Pith Number

pith:PWDPNEXK

pith:2003:PWDPNEXKRC3LYYVXPIPFJQSJLQ

not attested not anchored not stored refs pending

Entropy and information in neural spike trains: Progress on the sampling problem

Ilya Nemenman, Rob de Ruyter van Steveninck, William Bialek

arxiv:physics/0306063 v3 · 2003-06-07 · physics.data-an · physics.bio-ph · q-bio.NC · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PWDPNEXKRC3LYYVXPIPFJQSJLQ}

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	2026-07-04T15:52:46.894695Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7d86f692ea88b6bc62b77a1e54c2495c27c3eacf5f4cc17dac6bffd7c9befab8

Aliases

arxiv: physics/0306063 · arxiv_version: physics/0306063v3 · doi: 10.48550/arxiv.physics/0306063 · pith_short_12: PWDPNEXKRC3L · pith_short_16: PWDPNEXKRC3LYYVX · pith_short_8: PWDPNEXK

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/PWDPNEXKRC3LYYVXPIPFJQSJLQ \
  | 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: 7d86f692ea88b6bc62b77a1e54c2495c27c3eacf5f4cc17dac6bffd7c9befab8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "26c42093bedd2eafd28a7719efb59d6e1d24cd07a7956d0e2cc1fd106e621b2d",
    "cross_cats_sorted": [
      "physics.bio-ph",
      "q-bio.NC",
      "q-bio.QM"
    ],
    "license": "",
    "primary_cat": "physics.data-an",
    "submitted_at": "2003-06-07T21:22:50Z",
    "title_canon_sha256": "4365750e05d686841694619f8f38d0cc3d6babedae01834e3d3d6fcee03f3ee0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0306063",
    "kind": "arxiv",
    "version": 3
  }
}