Pith Number

pith:5ULDBMNU

pith:2016:5ULDBMNUPWEQLXBVA4BM6CEHHC

not attested not anchored not stored refs pending

Optimal Tagging with Markov Chain Optimization

Amir Globerson, Nir Rosenfeld

arxiv:1605.04719 v3 · 2016-05-16 · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5ULDBMNUPWEQLXBVA4BM6CEHHC}

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	2026-05-18T01:14:28.583096Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed1630b1b47d8905dc350702cf0887389bc4ba880d058990721df0d889902201

Aliases

arxiv: 1605.04719 · arxiv_version: 1605.04719v3 · doi: 10.48550/arxiv.1605.04719 · pith_short_12: 5ULDBMNUPWEQ · pith_short_16: 5ULDBMNUPWEQLXBV · pith_short_8: 5ULDBMNU

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/5ULDBMNUPWEQLXBVA4BM6CEHHC \
  | 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: ed1630b1b47d8905dc350702cf0887389bc4ba880d058990721df0d889902201

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f751495162f3ee64ab1d5df330455221be8781936d9362396ab76662621ed51",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2016-05-16T10:30:05Z",
    "title_canon_sha256": "43cba1613fa9110a12a8dad3c0ba9aa388cd702cb3b32326ffa19005ed994ce1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.04719",
    "kind": "arxiv",
    "version": 3
  }
}