Pith Number

pith:XQBN3U2H

pith:2012:XQBN3U2HNLML2JHYE3VY64UJV3

not attested not anchored not stored refs pending

Programming errors in traversal programs over structured data

Markus Kaiser, Ralf Laemmel, Simon Thompson

arxiv:1201.6057 v1 · 2012-01-29 · 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{XQBN3U2HNLML2JHYE3VY64UJV3}

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	2026-05-18T04:03:33.807207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc02ddd3476ad8bd24f826eb8f7289aec99791ee647d0def5beaae063716e93a

Aliases

arxiv: 1201.6057 · arxiv_version: 1201.6057v1 · doi: 10.48550/arxiv.1201.6057 · pith_short_12: XQBN3U2HNLML · pith_short_16: XQBN3U2HNLML2JHY · pith_short_8: XQBN3U2H

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/XQBN3U2HNLML2JHYE3VY64UJV3 \
  | 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: bc02ddd3476ad8bd24f826eb8f7289aec99791ee647d0def5beaae063716e93a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8e6522664b333b1513cfd5a683048aafe921f700449c1bdca19439e3add07896",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2012-01-29T16:50:15Z",
    "title_canon_sha256": "e2f02d2dd74a9a8e2bfcf4c5f20e2e3b1a74a1176a8c0c3ff05e2b63e81b948c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.6057",
    "kind": "arxiv",
    "version": 1
  }
}