chain state derived

chainstate.schemasure.comMarket data derived

POST https://chainstate.schemasure.com/v1/chain/state

passlisted in Coinbasecounted above 95% of Market data

0.02 USDC

per call, as the listing declares it on eip155:8453

Compare with another Every figure as JSON Cite this page

the price, as of 2026-10-12 05:54 UTC · method · pinnable

Validation state: pass; as of 2026-10-12 08:06 UTC · method · pinnable · sweep daily-2026-10-12
Uptime, 7 / 30 / 90 days: 100% / 100% / 100%; as of 2026-10-12 08:06 UTC · method · pinnable · 7 of 7 in 7d, 20 of 20 in 30d, 20 of 20 in 90d
Calls, trailing 30 days: 28; as of 2026-10-12 05:54 UTC · method · pinnable
Unique payers, trailing 30 days: 3; as of 2026-10-12 05:54 UTC · method · pinnable
Last called: 2026-10-11 07:38 UTC; as of 2026-10-12 05:54 UTC · method · pinnable
First observed by TOLLderived: 2026-09-19; as of 2026-09-19 20:39 UTC · method · pinnable · observation began 10 September 2026; listings that predate it show that date
Pricederived: 0.02 USDC; as of 2026-10-12 05:54 UTC · method · pinnable · on eip155:8453
Networks: 1; as of 2026-10-12 05:54 UTC · method · pinnable

Counters

74 observations, 22 of them a change

How has the volume on this endpoint moved?

Calls counted in the trailing 30 days on this endpoint, at every snapshot since 2026-09-20. Each point is a trailing-30-day sum as the registry published it, not a daily rate. The axis is truncated to the range of the data with a break at its foot.

In words

chain state is a POST endpoint at chainstate.schemasure.com, listed in the Coinbase registry and filed by TOLL under market data.

chain state is priced at 0.02 USDC on Base.

The request to chain state is a json body with the field address.

A response from chain state, as declared, includes ok, result, verdict, evidence, warnings, confidence and 2 others.

chain state answered the sweep of 2026-10-12 with a valid 402, as at every sweep since 2026-09-20.

chain state is the only listed endpoint on chainstate.schemasure.com.

The registry's counters give chain state 28 calls and 3 unique payers over 30 days, about 9 calls per payer.

The last call to chain state came 1 day before the snapshot, 2026-10-11.

Closest in price to chain state within market data: q verdict resource at www.ax1.vc and activities smarttraders smartmoney at x402.sniperx.fun.

chain state is priced above 73% of comparable listings in market data.

Across market data, 8,999 endpoints carry counters and chain state out-counts 95% of them.

The payee wallet is shared by 11 listings across 10 hosts.

The seller's tags on chain state are base, address, proxy and erc20.

Exactly this price appears on 809 other listings in market data.

Payment options as declared

the payment options, as of 2026-10-12 05:54 UTC · method · pinnable

Every payment option declared on this listing
registry	network	asset	amount	scheme	pay to
Coinbase	eip155:8453	USDC	0.02 USDC	exact	0x9876af…612690

Preflight checks at the last sweep

the checks, as of 2026-10-12 08:06 UTC · method · pinnableendpoint answered HTTP 402

No named check failed.

Validation history, 90 days

Every sweep that observed this endpoint, newest first.

Validation observations over the last 90 days
observed, UTC	state	sweep
2026-10-12 08:06 UTC	pass	daily-2026-10-12
2026-10-11 06:44 UTC	pass	daily-2026-10-11
2026-10-10 14:50 UTC	pass	daily-2026-10-10
2026-10-09 07:21 UTC	pass	daily-2026-10-09
2026-10-08 08:50 UTC	pass	daily-2026-10-08
2026-10-07 08:05 UTC	pass	daily-2026-10-07
2026-10-06 08:57 UTC	pass	daily-2026-10-06
2026-10-05 08:07 UTC	pass	daily-2026-10-05
2026-10-04 10:37 UTC	pass	daily-2026-10-04
2026-10-03 05:32 UTC	pass	daily-2026-10-03
2026-10-02 14:45 UTC	pass	daily-2026-10-02
2026-10-01 07:40 UTC	pass	daily-2026-10-01
2026-09-30 06:59 UTC	pass	daily-2026-09-30
2026-09-29 19:17 UTC	pass	daily-2026-09-29
2026-09-28 06:04 UTC	pass	daily-2026-09-28
2026-09-25 20:48 UTC	pass	daily-2026-09-25
2026-09-23 06:24 UTC	pass	daily-2026-09-23
2026-09-22 06:35 UTC	pass	daily-2026-09-22
2026-09-21 06:58 UTC	pass	daily-2026-09-21
2026-09-20 18:21 UTC	pass	new-after-daily-2026-09-19

Registry presence

Presence in a registry, not liveness of the service (method). Newest first.

2026-09-19 20:39 UTClisted in Coinbase

Declared input and output, as listed

From the registry record, not validated by TOLL.the declared schema, as of 2026-10-11 07:38 UTC · method · live

The input and output block

{
  "input": {
    "body": {
      "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
    },
    "type": "http",
    "method": "POST",
    "bodyType": "json"
  },
  "output": {
    "type": "json",
    "example": {
      "ok": true,
      "result": {
        "rpc": {
          "endpoints": [],
          "reachable": true,
          "configured": true
        },
        "chain": "eip155:8453",
        "proxy": {
          "kind": "zeppelinos",
          "admin": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44",
          "beacon": null,
          "detail": "resolved through the legacy zeppelinos slot; the EIP-1967 slot is empty on this contract, which is the case for Base USDC",
          "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
          "upgradeable": true,
          "slots_probed": [
            {
              "slot": "0x7050c9e0f4ca769c69bd3a8ef740bc37934f8e2c036e5a723fd8ee048ed3f8c3",
              "label": "zeppelinos.implementation",
              "value": "0x0000000000000000000000002ce6311ddae708829bc0784c967b7d77d19fd779",
              "address": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779"
            },
            {
              "slot": "0x10d6a54a4754c8869d6886b5f5d7fbfa5b4522237ea5c60d11bc4e7a1ff9390b",
              "label": "zeppelinos.admin",
              "value": "0x0000000000000000000000004fc7850364958d97b4d3f5a08f79db2493f8ca44",
              "address": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44"
            }
          ],
          "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779"
        },
        "token": {
          "detail": "symbol, decimals, and totalSupply read from the token",
          "symbol": "USDC",
          "decimals": 6,
          "total_supply": "4305008625389354"
        },
        "account": {
          "detail": "1852 bytes of runtime code",
          "code_size": 1852,
          "is_contract": true
        },
        "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "balances": [],
        "interfaces": {
          "erc20": true,
          "detail": "supportsInterface did not answer, so ERC-721 and ERC-1155 are reported as unknown rather than absent; ERC-20 is confirmed behaviourally from totalSupply, decimals, and balanceOf",
          "erc165": null,
          "erc721": null,
          "erc1155": null
        },
        "unresolved": [
          "ERC-165 interface support: supportsInterface did not answer"
        ],
        "denylist_hits": []
      },
      "verdict": "warn",
      "evidence": [
        {
          "code": "INTERFACE_PROBE_UNANSWERED",
          "detail": "This contract did not answer supportsInterface, so ERC-721 and ERC-1155 support is reported as null. That is not evidence against them: plenty of live contracts predate ERC-165 entirely.",
          "source": "erc165",
          "severity": "info"
        },
        {
          "code": "PROXY_UPGRADEABLE",
          "data": {
            "kind": "zeppelinos",
            "admin": "0x4fc7850364958d97B4d3f5A08f79db2493f8cA44",
            "implementation": "0x2Ce6311ddAE708829bc0784C967b7d77D19FD779"
          },
          "detail": "This is an upgradeable zeppelinos proxy. Everything reported here describes the implementation deployed right now; the admin can point it elsewhere before your next call lands, so this is a risk signal rather than metadata.",
          "source": "proxy-slots",
          "severity": "medium"
        }
      ],
      "warnings": [],
      "confidence": 1,
      "risk_codes": [
        "PROXY_UPGRADEABLE"
      ],
      "request_hash": "sha256:96b41fa639c553a6dc6bfaa1d8ccc056912abc36e8bbde3d65f3e1edc2bd147f",
      "data_versions": {
        "chain": "eip155:8453",
        "policy": "2026-09-19",
        "denylist": "2026-08-03.1",
        "abi_packs": "2026-08-03.1",
        "proxy_slots": "7"
      },
      "policy_version": "2026-09-19"
    }
  }
}

What the listing says

Profile a Base address in one call instead of four to six lookups. Returns contract or externally owned plus code size, proxy detection across all seven slot layouts including the legacy OpenZeppelin slot Base USDC uses, the resolved implementation, ERC-165 and behavioural ERC-20 detection, token metadata, requested ERC-20 balances, and denylist hits. Answers unknown rather than guessing, and null rather than false when a contract stays silent. Not a guarantee that an address is safe.

the record, 2026-10-11 07:38 UTC · method · pinnable

As declared

POST
eip155:8453
USDC
exact

Every tag is a field on the listing, not a keyword TOLL assigned.

Who is paid

0x9876af…612690

Takes payment for 11 endpoints on 10 hosts.

Among Market data

counted above95%

of 8,999 that carry counters

cheaper than73%

of 9,013 with a comparable price

9,301 endpoints are in this category. 809 declare exactly this price.

the comparison, 2026-10-12 05:54 UTC · method · live

Nearest on price

q verdict resourcewww.ax1.vc0.02 USDCmalformed
activities smarttraders smartmoneyx402.sniperx.fun0.02 USDCpass
stonk alerts invokeapi.solenrich.com0.02 USDCpass
grouped dailyx402stock.xyz0.02 USDCpass
analytics makersapi.onesource.io0.02 USDCpass

Same category, nearest declared price, one per payee wallet (method). the list, 2026-10-12 05:54 UTC · method · live

Elsewhere in the record

Cite this page

The pinned URL below renders this page from the snapshot of 2026-10-12 05:54 UTC and does not change; the live page does, every six hours. Data reuse is under CC BY 4.0 (terms).

Plain text

TOLL, "chain state on chainstate.schemasure.com", snapshot of 2026-10-12 05:54 UTC. https://tollindex.com/e/chainstate-schemasure-com-v1-chain-state-5c1ba7/at/2026-10-12T05-54Z. Accessed [access date].

BibTeX

@misc{toll-e-chainstate-schemasure-com-v1-chain-state-5c1ba7-2026-10-12T05-54Z,
  author = {TOLL},
  title = {chain state on chainstate.schemasure.com},
  howpublished = {\url{https://tollindex.com/e/chainstate-schemasure-com-v1-chain-state-5c1ba7/at/2026-10-12T05-54Z}},
  year = {2026},
  month = {10},
  note = {Pinned view of the snapshot of 2026-10-12 05:54 UTC. Accessed [access date].}
}

Reports and replies about this endpoint

None yet. Anything submitted through the form below is published here with its outcome.

Report an error about chain state, or reply as the named seller