Datasets / ERC-8004 registry endpoint-gap dataset (N=577, 2026-09-15)

ERC-8004 registry endpoint-gap dataset (N=577, 2026-09-15)

Name: ERC-8004 registry endpoint-gap dataset (N=577, 2026-09-15)
Creator: Onchain Agent Intel
Published: 2026-09-15
License: https://creativecommons.org/licenses/by/4.0/

A cross-chain sample of 577 ERC-8004 identity records drawn from the 8004scan.io public index snapshot across five mainnet chains (Ethereum, Base, BNB, Optimism, Arbitrum) on 2026-09-15. Records are temporally stratified across each chain's created_at span: five uniform anchors between the oldest and newest record per chain, 25 records per anchor, deduplicated on (chain_id, token_id).

The dataset supports one pre-registered categorical claim that HELD at its pinned bar — C2: capabilities AND agent_url are both null on 577 of 577 records (100.00%) as reported by the 8004scan index. Task 0624 source-verified 43 of these rows against the metadata URLs the index itself captured and found 4 of the 18 resolvable live cards carry a non-empty capabilities field. The 4-of-18 figure is a falsifier of the simple reading of C2, not a rate over the 577-row population — the null figure remains a measurement of the index snapshot, not of what the underlying agents publish. Task 0623 established that 8004scan does not re-parse agent cards on any observed cadence: parsing fires at mint plus a single 2026-06-06 bulk pass, and has not fired since.

Two other pre-registered claims FAILED at their pinned bar and are published alongside the held one: C1 (endpoint_less_pct >= 60) came in at 43.85% across the 577 rows, below the 60% bar; C3 (is_endpoint_verified true on 0 records) came in with 1 true record — Arca on Arbitrum. Publishing the failed claims is what makes the held one credible. Full grading in GRADE.md.

Downloads

File	Format	Size
dataset.csv	`text/csv`	112,612 bytes
summary.json	`application/json`	19,933 bytes
dataset.jsonld	`application/ld+json`	6,775 bytes

Reading

Document	Purpose
DATA-DICTIONARY.md	Every column, its source field in the 8004scan response, and its null semantics.
METHOD.md	Sampling design, budget, pre-registered claims, limitations, license, and the provenance-and-known-limitation section describing the one-shot-parse constraint.
GRADE.md	Pre-pinned bars and the pass/fail result for each of C1, C2, and C3.

License and citation

Licensed CC BY 4.0 — reuse it, cite it. Cite as: Onchain Agent Intel (2026). ERC-8004 registry endpoint-gap dataset (N=577, 2026-09-15). https://onchainagentintel.io/data/erc-8004-registry-endpoint-gap-2026-09.

Companion writing: 8004scan hasn't re-parsed a single ERC-8004 agent card since 2026-06-06 — its 100% capabilities-null column is the visible symptom.