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…rification Covers: - Arc domain 26 finalized-finality attestation latency (2-6 hours, not minutes) - Recommended retry pattern and fast-finality alternative - PUSH0/Osaka EVM compatibility correction - EIP-7825 gas cap note - Sourcify-based contract verification workaround Fixes circlefin#428, circlefin#429, partially documents circlefin#425 and circlefin#427
osr21
requested review from
ZhiyuCircle,
ancazamfir,
romac and
sergio-mena
as code owners
September 17, 2026 21:56
Contributor
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Contributor
|
Hi @osr21, Thank you for your interest in contributing to Arc Node. This PR has been automatically closed because you are not assigned to issue #428. We require contributors to be explicitly assigned to an issue before submitting a PR. To contribute properly:
Please see our CONTRIBUTING.md for more details. |
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Summary
Closes #428. Partially documents #425 and #427. Corrects the stale PUSH0 claim raised in #429.
Adds
docs/cctp-integration.md— a developer-facing guide for integrating CCTP v2 on Arc Mainnet. The page collects information that is currently either absent or scattered across external sources and frequently causes support requests.Contents
CCTP parameters
Canonical table of Arc Mainnet domain, chain ID, TOKEN_MESSENGER_V2, MESSAGE_TRANSMITTER_V2, and USDC addresses.
Attestation timing (fixes #428)
Explains that
finalized-finality attestations for Arc domain 26 take 2–6 hours (not seconds), whypending_confirmations+message: nullis normal and not a failure, why callingreattestreturns"already finalized", and what retry interval and max-wait to use. Includes a TypeScript polling example. Recommendsfastfinality when the application does not requirefinalized.EVM compatibility (fixes #429)
Corrects the stale claim that Arc rejects
PUSH0(EIP-3855). Arc Mainnet is Osaka-active;PUSH0is fully supported andevm_version = "paris"is no longer needed. Also notes the EIP-7825 gas cap (2²⁴) and its effect oneth_estimateGas/eth_call(partially documents #427).Contract verification (documents #425)
Explains the Cloudflare WAF issue that blocks
--verifier blockscoutand shows the--verifier sourcify --skip-is-verified-checkworkaround that bypasses it.