Pith Number

pith:KX66GG2D

pith:2013:KX66GG2D6OHBQGZ7ID3YJNWGR2

not attested not anchored not stored refs pending

On the logical depth function

A. Souto (Technical University of Lissabon), A. Teixeira (University of Porto), L. Antunes (University of Porto), P.M.B. Vitanyi (CWI, University of Amsterdam)

arxiv:1301.4451 v2 · 2013-01-18 · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KX66GG2D6OHBQGZ7ID3YJNWGR2}

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	2026-05-18T03:19:13.205049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

55fde31b43f38e181b3f40f784b6c68ebecccf100056712629efca30da5b136d

Aliases

arxiv: 1301.4451 · arxiv_version: 1301.4451v2 · doi: 10.48550/arxiv.1301.4451 · pith_short_12: KX66GG2D6OHB · pith_short_16: KX66GG2D6OHBQGZ7 · pith_short_8: KX66GG2D

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/KX66GG2D6OHBQGZ7ID3YJNWGR2 \
  | 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: 55fde31b43f38e181b3f40f784b6c68ebecccf100056712629efca30da5b136d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "214893fe3568665301992e09feac95b5d97171a55cadad277609d166ffc5b18e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CC",
    "submitted_at": "2013-01-18T18:20:34Z",
    "title_canon_sha256": "1902d220f0270904af877a13005733d1a7630a67d4f79f88d026de8980304aac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.4451",
    "kind": "arxiv",
    "version": 2
  }
}