Pith Number

pith:FOBTZSFX

pith:2026:FOBTZSFXLPUHH2PUVGDKWN7ZI6

not attested not anchored not stored refs pending

Verifying Restrictions on Frontier AI Research

Aaron Scher

arxiv:2606.28694 v1 · 2026-06-27 · cs.CY

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FOBTZSFXLPUHH2PUVGDKWN7ZI6}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-30T01:16:48.013342Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b833cc8b75be873e9f4a986ab37f947b7f00c72e006e686256350dd0d915faa

Aliases

arxiv: 2606.28694 · arxiv_version: 2606.28694v1 · doi: 10.48550/arxiv.2606.28694 · pith_short_12: FOBTZSFXLPUH · pith_short_16: FOBTZSFXLPUHH2PU · pith_short_8: FOBTZSFX

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/FOBTZSFXLPUHH2PUVGDKWN7ZI6 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: 2b833cc8b75be873e9f4a986ab37f947b7f00c72e006e686256350dd0d915faa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bafda4b7f7dcdda5fcb8ea6ed68764080bc41f26bfa42ab09cd342919516f78",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2026-06-27T02:27:55Z",
    "title_canon_sha256": "659c5ce835a002028c98837598d347ad59c7da729c86976d6e80a582e71bee43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.28694",
    "kind": "arxiv",
    "version": 1
  }
}