 to 7.1.1 by @dependabot[bot] in #20182
• build(deps): bump pyinstaller from 6.15.0 to 6.16.0 by @dependabot[bot] in #20074
• build(deps): bump aiohttp from 3.13.0 to 3.13.1 by @dependabot[bot] in #20175
• build(deps): bump cryptography from 46.0.2 to 46.0.3 by @dependabot[bot] in #20176
• CHIA-2102 - Set minimum to TLSv1.3 by @emlowe in #19079
• CHIA-3788 Simplify tx_request_and_timeout by converting it from a closure into a FullNode class method by @AmineKhaldi in #20186
• build(deps): bump click from 8.1.8 to 8.3.0 by @dependabot[bot] in #20146
• build(deps): bump ruff from 0.14.0 to 0.14.1 by @dependabot[bot] in #20180
• CHIA-3787 Make sure the fee and cost specified in a NewTransaction match the ones from validating its spend bundle by @AmineKhaldi in #20166
• [CHIA-3607] Port get_offer_summary to @marshal by @Quexington in #20058
• build(deps): bump pip from 25.2 to 25.3 by @dependabot[bot] in #20199
• build(deps): bump ruff from 0.14.1 to 0.14.2 by @dependabot[bot] in #20206
• build(deps): bump psutil from 7.1.1 to 7.1.2 by @dependabot[bot] in #20207
• Manual fixes for upcoming Ruff pyupgrade push by @Quexington in #20213
• [LABS-293] Ensure wallet is synced for RPC TX endpoints by @Quexington in #20190
• [CHIA-3608] Port take_offer to @marshal by @Quexington in #20061
• build(deps): bump coverage from 7.10.7 to 7.11.0 by @dependabot[bot] in #20179
• [CHIA-3795] change v1 plot phase-out by @arvidn in #20216
• [CHIA-3793] after the hard fork, disallow block references by @arvidn in #20218
• build(deps): bump boto3 from 1.40.55 to 1.40.66 by @dependabot[bot] in #20223
• build(deps): bump aiohttp from 3.13.1 to 3.13.2 by @dependabot[bot] in #20224
• [LABS-289] Add kw_only=True to TransactionRecord by @Quexington in #20228
• [LABS-156] Remove unnecessary Streamable hint by @Quexington in #20227
• build(deps): bump ruff from 0.14.2 to 0.14.3 by @dependabot[bot] in #20225
• build(deps): bump psutil from 7.1.2 to 7.1.3 by @dependabot[bot] in #20222
• prev_tx_before_sp by @almogdepaz in #20235
• build(deps): bump actions/upload-artifact from 4 to 5 in /.github/actions/install by @dependabot[bot] in #20204
• build(deps): bump actions/download-artifact from 5 to 6 by @dependabot[bot] in #20202
• Bump chia rs 0.34.0 by @arvidn in #20226
• build(deps): bump actions/upload-artifact from 4 to 5 by @dependabot[bot] in #20203
• Api stubs by @richardkiss in #19979
• [LABS-296] Merge get_cat_spendable_coins into get_spendable_coins_for_wallet by @Quexington in #20230
• [LABS-297] Merge get/delete_(all_)notifications by @Quexington in #20259
• CHIA-3802 Simplify tx_request_and_timeout and make it iterate over a dynamic list of peers with transactions by @AmineKhaldi in #20257
• build(deps): bump chiavdf from 1.1.13 to 1.1.14 by @dependabot[bot] in #20245
• [CHIA-3566] improve v2-plot support in plot-sync by @arvidn in #20238
• don't allow, or harvest, v2 plots before hard fork activation by @arvidn in #20263
• [LABS-245] Enable PEP604 Ruff rules by @Quexington in #20269
• build(deps): bump chiabip158 from 1.5.3 to 1.5.4 by @dependabot[bot] in #20247
• build(deps): bump chiapos from 2.0.11 to 2.0.12 by @dependabot[bot] in #20246
• Update the macos-13 GH hosted runner to macos-15-intel, due to EOL of… by @pmaslana in #20284
• CHIA-3812 Comment out test workflow steps currently disabled using if false by @AmineKhaldi in #20287
• Change Chia Root CA to expire 31 Dec 2037 by @emlowe in #20281
• [LABS-310] Improve WalletStateManager.get_wallet error handling by @Quexington in #20260
• [CHIA-3609] Port get_offer(s) to @marshal by @Quexington in #20062
• v2 plots only support pool contract puzzle hash by @arvidn in #20145
• build(deps): bump urllib3 from 2.2.2 to 2.5.0 by @dependabot[bot] in #20232
• build(deps): bump pre-commit from 4.3.0 to 4.4.0 by @dependabot[bot] in #20243
• build(deps): bump diff-cover from 9.7.1 to 9.7.2 by @dependabot[bot] in #20244
• build(deps): bump click from 8.3.0 to 8.3.1 by @dependabot[bot] in #20276
• build(deps): bump js-yaml from 4.1.0 to 4.1.1 in /build_scripts/npm_windows by @dependabot[bot] in #20262
• build(deps): bump js-yaml from 4.1.0 to 4.1.1 in /build_scripts/npm_linux by @dependabot[bot] in #20268
• build(deps): bump boto3 from 1.40.66 to 1.40.75 by @dependabot[bot] in #20272
• build(deps): bump ruff from 0.14.3 to 0.14.5 by @dependabot[bot] in #20273
• CHIA-3817 Make TransactionQue...

2.5.7

2.5.7 Chia blockchain 2025-11-12

Version 2.5.7 of the Chia reference client is now available for download. Upgrading is recommended.

This release includes improved mempool performance, preliminary PoS2 plot format support, and removes python 3.9 support.

What's Changed

Added

• New Datalayer delta file format for improved performance
• New Datalayer delta file migration and increased logging
• New Datalayer config option merkle_blobs_cache_size
• Work in Progress - preliminary support for V2 plot format (eg: chia plots check)
• Add Enum support to streamable framework
• New option -i/--include-pool-rewards for chia farm summary (thanks @wallentx)

Changed

• Improved Datalayer performance significantly with migration to Rust (via chia_rs)
• Improved Mempool performance and fast forward support
• Modified wallet RPC add_key to support providing a key label
• Integrated PLOT_V1_PHASE_OUT constant
• Optimized code related to node handling of new peaks
• Simplified install-gui.sh script to remove code that attempts to find and install NodeJS
• Bump chia_rs to 0.30
• Bump chiavdf to 1.1.13
• Bump cryptography to 45.0.5
• Bump cffi to 1.17.1
• Bump markupsafe to 3.0.2

Fixed

• Changed logging of NO_OVERFLOWS_IN_FIRST_SUB_SLOT_NEW_EPOCH from error to info as this is expected in certain situations
• Fixed signage point lookup edge case at genesis in the first slot
• Change default limit for get_transactions to 65536 (uint16)

Removed

• Removed the following unsupported Wallet RPC APIs: did_update_recovery_ids, did_recovery_spend, did_get_recovery_list, did_create_attest, did_get_information_needed_for_recovery
• Python 3.9 is no longer supported

2.5.7-rc4

What's Changed

Fixed

• dont add solver peer by @almogdepaz in #20234

Full Changelog: 2.5.7-rc3...2.5.7-rc4

2.5.7-rc3

What's Changed

Fixed

• remove solver from service start by @almogdepaz in #20210
• fix get_fee_estimate assertion by @almogdepaz in #20211

Full Changelog: 2.5.7-rc2...2.5.7-rc3