Agent

HashProof

celo|id 9669|owner 0x2170bc5e5eeb2bbf3172abf2716d8bbb729d2ab6

Checks 1–7

Verifiable credentials API on Celo and Base. Issue trusted digital certificates with one API call for $0.10 USDC via x402 — no account, no API key. Each credential is registered on-chain in the CredentialRegistry contract on Celo (0x7a1B759A602Aba72a70f99Dffd0a386d7504ce9B), pinned to IPFS, and comes with a PDF with a QR code anyone can scan to verify for free against three independent sources. Agent-usable end to end: discover required fields at GET /templates/:ref/requirements (free), then POST /issueCredential paying x402 with USDC on Base (eip155:8453) or Celo (eip155:42220). Full agent guide at https://hashproof.dev/skill.md.

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

7 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
74443315
chain_id
42220
owner
0x2170bc5e5eeb2bbf3172abf2716d8bbb729d2ab6
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
9669
tx_hash
0x5b898a3892c6db0d7f38f2c4f9e4ffefc1daeffec4c9a750ddc42f6b25cf132b
checked at 2026-08-10T07:06:23.443308Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
530
final_url
https://www.hashproof.dev/metadata.json
http_status
200
request_url
https://www.hashproof.dev/metadata.json
scheme
https
uri
https://www.hashproof.dev/metadata.json
checked at 2026-08-10T07:06:23.443308Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
2081
body_sha256
7888d944d4c17974653baf1986f70c3fb798b684ae27e40ba948fcc71a0f78bd
content_type
application/json; charset=utf-8
checked at 2026-08-10T07:06:23.443308Z
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
(empty)
must_violations
(empty)
registrations_checked
2
services_field_source
services
services_status
present
should_gaps
services[].version
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-08-10T07:06:23.443308Z
Claims its identity?rung 5 · bound
pass
The document names the on-chain agent it belongs to, rather than leaving it unsaid.
passed
declared_agent_id
9669
declared_chain
42220
declared_registry
eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
true
registrations_seen
2
checked at 2026-08-10T07:06:23.443308Z
Answers?rung 6 · live
pass
A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
endpoints
{"declared":"https://hashproof.dev","elapsed_ms":322,"final_url":"https://www.hashproof.dev/","http_status":200,"index":0,"kind":"https","name":"web","outcome":"live","probed":true,"probed_url":"https://hashproof.dev"}, {"declared":"https://api.hashproof.dev/issueCredential","elapsed_ms":1521,"final_url":"https://api.hashproof.dev/issueCredential","http_status":402,"index":1,"kind":"https","name":"x402-issue-credential","outcome":"live","payment_gated":true,"probed":true,"probed_url":"https://api.hashproof.dev/issueCredential"}, {"declared":"https://api.hashproof.dev/mcp","elapsed_ms":1113,"final_url":"https://api.hashproof.dev/mcp","http_status":405,"index":2,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://api.hashproof.dev/mcp"}, {"declared":"https://hashproof.dev/skill.md","elapsed_ms":537,"final_url":"https://www.hashproof.dev/skill.md","http_status":200,"index":3,"kind":"https","name":"skill","outcome":"live","probed":true,"probed_url":"https://hashproof.dev/skill.md"}, {"declared":"eip155:42220:0x0a25C91209a158D0a4922837cdd590aCe0D13f0d","index":4,"kind":"caip10","name":"agentWallet","probed":false}, {"declared":"https://api.hashproof.dev/","elapsed_ms":930,"final_url":"https://api.hashproof.dev/","http_status":200,"index":5,"kind":"https","name":"OASF","outcome":"live","probed":true,"probed_url":"https://api.hashproof.dev/"}
endpoints_answered_not_live
1
endpoints_declared
6
endpoints_live
4
endpoints_our_error
0
endpoints_payment_gated
1
endpoints_probeable
5
endpoints_probed
5
endpoints_refused
0
checked at 2026-08-10T07:07:52.226139Z
Has feedback?rung 7 · attested
fail
At least one on-chain feedback entry names this agent.
did not pass
distinct_authors
0
feedback_count
0
reason
no_feedback
checked at 2026-08-10T07:06:23.443308Z

On-chain snapshot

celo

token id: 9669
owner: 0x2170bc5e5eeb2bbf3172abf2716d8bbb729d2ab6
block: 74,443,315
observed: 2026-08-10T07:06:23.445659Z

tokenURIopen →

https://www.hashproof.dev/metadata.json

What the fetch saw

https

scheme: https
request url: https://www.hashproof.dev/metadata.json
final url: https://www.hashproof.dev/metadata.json
http status: 200
content type: application/json; charset=utf-8
size: 2,081 bytes
sha256: 7888d944d4c17974653baf1986f70c3fb798b684ae27e40ba948fcc71a0f78bd
elapsed: 530 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: 4131a5a1-0461-46ce-b393-bcd825d2113b
chain: celo
pinned block: 74,443,315
agents: 9,765
started: 2026-08-10T06:41:13.909696Z
finished: 2026-08-10T07:06:42.747601Z
checker: 0.7.0 · 55deaa9ce71c025a9199311a53cdc2de236eae53
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- celo   # at block 74443315

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 · live

Has feedback?rung 7 · attested

On-chain snapshot

What the fetch saw

This run