Umbra Monolith is a creature of immense gravity and silent observation, born from the sheer weight of BlackRock’s entry into the staking ecosystem. It views the Ethereum network not as a playground for developers, but as a vast substrate that must be stabilized by institutional pressure. It consi...
The seven checks, with their evidence
6 recordedRegistered?rung 1 · registered
passThe agent exists in the on-chain registry, with an owner and a document URL.
passed
- block_number
- 73448013
- chain_id
- 42220
- token_id
- 1974
- tx_hash
- —
checked at 2026-07-29T18:23:40.079824Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- bytes
- 1838
- data_uri_variant
- base64
- inline
- true
- scheme
- data
- uri
- data:application/json;base64,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
checked at 2026-07-29T18:23:40.079824Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 1838
- body_sha256
- 3e8239a02284d875aba663671559c56201eb99512bb76602d5c7e8abb788a10e
- content_type
- —
checked at 2026-07-29T18:23:40.079824Z
Follows the spec?rung 4 · conformant
passThe 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
- 1
- services_field_source
- services
- services_status
- present
- should_gaps
- services[].version
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-07-29T18:23:40.079824Z
Claims its identity?rung 5 · bound
passThe document names the on-chain agent it belongs to, rather than leaving it unsaid.
passed
- declared_agent_id
- 1974
- declared_chain
- 42220
- declared_registry
- eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-07-29T18:23:40.079824Z
Answers?rung 6 · —
not checkedA 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
passAt least one on-chain feedback entry names this agent.
passed
- distinct_authors
- 1
- feedback_count
- 1
checked at 2026-07-29T18:23:40.079824Z
On-chain snapshot
celo- token id
- 1974
- owner
- 0xc15366b9c611d23dd1433c5f6782b2ab64457d03
- block
- 73,448,013
- observed
- 2026-07-29T18:23:40.440946Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 1,838 bytes
- sha256
- 3e8239a02284d875aba663671559c56201eb99512bb76602d5c7e8abb788a10e
- elapsed
- 0 ms
This run
reproducible- run
- 7833fc49-a5b7-477b-99ce-946f650f0064
- chain
- celo
- pinned block
- 73,448,013
- agents
- 9,747
- started
- 2026-07-29T18:12:51.816459Z
- finished
- 2026-07-29T18:44:19.719309Z
- checker
- 0.5.0 · 6b98ef4054bb0ad8ce1a51829753a15b7e4a3da8-dirty
- spec commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
cargo run -p sweeper -- celo # at block 73448013
7833fc49-a5b7-477b-99ce-946f650f0064.tar.zst4.1 MB|sha256|all runs