Pith Number

pith:PRBD6GUC

pith:2014:PRBD6GUCI7PWMFHDU75GQXBWGB

not attested not anchored not stored refs pending

Population aging through survival of the fit and stable

Guy Bunin, Jorge Kurchan, Tommaso Brotto

arxiv:1407.4669 v2 · 2014-07-17 · physics.bio-ph · q-bio.PE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PRBD6GUCI7PWMFHDU75GQXBWGB}

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	2026-05-18T01:31:03.841671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c423f1a8247df6614e3a7fa685c363056a35c44f3032237746523568a6e76cb

Aliases

arxiv: 1407.4669 · arxiv_version: 1407.4669v2 · doi: 10.48550/arxiv.1407.4669 · pith_short_12: PRBD6GUCI7PW · pith_short_16: PRBD6GUCI7PWMFHD · pith_short_8: PRBD6GUC

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/PRBD6GUCI7PWMFHDU75GQXBWGB \
  | 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: 7c423f1a8247df6614e3a7fa685c363056a35c44f3032237746523568a6e76cb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b66c61310ded0aca73cb247a9c91cdd349497730ec96edee6ee378388320e348",
    "cross_cats_sorted": [
      "q-bio.PE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.bio-ph",
    "submitted_at": "2014-07-17T13:52:33Z",
    "title_canon_sha256": "c2f7f5d4cda76e09d9bc970e46ee7c7b374d2c05fd717d7436e9eec954e34333"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.4669",
    "kind": "arxiv",
    "version": 2
  }
}