Infra Graveyard Weekly #01: Polygon's Erigon namespace is gone, and your provider picked the date
Polygon dropped the Erigon namespace, Etherscan cut a fourth chain, Zapper's API goes dark tomorrow — this week's crypto infrastructure deprecations.
Developer-facing deprecations and shutdowns in crypto infrastructure. Days left count from 2 August 2026.
1. Deadline board
| What | Deadline (UTC) | Required action | Days left |
|---|---|---|---|
| Zapper: site, apps and API off | 2026-08-03 | Repoint balance/position reads | 1 |
| BitMEX ends Convert for 5 tokens | 2026-08-05 04:00 | Stop routing those conversions | 3 |
| Gnosisscan explorer discontinued | 2026-08-11 23:59 | Repoint explorer links and embeds | 9 |
| BitMEX goes reduce-only, force-closing starts | 2026-08-26 04:00:00 | Close positions, withdraw | 24 |
| DFK Chain retired | 2026-08-28 | Exit smart wallets, break LPs, bridge out | 26 |
| Etherscan Gnosis API needs a paid plan | 2026-09-01 | Upgrade the key or move Gnosis reads | 30 |
| BitMEX ceases operations | 2026-09-23 04:00:00 | Withdraw — idle balances get charged | 52 |
| Sui JSON-RPC code removed | mid-2026-10 | Finish the gRPC/GraphQL migration | ~70 |
| Google Cloud Blockchain Node Engine + RPC shut down | 2026-12-15 | Provision replacements, delete nodes | 135 |
| Polygon zkEVM claims window closes | 2027-12-31 | Claim exit-snapshot balances on L1 | 516 |
| Ethereum Hoodi testnet EOL | 2028-09 | None yet — the date exists up front | ~760 |
2. New this week
Polygon PoS drops Erigon, and three providers disagreed on when [quiet]
Polygon Labs sunset the 0xpolygon/erigon client on Polygon PoS. Gone with it: the whole erigon_* namespace plus trace_filter, trace_get, trace_rawTransaction. Remaining trace_* methods survive on Bor. This hits anyone running Parity-style tracing against Polygon — indexers, analytics, tax and forensics pipelines — and anyone calling historical eth_getProof: Bor has no trie node retention yet, and Alchemy caps eth_getProof at the latest 128 blocks.
The awkward part is the date. Polygon Labs and Alchemy cut on 1 August; QuickNode cut Amoy on 1 July and mainnet on 15 July. Identical code broke up to four weeks apart depending on who serves your RPC.
Already in effect. Action: move to debug_trace* and eth_getLogs; check your provider's date, not the chain's.
Polygon Labs · Alchemy · QuickNode
Zapper turns off the API tomorrow [loud]
Site, mobile apps and API all stop on 3 August; anything reading balances or positions through Zapper loses its data source. The integrations repo was archived on 18 July. Action: repoint reads today, export what you need.
Date from the team's 8 July announcement — Zapper's domains sit behind Cloudflare, no primary page was readable.
BitMEX winds down in three steps [loud]
Registrations stopped 23 July; accounts go reduce-only on 26 August and the exchange stops on 23 September, force-closing whatever is open. Verified accounts that leave a balance behind are charged "USD50 equivalent or 1% per annum, whichever is greater", monthly. Action: flatten, withdraw, export trade history before the API goes.
DFK Chain retires on 28 August [loud]
DeFi Kingdoms is shutting its own Avalanche L1 and moving the game to Avalanche C-Chain. Only DFK-native assets are covered by the team's migration; bridged JEWEL, BTC, ETH, AVAX and USDC are yours to move, and what stays behind cannot be recreated. Action: move assets from smart wallets to standard wallets before bridging, and break every LP position.
Announced 31 July on the project's X account; the docs carry no notice.
3. Quiet changes
Etherscan's 2026 attrition [quiet]
Four chain-support cuts this year: Swell in February, Scroll in April, the Moonbeam family (1284, 1285, 1287) on 31 July, now Gnosis. Gnosisscan goes dark 11 August; Gnosis community API endpoints are free until 31 August, then need a Lite plan.
Two free-tier cuts also landed on 1 July: pagination fell from 10,000 to 1,000 records per request across ten endpoints, and internal transactions by block range moved to Pro. Celo's free tier became a shared pool per chain on 16 July, so your key's throughput now depends on strangers. Action: if you paginate, budget ten times the requests; if you read Gnosis, price the plan.
Sui switched off JSON-RPC [quiet]
Foundation mainnet full nodes disabled it during the week of 27 July; code removal follows in mid-October. Sui's docs warn that not every provider has gRPC or GraphQL enabled yet — the official migration path may not exist at yours. Action: confirm support before October.
Google Cloud is leaving the RPC business [quiet]
Blockchain Node Engine and Blockchain RPC shut down 15 December 2026; leftover endpoints are deleted automatically that day, legacy nodes by hand. Google points customers at QuickNode — so anyone who picked BNE for the GCP billing relationship rather than the product now has a procurement problem on top of a migration. Action: pick a replacement provider now; the December date includes deleting your own legacy nodes.
Two dependencies moved out from under CI [quiet]
ethereum/execution-spec-tests is archived: fixture releases now come from ethereum/execution-specs, so pipelines pulling the old release URL quietly stop updating. RaoFoundation/bittensor is archived too — the SDK ships as Bittensor 11 from the subtensor monorepo, v10 stays on PyPI with no further releases. Also kalepail/passkey-kit → stellar/passkey-kit, npm name unchanged. Action: grep CI for the old repo URLs.
execution-spec-tests · bittensor
Alchemy Signer stopped taking new sign-ups [quiet]
/signup was disabled on 18 June for Alchemy Signer, Account Kit and Embedded Wallets; login and auth endpoints remain so existing users can migrate out, with no stated end date for those. Action: if you are still creating wallets there, plan the exit while the auth endpoints live.
4. Deep dive — what "sunset" leaves behind on Polygon zkEVM
Polygon zkEVM Mainnet Beta stopped sequencing on 1 July, twelve months after the announcement. The aftermath is the template every shutting L2 now copies, so it is worth reading closely.
At sunset an exit snapshot was taken of onchain wallet balances. Assets in externally-owned accounts migrate to Ethereum L1 and are claimable through a dedicated interface. Assets that were not in a wallet at snapshot time — supplied to a lending market, sitting in an LP, locked in a vault, held by a protocol contract on your behalf — cannot be auto-migrated. Transactions are no longer processed, so the contract that owes you cannot pay you. Polygon said this plainly in April, and it is the line users skip.
The claims window runs to 31 December 2027, after which unclaimed assets are treated as abandoned. Eighteen months sounds generous until you consider who is left: by definition, the people who did not react to a twelve-month warning. Claim rates decay fast after the first weeks and the long tail never arrives.
Three lessons for anyone building on a thin L2. "Bridge out before the date" is not the same instruction as "unwind your positions before the date", and only the second one saves DeFi-locked funds. The claims path depends on infrastructure that has to outlive the chain — snapshot, exit contract, read-only RPC, UI — maintained by a team with no reason left to maintain it. And put the claim deadline in the calendar next to your key rotations: December 2027 will arrive with nobody tweeting about it.
Polygon Labs: claim your funds
5. Watch
- Chainlink Data Streams free tier: secondary reports claim access ends 1 September 2026, but no such entry exists in the changelog and the docs now say there is no free tier. Unconfirmed.
- QuickNode Functions has been "being deprecated and will soon be discontinued" since October 2025. Ten months, still no date.
trailofbits/manticoreis archived and unmaintained, no successor named. If it is in your audit tooling, it is frozen.- Hoodi carries a published EOL of September 2028 — testnets now ship with expiry dates.
Infra Graveyard Weekly tracks developer-facing deprecations and shutdowns in crypto infrastructure — the changelog layer, before it breaks your build. New issue every week: RSS.
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