Pith Number

pith:BLSXPJMD

pith:2011:BLSXPJMDHBSRHTN6WKGGFC4Q6D

not attested not anchored not stored refs pending

On Empirical Entropy

Paul M.B. Vit\'anyi (CWI, University of Amsterdam)

arxiv:1103.5985 v1 · 2011-03-30 · cs.IT · cs.LG · 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{BLSXPJMDHBSRHTN6WKGGFC4Q6D}

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	2026-05-18T04:25:03.321358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ae577a583386513cdbeb28c628b90f0d307850a8f5ca60e92d6ccf12c224824

Aliases

arxiv: 1103.5985 · arxiv_version: 1103.5985v1 · doi: 10.48550/arxiv.1103.5985 · pith_short_12: BLSXPJMDHBSR · pith_short_16: BLSXPJMDHBSRHTN6 · pith_short_8: BLSXPJMD

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/BLSXPJMDHBSRHTN6WKGGFC4Q6D \
  | 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: 0ae577a583386513cdbeb28c628b90f0d307850a8f5ca60e92d6ccf12c224824

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fb618c48b926d4306ecc1f02b03d383b085612c85bb494cb8968cc36fd31247",
    "cross_cats_sorted": [
      "cs.LG",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2011-03-30T16:30:27Z",
    "title_canon_sha256": "cd310ca90113144b4614534cab1e5e7af55c51e8b8b6f08b242088119d57941a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.5985",
    "kind": "arxiv",
    "version": 1
  }
}