This contracts release adds an optional DA Challenge contract for use with OP Plasma. If usePlasma is set to true in the deploy config, then the OP Plasma feature will be enabled.

The challenge DA contract is used to ensure that data posted as part of OP Plasma is made available. There are four deploy config parameters that must be set when using this feature: daChallengeWindow, daResolveWindow, daBondSize, daResolverRefundPercentage

⬆️ This is a recommended release for Optimism Mainnet, particularly for op-batcher operators.

This release contains general fixes & improvements to op-node, op-batcher, & op-proposer. This also update the monorepo op-geth dependency to https://github.com/ethereum-optimism/op-geth/releases/tag/v1.101311.0

The most important change to be aware of is that the op-batcher is now significantly more performant in handling span batches that contain a large number of L2 blocks.

Partial Changelog

• Rename derive.CompressorFullErr to conventional ErrCompressorFull by @sebastianst in #9936
• chore(op-proposer): Update Proposer Description by @refcell in #9916
• op-node: fetch l1 block with retry by @jsvisa in #9869
• op-challenger: Unhide subcommands by @ajsutton in #9989
• Tests: Batching Benchmarks by @axelKingsley in #9927
• feat(op-service):Persist RethDB instance in the go fetcher struct. by @Nickqiaoo in #9904
• op-batcher: stateful span batches & blind compressor by @axelKingsley in #9954
• simplify bigMSB by @zhiqiangxu in #9998
• all: use the built-in slices library by @carehabit in #10005
• op-node: p2p ping test CI flake fix by @protolambda in #10010
• fix(op-node): handle async disconnects to avoid test flakiness by @felipe-op in #10019
• Update op-geth dependency to v1.101309.0-rc.2 by @roberto-bayardo in #9935
• txmgr: fix racy access to nonces slice in TestQueue_Send with mutex by @sebastianst in #10016
• CI: Less verbose output by @trianglesphere in #10059
• handle Read more correctly by @zhiqiangxu in #10034
• update geth dependency to version w/ v1.13.11 upstream commits by @roberto-bayardo in #10041
• op-batcher: Embed Zlib Compressor into Span Channel Out ; Compression Avoidance Strategy by @axelKingsley in #10002

Full Changelog: v1.7.2...v1.7.3

🚢 Docker Images:

• https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:v1.7.3
• https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.7.3
• https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-proposer:v1.7.3

⬆️ This is a strongly recommended release of op-batcher for all chain operators.

op-batcher changes

Multi-blob support in op-batcher

See release notes for v1.7.2-rc.3 for details on how to configure a multi-blob batcher.

Improved channel duration tracking

The batcher now tracks channel durations relative to the last L1 origin in a previous channel. The last channel's L1 origin is restored at startup and during reorgs.

This ensures that the desired channel duration survives restarts of the batcher, which is particularly important for low-throughput chains that use channel durations of a few hours.

There's a known quirk in the new tracking design, which leads to a slightly lower effective channel duration (~1min lower), related to how a channel timeout is determined relative to the current L1 head, not current channel's newest L1 origin. This will be improved in a future release.

Breaking compressor configuration change

The channel and compressor configuration got simplified by removal of the target-frame-size flag. The only configuration parameters left to configure the channel size are

• max-l1-tx-size - default of 120k for calldata; for blobs this is overwritten to the max blob size
• taget-num-frames - default of 1 for calldata; for multi-blob txs, set this to the desired amount of blobs per blob-tx (e.g. 6)
  The default compressor is the shadow compressor, which is recommended in production.

Overflow frames bug fix

The batcher now correctly estimates a channel's output size, fixing a rarely but regularly occurring bug that produced overflow frames, leading for example to a 7th blob that was sent in a second batcher transaction.

op-node changes

• Improved peering behavior
• Per-chain hardfork activation times via superchain-registry

Partial Changelog

• feat(op-node): clean peer state when disconnectPeer is called and log intercept blocks by @felipe-op in #9706
• make txmgr aware of the txpool.ErrAlreadyReserved condition by @roberto-bayardo in #9683
• op-node/rollup/derive: also mark IsLast as true when closed && maxDataSize==readyBytes by @zhiqiangxu in #9696
• op-node: Record genesis as being safe from L1 genesis by @ajsutton in #9684
• TXManager: add IsClosed to TxMgr and use check in BatchSubmitter by @axelKingsley in #9470
• Remove hardfork activation time overrides by @geoknee in #9642
• feat(op-node): gater unblock by @felipe-op in #9763
• op-node: Restore previous unsafe chain when invalid span batch by @pcw109550 in #8925
• export ChannelBuilder so we can use it in external analysis scripts by @roberto-bayardo in #9784
• op-node: Unhide the safedb.path option by @ajsutton in #9789
• More bootnodes by @trianglesphere in #9801
• simplify channel state publishing flow by separating tx sending from result processing by @roberto-bayardo in #9757
• op-batcher: Multi-blob Support by @sebastianst in #9779
• feat: add tx data version byte by @tchardin in #9845
• op-batcher: more accurate max channel duration tracking by @danyalprout in #9769
• remove an impossible condition in NextBatch by @zhiqiangxu in #9885
• feat(op-node): p2p rpc input validation by @felipe-op in #9897
• op-batcher: rework channel & compressor config, fix overhead bug by @sebastianst in #9887
• op-batcher: fix "handle receipt" log message to properly log id by @sebastianst in #9918

New Contributors

• @alecananian made their first contribution in #9805
• @friendwu made their first contribution in #9862

Full Changelog: v1.7.0...v1.7.2

🚢 Docker Images

• https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:v1.7.2
• https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.7.2
• https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-proposer:v1.7.2

🔴✨ Multi-Blob Batcher Pre-Release

The op-batcher in this release candidate has the capabilities to send multiple blobs per single blob transaction. This is accomplished by the use of multi-frame channels, see the specs for more technical details on channels and frames.

A minimal batcher configuration (with env vars) to enable 6-blob batcher transactions is:

      - OP_BATCHER_BATCH_TYPE=1 # span batches, optional
      - OP_BATCHER_DATA_AVAILABILITY_TYPE=blobs
      - OP_BATCHER_TARGET_NUM_FRAMES=6 # 6 blobs per tx
      - OP_BATCHER_TXMGR_MIN_BASEFEE=2.0 # 2 gwei, might need to tweak, depending on gas market
      - OP_BATCHER_TXMGR_MIN_TIP_CAP=2.0 # 2 gwei, might need to tweak, depending on gas market
      - OP_BATCHER_RESUBMISSION_TIMEOUT=240s # wait 4 min before bumping fees

This enables blob transactions and sets the target number of frames to 6, which translates to 6 blobs per transaction. The min. tip cap and base fee are also lifted to 2 gwei because it is uncertain how easy it will be to get 6-blob transactions included and slightly higher priority fees should help. The resubmission timeout is increased to a few minutes to give more time for inclusion before bumping the fees, because current txpool implementations require a doubling of fees for blob transaction replacements.

Multi-blob transactions are particularly interesting for medium to high-throughput chains, where enough transaction volume exists to fill up 6 blobs in a reasonable amount of time. You can use this calculator for your chain to determine what number of blobs are right for you, and what gas scalar configuration to use. Please also refer to our documentation on Blobs for chain operators.

🚢 Docker image: https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.7.2-rc.3

A full v1.7.2 release of the op-stack follows soon.

⬆️ This is a recommended release for node operators using Snap Sync on Optimism Mainnet & Sepolia. For other users, this is a minor release. Node operators should be on at least v1.7.0.

Changes

• This release contains a fix to snap sync to ensure that all blocks are inserted to the execution engine when snap sync completes. Previously once snap sync would complete, if blocks where received out of order, the op-node could have internally inconsistent state & the unsafe head could stall for a period of time.
• This release also contains a safeDB feature which tracks the L1 block L2 blocks are derived from.

Partial Changelog

• op-node: Add option to enable safe head history database by @ajsutton in #9575
• op-node: Add flag category and improve testing by @ajsutton in #9636
• op-node: fix finalize log by @will-2012 in #9643
• op-node: p2p pinging background service by @protolambda in #9620
• op-node: Cleanup unsafe payload handling by @trianglesphere in #9661

New Contributors

• @will-2012 made their first contribution in #9643

Full Changelog: op-node/v1.7.0...op-node/v1.7.1

🚢 Docker Images

• https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:v1.7.1

✨🔴 Optimistic Ecotone Mainnet Release

❗ Mainnet operators are required to update to this release to follow the chain post-Ecotone. This release contains an optimistic Ecotone Mainnet activation time of Mar 14, 00:00:01 UTC.

⚠️ The old release v1.6.1 contained a different Ecotone Mainnet activation date, so it is particularly important for Mainnet operators to upgrade from this release.

Optimism Governance Voting Cycle 19

The Ecotone activation contained in this release is still subject to approval during the currently ongoing Optimism Governance voting cycle 19, see the Governance Proposal of the Ecotone Protocol Upgrade. The voting period ends on Mar 6 while the veto period ends on Mar 13, 19:00 UTC.

We will soon publish a Veto Release in advance with the Ecotone OP Mainnet activation removed so node operators can prepare for the unlikely event of a negative vote or a veto. We will also soon provide documentation on how to override the Ecotone activation included in this or future releases via command line flags or env vars. This leaves an emergency window of 5h to change the node configuration, or update to the Veto Release, in the unlikely event that the veto period ends in a veto.

New Beacon Endpoint

Node operators need to configure a Beacon endpoint for op-node, because soon after the Ecotone activation, batch transactions will be sent as 4844 blobs, and blobs can only be retrieved from Beacon nodes. If you're using Lighthouse, make sure to use at least version v5.0.0, which contains the Dencun upgrade for Mainnet.

The op-node provides a new command line flag & env var for configuring the Beacon endpoint: --l1.beacon and $OP_NODE_L1_BEACON. If you need to configure an HTTP header for authentication with the Beacon endpoint, you can use the flag --l1.beacon-header or $OP_NODE_L1_BEACON_HEADER.

❗ We encourage all node operators to already configure their Beacon endpoint to avoid interruptions after the Ecotone activation.

Experimental Snap Sync (execution-layer sync)

op-node 1.7.0 and op-geth v1.101308.2 now support Snap Sync. To enable snap sync set the --syncmode=execution-layer flag on op-node. op-geth should also be set to --syncmode=snap and must have discovery and be peered to the network for snap sync to work.

This feature is ready to be tested, but still may contain some bugs as it is rolled out.

Partial Changelog (affecting op-node)

• op-node: Expose method to load rollup config without a CLI context by @ajsutton in #9554
• op-service/client: Add http header option to BasicHTTPClient by @sebastianst in #9601
• op-node: Add optional Beacon header flag by @sebastianst in #9604
• op-node: Unhide syncmode flag by @trianglesphere in #9611
• op-node: Fix bootnodes port by @trianglesphere in #9621
• Import SystemConfigProxy address from new location in superchain (registry). by @geoknee in #9585
• Update Ecotone mainnet activation to Mar 14 00:00:01 UTC by @sebastianst in #9625
• op-node: Add flag categories by @trianglesphere in #9629

Full Changelog (monorepo): v1.6.1...v1.7.0

🚢 Docker Images

https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:v1.7.0
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.7.0
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-proposer:v1.7.0

❗ OUTDATED Ecotone Mainnet Release

❌ The Optimistic Ecotone Mainnet activation has been moved forward to Mar 14, 00:00:01 UTC! You MUST NOT use this release on Mainnet. Use v1.7.0 instead.

✅ You can safely use this release on all other testnets and devnets.

Old Optimistic Release Background Info

This release contained an optimistic Ecotone Mainnet activation time of Mar 18, 17:00:01 UTC. The purpose of this release was to have a reference for the Governance Proposal of the Ecotone Protocol Upgrade. The Ecotone Mainnet activation still needs to be approved during the currently ongoing Optimism Governance voting cycle 19 whose review and voting periods runs from Feb 15 to Mar 6. The veto period ends on Mar 13.

We will soon publish a Veto Release in advance with the Ecotone OP Mainnet activation removed so node operators can prepare for the unlikely event of a negative vote or a veto. We will also provide documentation on how to override the Ecotone activation included in this or the v1.7.0 release.

New Beacon Endpoint

Node operators who already wish to upgrade to this release need to configure a Beacon endpoint for op-node, because soon after the Ecotone activation, batch transactions will be sent as 4844 blobs, and blobs can only be retrieved from Beacon nodes. If you're using Lighthouse, make sure to use at least the finalized version v4.6.0 because the latest rc contains a bug in its blob_sidecars http endpoint.

The op-node provides a new configuration flag & env var for configuring the Beacon endpoint: --l1.beacon and $OP_NODE_L1_BEACON.

We encourage all node operators to already configure their Beacon endpoint to avoid interruptions after the Ecotone activation.

Ecotone Sepolia

This release is ready to be used by Sepolia node operators. Ecotone activated on Sepolia at Wed Feb 21 17:00:00 UTC 2024. The activation has been part of v1.5.1 as well.

🐞 Bug Fixes

• op-node contained a bug that affected block gossiping for sequencers. This release fixes that bug (#9560). Because of this bug, we advice against usage of op-node v1.6.0 and this version has therefore not been published.
• log: DynamicLogHandler to also capture derived handlers by @sebastianst in #9479

Partial Changelog - op-node

• refactor(op-service, op-node): add missing stop ticker by @hoanguyenkh in #9474
• op-node,op-service: Add Fallback Beacon Client by @trianglesphere in #9458
• go,rollup: Prepare optimistic Ecotone Mainnet release by @sebastianst in #9528
• op-node: Still EL sync if the transition block is finalized by @trianglesphere in #9501
• add additional check by @axelKingsley in #9560
• add additional check before emitting log warning by @axelKingsley in #9564

Partial Changelog - op-batcher & op-proposer

• change gas re-estimation difference logging to debug by @roberto-bayardo in #9420
• log blob fee cap in txmgr by @roberto-bayardo in #9435
• txmgr: Set default min tip cap and basefee to 1 GWei by @sebastianst in #9502

New Contributors

• @tchardin made their first contribution in #9269
• @d-roak made their first contribution in #9462
• @hoanguyenkh made their first contribution in #9474
• @Frierened made their first contribution in #9540

Full Changelog (monorepo): v1.5.1...v1.6.1

🚢 Docker Images

https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:v1.6.1
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.6.1
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-proposer:v1.6.1

❗ Ecotone Sepolia Upgrade

This is a mandatory release for node operators on the Sepolia Superchain.
The Ecotone protocol upgrade will activate on Wed Feb 21 17:00:00 UTC 2024 on Sepolia OP Chains.

New Beacon Endpoint

It is required for Sepolia operators to configure a Beacon endpoint for op-node, because soon after the Ecotone activation, batch transactions will be sent as 4844 blobs, and blobs can only be retrieved from Beacon nodes. If you're using Lighthouse, make sure to use at least the finalized version v4.6.0 because the latest rc contains a bug in its blob_sidecars http endpoint.

The op-node provides a new configuration flag & env var for configuring the Beacon endpoint: --l1.beacon and $OP_NODE_L1_BEACON

Mainnet node operators are strongly encouraged to already get their Beacon node infra set up so that they will be ready to enable their Beacon endpoints once Ecotone activates on Mainnet. The Activation date for Mainnet will be communicated at a later date.

✨ Features

The upstream op-geth dependency is updated to v1.101308.0, which is based on upstream geth v1.13.8. This implies a change of the underlying logging framework to slog (#8917).

🐞 Bug Fixes

This release now adheres to the spec and lets op-node call the correctly-versioned methods on the EL client (#9253).

Receipts are now validated before entering the cache, fixing a bug that required restarts of op-node that got stuck during synching (#9417).

Partial Changelog

• check prior fork consistently by @zhiqiangxu in #9255
• op-node: genesis deduplicate json write by @tynes in #9323
• fix(bootnode): disable req/response sync on bootnode p2p by @danyalprout in #9298
• Use engine API that matches hardfork version by @ImTei in #9253
• Update op-geth dependency to upstream geth v1.13.8 and migrate to slog by @sebastianst in #8917
• go,rollup: Prepare OP Sepolia Ecotone release by @sebastianst in #9418
• Fix: Refactor Receipt Validation to ReceiptsProvider by @axelKingsley in #9417
• op-node: Log finalized block when EL sync is complete by @trianglesphere in #9428

Full Changelog (monorepo): v1.5.0...v1.5.1

🚢 Docker Images

https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:v1.5.1
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.5.1
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-proposer:v1.5.1

⚗️ This is a release candidate of the upcoming v1.5.1 release to unblock node operators using EL clients different from op-geth. It uses the correct Engine API call versions depending on the active fork.

We will conduct more internal testing before we promote this to the official latest release.

Please read the release notes of v1.5.0 for more background on Ecotone and required configuration changes for node operators.

What's Changed - op-node

• check prior fork consistently by @zhiqiangxu in #9255
• op-node: genesis deduplicate json write by @tynes in #9323
• fix(bootnode): disable req/response sync on bootnode p2p by @danyalprout in #9298
• Use engine API that matches hardfork version by @ImTei in #9253

Full Changelog (monorepo): op-node/v1.5.0...op-node/v1.5.1-rc.1

❗Delta & Ecotone Upgrades

This is a mandatory release for node operators on Mainnet and Goerli. It includes two protocol upgrade activations

• Delta activates on Mainnet at Thu Feb 22 00:00:00 UTC 2024
• Ecotone activates on Goerli at Tue Feb 6 17:00:00 UTC 2024

❗ Known issue with alternative execution layer clients (like op-reth)

This release always uses the V3 methods of the Engine API when calling out to the EL client. This breaks with the upstream EL spec, which requires to use the correctly-versioned methods depending on the active fork.

The fix (#9253) is already available in the release candidate op-node/v1.5.1-rc.1. In the meantime, this release is guaranteed to work with op-geth/v1.101305.3. Note that only release from v1.5.0 contain the mainnet Delta and Goerli Ecotone activation times, so if you're running a node on these networks, you must upgrade to at least op-node/v1.5.0. On other networks, you can still use op-node/v1.4.3.

New Beacon Endpoint

It is required for Goerli operators to configure a Beacon endpoint for op-node, because soon after the Ecotone activation, batch transactions will be sent as 4844 blobs, and blobs can only be retrieved from Beacon nodes. If you're using Lighthouse, make sure to use at least the finalized version v4.6.0 because the latest rc contains a bug in its blob_sidecars http endpoint.

The op-node provides a new configuration flag & env var for configuring the Beacon endpoint: --l1.beacon and $OP_NODE_L1_BEACON

Mainnet and Sepolia node operators are strongly encouraged to already get their Beacon node infra set up so that they will be ready to enable their Beacon endpoints once Ecotone activates on Sepolia and Mainnet. Activation dates for these networks will be communicated at a later date.

✨ Features

• Full Ecotone/4844/Cancun support.
• ⚡ Experimental Snap Sync support in trusted environments.
• Improved shutdown behavior of op-batcher

Partial Changelog

• op-service/pprof: Support profiling to file (#6739) by @ArtyomArtamonov in #8709

Affecting op-node

• op-node: Gossip Before Import by @axelKingsley in #8905
• op-node: Execution Layer Sync by @trianglesphere in #8968

Affecting op-batcher & op-proposer

• txmgr: Add closed flag and behavior to SimpleTXManager by @axelKingsley in #8694
• txMgr: checkLimits on Fee and Tip Separately by @axelKingsley in #9154
• TxMgr: Rearrange TxMgr closure in Batcher by @axelKingsley in #9205

Ecotone/4844 specific

• update txmgr to support sending blob txs by @roberto-bayardo in #8760
• 4844: blob encoding version 2 by @angel-ding-cb in #8827
• add blob-capable data source by @roberto-bayardo in #8778
• Add batch submission policy that uses Blob transactions by @roberto-bayardo in #8769
• Ecotone: Extend P2P Request/Response format by @danyalprout in #8927
• support Ecotone l1 block info by @roberto-bayardo in #8786
• update op-geth to latest version with fixed BaseFee naming by @roberto-bayardo in #8962
• 4844: Add missing consolidation properties by @danyalprout in #8976
• Ecotone/Dencun implementation changes by @EvanJRichard in #8707
• Ecotone: change handling of non-zero padding for version 0 scalar - cap to max uint32 by @protolambda in #9068
• op-node: fix parent-beacon-block-root comparison check [Ecotone] by @protolambda in #9071
• Beacon node setup improvements by @danyalprout in #9120
• reject blobs with extraneous data by @roberto-bayardo in #9133
• op-node,sources: Add Beacon source option to fetch all sidecars by @sebastianst in #9151
• Ecotone goerli-dev-0 release candidate by @sebastianst in #9152
• op-e2e: 4844 DA support action-tests by @protolambda in #9104
• op-node: fix Ecotone beacon-block-root contract deployment by @protolambda in #9216
• op-node/rollup: Add delta time override for oplabs sepolia devnet 0 by @sebastianst in #9242
• Mainnet Delta Activation by @trianglesphere in #9279
• op-node: Add ecotone override by @trianglesphere in #9284

New Contributors (to monorepo)

• @angel-ding-cb made their first contribution in #8827
• @ArtyomArtamonov made their first contribution in #8709
• @sqltrigger made their first contribution in #8916
• @infosecual made their first contribution in #9004
• @geoknee made their first contribution in #9018
• @zhiqiangxu made their first contribution in #9014
• @luchenqun made their first contribution in #9070
• @david-roth-cb made their first contribution in #9048
• @henridevieux made their first contribution in #9106
• @LucasLvy made their first contribution in #9200
• @IssouChancla made their first contribution in #8970
• @mario-eth made their first contribution in #9224

Full Monorepo Changelog: v1.4.3...v1.5.0

🚢 Docker Images

https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-node:v1.5.0
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-batcher:v1.5.0
https://us-docker.pkg.dev/oplabs-tools-artifacts/images/op-proposer:v1.5.0