Pith Number

pith:AM3MQKCF

pith:2013:AM3MQKCFJBWDV4KRI2F3332DCR

not attested not anchored not stored refs pending

Security Type Systems as Recursive Predicates

Andrei Popescu

arxiv:1308.3472 v1 · 2013-08-15 · cs.CR · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AM3MQKCFJBWDV4KRI2F3332DCR}

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	2026-05-18T03:15:45.785138Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0336c82845486c3af151468bbdef431466712deb882aee97ef1bddb4b693fade

Aliases

arxiv: 1308.3472 · arxiv_version: 1308.3472v1 · doi: 10.48550/arxiv.1308.3472 · pith_short_12: AM3MQKCFJBWD · pith_short_16: AM3MQKCFJBWDV4KR · pith_short_8: AM3MQKCF

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/AM3MQKCFJBWDV4KRI2F3332DCR \
  | 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: 0336c82845486c3af151468bbdef431466712deb882aee97ef1bddb4b693fade

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d0cec79624a31be0d972d51b1a4ee7527401aeb0136553350587d65d0b85762",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2013-08-15T18:36:31Z",
    "title_canon_sha256": "6a03c10255d046a43b1d6d9624182fda4a42296000ce62e2b8bd25206935b5bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.3472",
    "kind": "arxiv",
    "version": 1
  }
}