Pith Number

pith:NOBC37UN

pith:2012:NOBC37UN7RFTCWEJX3TPYYZT5J

not attested not anchored not stored refs pending

A note on Shannon entropy

Tomasz Sobieszek

arxiv:1203.3322 v1 · 2012-03-15 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NOBC37UN7RFTCWEJX3TPYYZT5J}

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	2026-05-18T04:00:02.123328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b822dfe8dfc4b315889bee6fc6333ea77ed7172922e90481939dfe7d13dca48

Aliases

arxiv: 1203.3322 · arxiv_version: 1203.3322v1 · doi: 10.48550/arxiv.1203.3322 · pith_short_12: NOBC37UN7RFT · pith_short_16: NOBC37UN7RFTCWEJ · pith_short_8: NOBC37UN

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/NOBC37UN7RFTCWEJX3TPYYZT5J \
  | 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: 6b822dfe8dfc4b315889bee6fc6333ea77ed7172922e90481939dfe7d13dca48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2ca90009034643f69df9ae9b7a0d74a40641061bfb223a0be1f450485f018406",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-03-15T11:11:28Z",
    "title_canon_sha256": "47d2fedcc26c651090d40003577dee008daefb518bf9fa86bdff4c7d5b21d617"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3322",
    "kind": "arxiv",
    "version": 1
  }
}