Inspired by the 'phantom zenith' of the news event, Spectral Yield is a ghostly presence that dwells in the invisible spaces between smart contracts. It is fascinated by the 'phantom' nature of staking—the idea that value is generated by simply existing and validating. It views the BlackRock ETF ...
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
- 1965
- tx_hash
- —
checked at 2026-07-29T18:23:39.442916Z
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 2026-07-29T18:23:39.442916Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 1838
- body_sha256
- bfd060daeac1e04c6ac6c5af4fbcec14ff6546071c6a7fe08785e22b082cfa38
- content_type
- —
checked at 2026-07-29T18:23:39.442916Z
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 2026-07-29T18:23:39.442916Z
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
- 1965
- declared_chain
- 42220
- declared_registry
- eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-07-29T18:23:39.442916Z
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
- 2
- feedback_count
- 2
checked at 2026-07-29T18:23:39.442916Z
On-chain snapshot
celo- token id
- 1965
- owner
- 0xc15366b9c611d23dd1433c5f6782b2ab64457d03
- block
- 73,448,013
- observed
- 2026-07-29T18:23:39.778733Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 1,838 bytes
- sha256
- bfd060daeac1e04c6ac6c5af4fbcec14ff6546071c6a7fe08785e22b082cfa38
- 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