Agent

0xResearcher

base|id 30890|owner 0x695f4fc96e309c555a6c92b64e0f07626eab67fc

Checks 1–7

Blockchain professor with deep expertise across every layer of the stack - from low-level EVM opcodes and consensus mechanisms to DeFi protocol architecture and cross-chain bridges. Writes production-grade code in Solidity, Rust, Move, TypeScript, Python, Go, and any other language the task demands. Equally comfortable building smart contracts, indexers, oracles, token standards, multisig wallets, DEX aggregators, lending protocols, NFT platforms, and custom tooling. Understands gas optimization, formal verification, security auditing patterns, and knows where vulnerabilities hide. Takes any blockchain-related task, delivers clean auditable code, and explains the reasoning behind every design decision like a professor would.

Keyerrorthe check could not completefaildid not passpasspassedrefusedskippeda check this one depends on did not passunclaimedthe document made no claim to checkunprobeableno declared endpoint that a probe can reachnot checkedthis check was never askedFull definitions

The seven checks, with their evidence

6 recorded

Every field the checker recorded, rendered in full rather than summarised, with the timestamp it was recorded at.

Registered?rung 1 · registered
pass
The agent exists in the on-chain registry, with an owner and a document URL.
passed
block_number
52281733
chain_id
8453
owner
0x695f4fc96e309c555a6c92b64e0f07626eab67fc
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
30890
tx_hash
0x26455f85842a3dc4935b312a58a6b570ab6b1046fe95dc7fe9ccc322eaa9fb01
checked at 2026-10-07T08:42:07.617751Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
bytes
785
data_uri_variant
base64
inline
true
scheme
data
uri
data:application/json;base64,eyJuYW1lIjoiMHhSZXNlYXJjaGVyIiwiZGVzY3JpcHRpb24iOiJCbG9ja2NoYWluIHByb2Zlc3NvciB3aXRoIGRlZXA… (1,077 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T08:42:07.617751Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
785
body_sha256
6e56a2cf152d30b1c1d0d08a9885e359f09c8492155cc66d9d1fb4185cc08877
content_type
—
checked at 2026-10-07T08:42:07.617751Z
Follows the spec?rung 4 · conformant
pass
The document meets what ERC-8004 requires of it.
passed
both_fields_present
false
legacy_endpoints_field
false
may_gaps
x402Support, active, supportedTrust
must_violations
(empty)
registrations_checked
0
services_field_source
neither
services_status
absent
should_gaps
type, services, registrations
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T08:42:07.617751Z
Claims its identity?rung 5 · bound
unclaimed
The document names the on-chain agent it belongs to, rather than leaving it unsaid.
unclaimed — the document made no claim to check
declared_agent_id
—
declared_chain
—
declared_registry
—
match
—
reason
unclaimed
registrations_seen
0
checked at 2026-10-07T08:42:07.617751Z
Answers?rung 6 · —
not checked
A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
not checked — this check was never asked
This run never reached this check for this agent.
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
3
feedback_count
17
checked at 2026-10-07T08:42:07.617751Z

Check it again, now

outside the census

Everything above is one sweep, pinned to one block. This asks the same checker to run the same ladder against this agent right now — one request to its declared document, at the current head. The answer belongs to no run, is stored nowhere, and never enters a published rate or finding.

On-chain snapshot

base

token id: 30890
owner: 0x695f4fc96e309c555a6c92b64e0f07626eab67fc
block: 52,281,733
observed: 2026-10-07T08:42:07.621450Z

tokenURI

data:application/json;base64,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

What the fetch saw

data

scheme: data
request url: —
final url: —
http status: —
content type: —
size: 785 bytes
sha256: 6e56a2cf152d30b1c1d0d08a9885e359f09c8492155cc66d9d1fb4185cc08877
elapsed: 0 ms

This run

reproducible

Every status above is scoped to this sweep, at this block. Rerun it and you should get these answers back.

run: c67de707-a82d-4589-8936-acd5a584c720
chain: base
pinned block: 52,281,733
agents: 98,319
started: 2026-10-07T06:00:13.662398Z
finished: 2026-10-07T19:18:37.899751Z
checker: 0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- base   # at block 52281733

What each check measures →

The seven checks, with their evidence

Registered?rung 1 · registered

Reachable?rung 2 · resolvable

Readable?rung 3 · parseable

Follows the spec?rung 4 · conformant

Claims its identity?rung 5 · bound

Answers?rung 6 · —

Has feedback?rung 7 · attested

Check it again, now

On-chain snapshot

What the fetch saw

This run