Pith Number

pith:5ITRIUUU

pith:2017:5ITRIUUUA5HPPT2WBLL76S553H

not attested not anchored not stored refs pending

Divergence, Entropy, Information: An Opinionated Introduction to Information Theory

Philip Chodrow

arxiv:1708.07459 v2 · 2017-08-24 · cs.IT · math.IT · math.ST · physics.data-an · stat.TH

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5ITRIUUUA5HPPT2WBLL76S553H}

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	2026-05-17T23:50:38.869267Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea27145294074ef7cf560ad7ff4bbdd9cf6af6bfaa6b0af1df7e5639292c290d

Aliases

arxiv: 1708.07459 · arxiv_version: 1708.07459v2 · doi: 10.48550/arxiv.1708.07459 · pith_short_12: 5ITRIUUUA5HP · pith_short_16: 5ITRIUUUA5HPPT2W · pith_short_8: 5ITRIUUU

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/5ITRIUUUA5HPPT2WBLL76S553H \
  | 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: ea27145294074ef7cf560ad7ff4bbdd9cf6af6bfaa6b0af1df7e5639292c290d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "928890689e2897da4fe51064860b4f6db75a7168d51ba4c42a5de779f4267da8",
    "cross_cats_sorted": [
      "math.IT",
      "math.ST",
      "physics.data-an",
      "stat.TH"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2017-08-24T15:37:57Z",
    "title_canon_sha256": "b2ca65d8d4d495e7eaa94a442edc91c8958f511ca9f1b8795377612076d00d75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.07459",
    "kind": "arxiv",
    "version": 2
  }
}