> For the complete documentation index, see [llms.txt](https://docs.rome.builders/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.rome.builders/canton-zk-evm/status.md). # Status and roadmap What is live on Ostia DevNet, the dated changelog and what comes next. Ostia has been live on Canton Network DevNet since 2026-10-22. As of 2026-11-09 DevNet runs the repository's main branch at commit `6fa3673` (deployed 2026-11-09 at 16:15 UTC), with Daml package 0.5.0 and the twin package 0.2.0, on ZisK 1.3.2-alpha with one GPU prover. Rome's DevNet validator runs Splice 0.10.1 with Canton 3.7.2. The code is open source under the Apache License 2.0, in [rome-protocol/canton-zk-evm](https://github.com/rome-protocol/canton-zk-evm). Some pages describe release [v0.1.0](https://github.com/rome-protocol/canton-zk-evm/tree/v0.1.0) and say where DevNet runs something newer. ## What is live on DevNet | Part | State on DevNet | | ----------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | EVM chain (chain id 770101) | Live. Deploy and call contracts through the [public RPC](/canton-zk-evm/devnet.md). | | Proofs and Canton commits | Live. Every block is proven and committed on Canton. | | Explorer, APIs and contract verification | Live. See [Explorer](/canton-zk-evm/explorer.md). | | Faucet | Live. 1 tROME per address per 24 hours for everyone, and a builder grant of 100 tROME for builders who sign in with GitHub. See [Get tROME](/canton-zk-evm/devnet.md#get-trome). | | Canton deposits, withdrawals and payments | Live since 2026-10-25, with the test token TKB (wrapped as wTKB). Rome's test parties run a deposit, a payment and a withdrawal every 10 minutes, and you can watch them on the explorer. They also ran in the 2026-10-05 local demo. | | Canton twins of ERC-20 tokens | Live since 2026-10-29. TKA and WtROME stand on Canton as twins through the vault; locks and redeems commit with their blocks. See [Deposits, withdrawals and payments](/canton-zk-evm/deposits-withdrawals-payments.md#canton-twins-of-erc-20-tokens). | | Canton Coin in and out | Live since 2026-10-29. Canton Coin comes onto Ostia as the CC token and goes back. | | Bridge | Live since 2026-11-08. A browser wallet opens a Canton account with one signature and makes the four moves between Ostia and Canton, in about 1 to 2 minutes each. The account panel shows your wallet on Ostia and your account on Canton, with the Canton balance of each token. You can send tokens to another Canton account, accept what is sent to you and take back a send that was not accepted. A Canton Coin deposit that can no longer settle can be taken back from the page. Canton accounts are named `rome::1220...`, the wallet stays connected after a reload, and the Canton account stays open in that browser until you close it. See [Bridge](/canton-zk-evm/bridge.md). | | External calls | Live since 2026-11-08. The explorer's [External calls](/canton-zk-evm/explorer.md#external-calls) view shows each block's one Canton transaction, with its status, its settlement time and its attempts. The main figures are on a Stats card, and Home links to the view. | | Canton venue swaps | Ran on 2026-10-27 (one swap, run by Rome): the buyer's payment and the seller's allocation committed in one Canton update, and the explorer lists swaps at `/swaps`. See [Build with Canton](/canton-zk-evm/build-with-canton.md#a-canton-venue). | | Twins and Canton assets in the explorer | Live since 2026-10-30. The `/twins` page and the Canton assets card on Stats show each supply against what the vault and the gateway hold. See [Explorer](/canton-zk-evm/explorer.md#twins-and-canton-assets). | | Blocks on a quiet chain | Live. The builder makes an empty block once a minute when nothing waits. | | Daml package 0.5.0 | Live since 2026-10-29 (the chain record moved to it with block 28196). It adds the registry of EVM contracts, the twins, derived deposit ids and the leg's choice context. | | Canton 3.7.2 on Rome's validator | Live since 2026-11-07 (Splice 0.10.1). | | Private transfers | Not provided. See [What is proven](/canton-zk-evm/what-is-proven.md). | Rome's test parties run the 10-minute legs. Anyone else makes their own moves from a Canton account opened on the [Bridge](/canton-zk-evm/bridge.md) page. [Deposits, withdrawals and payments](/canton-zk-evm/deposits-withdrawals-payments.md) explains how the legs and the twins work and how to watch them. ## Known limits The network limits are on [Ostia DevNet](/canton-zk-evm/devnet.md): HTTP-only RPC, the supported methods, rate limits, an empty block once a minute on a quiet chain, and the possibility of a reset. The trust limits are on [Trust model and limits](/canton-zk-evm/trust-model.md) and [What is proven](/canton-zk-evm/what-is-proven.md). ## Changelog | Date | What happened | | ---------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | 2026-10-05 | GPU demo on a local network: blocks proven and committed on Canton, with a gateway deposit, withdrawal and payment. See [Measurements](/canton-zk-evm/measurements.md). | | 2026-10-22 | Ostia live on Canton Network DevNet. Block 1 committed at 01:11:55 UTC. | | 2026-10-24 | Explorer: Contracts, Tokens, Canton, Stats and API pages, with contract verification. One-hour mixed load: 13,496 transactions in 225 blocks, all final. | | 2026-10-25 | Canton asset legs live on DevNet. The test token TKB is registered, its wrapped form wTKB exists on Ostia, and a first deposit, payment and withdrawal committed in blocks 780, 783 and 784 (08:08 to 08:10 UTC). Rome ran them with test parties. | | 2026-10-25 | The builder fills a block by the gas its transactions use, not the gas they declare, with a cap on the raw bytes of a block's transactions (196,608 on DevNet from 11:42 UTC). It makes an empty block once a minute when nothing waits, so a quiet chain no longer goes hours without one. The mixed load went from about 7.5 to about 10.9 tx/s. | | 2026-10-25 | Daml package 0.2.0, the fast block check, runs from block 1453 (11:29 UTC). The participant's Daml work per KB of the `Advance` argument fell five- to sevenfold. The legs ran again under it in blocks 1465, 1471 and 1473 (11:31 to 11:34 UTC). | | 2026-10-25 | Measured on DevNet after 0.2.0: plain transfers at 64 tx/s in steady state in the second of two bursts of 9,000 transfers (59 tx/s in the first, at a cap of 131,072 bytes), with 1,428 in a block, where the 30,000,000 gas cap binds; the Canton commit took 8.6 s at the 95th percentile in that burst. The mixed load has not been measured again since 0.2.0. See [Measurements](/canton-zk-evm/measurements.md). | | 2026-10-26 | Daml package 0.3.0 from 22:01 UTC. | | 2026-10-27 | Daml package 0.4.0 from 15:44 UTC: it adds `VenueTrade` and `FundedClaim`. At 15:55 UTC a Canton venue swapped the Canton token TKB for the ERC-20 TKA: the buyer's payment is in block 16816, in one Canton update with the seller's allocation, and the buyer's claim is in block 16823. | | 2026-10-27 | DevNet's block gas limit moved from 30,000,000 to 60,000,000 and the byte cap of a block's transactions to 393,216. The chain moved to ZisK 1.3.2-alpha with a new program key from block 15573 (12:02 UTC). | | 2026-10-28 | The Osaka fork started on DevNet (12:00 UTC). A transaction may use at most 2^24 gas. The builder moved to one GPU prover. | | 2026-10-29 | Two-way Canton assets live. Daml package 0.5.0, the vault and the twin registry service came up. ERC-20 twins (TKA, WtROME) locked and redeemed through the vault, and Canton Coin went into Ostia as wCC and back. | | 2026-10-30 | The explorer's `/twins` page and the Canton assets card on Stats went live (10:29 UTC). | | 2026-11-04 | The chain ran without an outage from 2026-10-28 07:42 UTC to 2026-11-04 18:37 UTC. On 2026-11-04 there were three machine preemptions, each recovered by itself in about 7 minutes, and the planned 15-minute validator upgrade (to Splice 0.10.0 with Canton 3.7.1, finished at 23:59 UTC) paused the chain briefly. | | 2026-11-05 | Ostia's code, commit `2857b00`, deployed on DevNet at 01:09 UTC. | | 2026-11-07 | Rome's DevNet validator moved to Splice 0.10.1 with Canton 3.7.2. | | 2026-11-08 | Ostia's code, commit `c350f87`, deployed on DevNet at 01:40 UTC: the Bridge page, the account service, twin acceptance (twin package 0.2.0) and paged Canton reads. Anyone with a browser wallet can open a Canton account and move tokens between Ostia and Canton. | | 2026-11-08 | Ostia's code, commit `24f8322`, deployed on DevNet at 07:42 UTC: a Canton Coin deposit that can no longer settle can be taken back from the Bridge page, a send that the wallet did not answer is held and checked against Ostia before it is sent again, and the page refuses an amount the builder cannot settle. | | 2026-11-08 | Ostia's code, commit `43f252c`, deployed on DevNet at 18:53 UTC: the explorer shows each block's Canton commit at `/canton`. | | 2026-11-08 | Ostia's code, commit `37a243a`, deployed on DevNet at 22:06 UTC: External calls in the explorer's header, on Stats and on Home. The Bridge asks for test tROME first, shows the account panel and takes amounts like `.5`. | | 2026-11-09 | Ostia's code, commit `7e6d040`, deployed on DevNet at 01:46 UTC: send tokens on Canton from the Bridge page, accept what is sent to you and take back a send that was not accepted. | | 2026-11-09 | Ostia's code, commit `eee1404`, deployed on DevNet at 11:37 UTC: Canton accounts are named `rome::1220...`, a reload keeps the wallet connected and the Canton account open in that browser, and the Faucet gives a builder grant of 100 tROME to builders who sign in with GitHub. | | 2026-11-09 | Ostia's code, commit `6fa3673`, deployed on DevNet at 16:15 UTC, with no change to what you see. | ## Not yet These are not built, and nothing here promises a date. They come from the "Not now" section of the [design](https://github.com/rome-protocol/canton-zk-evm/blob/v0.1.0/docs/DESIGN.md#not-now). * Throughput and block-time targets. * More than one builder. * Forced inclusion. * Privacy. * Custody hardening. The gateway party should need more than the operator's participant. * Canton TestNet and MainNet. ## Report a problem * Security problems: report them privately through GitHub, as described in [SECURITY.md](https://github.com/rome-protocol/canton-zk-evm/blob/v0.1.0/SECURITY.md). Don't open a public issue. * Bugs and questions: open an issue in the [repository](https://github.com/rome-protocol/canton-zk-evm/issues). * Ask in the Rome [Discord](https://discord.gg/vZ9rnCdNSB). --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. 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