Pith Number

pith:AQXYYGXQ

pith:2013:AQXYYGXQAGM62FRJRPURLQ6HNK

not attested not anchored not stored refs pending

A weak HOAS approach to the POPLmark Challenge

Alberto Ciaffaglione (Dipartimento di Matematica e Informatica, Italia), Ivan Scagnetto (Dipartimento di Matematica e Informatica, Universit\`a di Udine

arxiv:1303.7332 v1 · 2013-03-29 · cs.LO · 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{AQXYYGXQAGM62FRJRPURLQ6HNK}

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	2026-05-18T03:29:28.801164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

042f8c1af00199ed16298be915c3c76a95d3e7bbf26bfa3d4c87bc1a3e096d8b

Aliases

arxiv: 1303.7332 · arxiv_version: 1303.7332v1 · doi: 10.48550/arxiv.1303.7332 · pith_short_12: AQXYYGXQAGM6 · pith_short_16: AQXYYGXQAGM62FRJ · pith_short_8: AQXYYGXQ

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/AQXYYGXQAGM62FRJRPURLQ6HNK \
  | 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: 042f8c1af00199ed16298be915c3c76a95d3e7bbf26bfa3d4c87bc1a3e096d8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e03cf7ad11c41fc2d2ffd118edfa4df292df4f9b6116731dff41c91902ab03b8",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2013-03-29T09:02:20Z",
    "title_canon_sha256": "06159f73546468fab6d98df0525bc4be9b2bd65f5c01824ce44c3f19a06ea901"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1303.7332",
    "kind": "arxiv",
    "version": 1
  }
}