Pith Number

pith:JKDM6PMT

pith:2014:JKDM6PMTY2GR5DU36A7ZDPGR6W

not attested not anchored not stored refs pending

The Increase of the Functional Entropy of the Human Brain with Age

B. Xu, C. B. Li, C. P. Lin, D. Waxman, J. F. Feng, W. L. Lu, Y. Yao

arxiv:1406.1976 v1 · 2014-06-08 · q-bio.QM · physics.med-ph · q-bio.NC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JKDM6PMTY2GR5DU36A7ZDPGR6W}

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	2026-05-18T02:50:12.059292Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4a86cf3d93c68d1e8e9bf03f91bcd1f5b84b95842b184d5504dd1e4140108610

Aliases

arxiv: 1406.1976 · arxiv_version: 1406.1976v1 · doi: 10.48550/arxiv.1406.1976 · pith_short_12: JKDM6PMTY2GR · pith_short_16: JKDM6PMTY2GR5DU3 · pith_short_8: JKDM6PMT

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/JKDM6PMTY2GR5DU36A7ZDPGR6W \
  | 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: 4a86cf3d93c68d1e8e9bf03f91bcd1f5b84b95842b184d5504dd1e4140108610

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01fa3896d62d7ec018cfe003b2eb3bef93142692fdcd945b8c2986c0a222d20c",
    "cross_cats_sorted": [
      "physics.med-ph",
      "q-bio.NC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.QM",
    "submitted_at": "2014-06-08T12:03:11Z",
    "title_canon_sha256": "82b146c86be7bcc7524e9c5a6f4f4c1f3445559425606b4dd6ba919f48110f0c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1406.1976",
    "kind": "arxiv",
    "version": 1
  }
}