Pith Number

pith:WWZM6MBE

pith:2017:WWZM6MBENDZDI2HFU65MGTM5AZ

not attested not anchored not stored refs pending

Fast calculation of entropy with Zhang's estimator

Antoni Lozano, Bernardino Casas, Chris Bentz, Ramon Ferrer-i-Cancho

arxiv:1707.08290 v1 · 2017-07-26 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WWZM6MBENDZDI2HFU65MGTM5AZ}

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	2026-05-18T00:39:24.698736Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5b2cf302468f23468e5a7bac34d9d065eca06b8b87b51fe721098faad6c2f84

Aliases

arxiv: 1707.08290 · arxiv_version: 1707.08290v1 · doi: 10.48550/arxiv.1707.08290 · pith_short_12: WWZM6MBENDZD · pith_short_16: WWZM6MBENDZDI2HF · pith_short_8: WWZM6MBE

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/WWZM6MBENDZDI2HFU65MGTM5AZ \
  | 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: b5b2cf302468f23468e5a7bac34d9d065eca06b8b87b51fe721098faad6c2f84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a80d2ba568a3f72a0d64677d772cd9a3c7f2ad8520bda5b9214af5eda8cc3d87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2017-07-26T05:11:58Z",
    "title_canon_sha256": "9ba038fd6a9c705ba6fa5a8fddf7ea7d1bb84e8dab7f5bac10e3d18c2b66f343"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08290",
    "kind": "arxiv",
    "version": 1
  }
}