Pith Number

pith:FRGAMV7R

pith:2013:FRGAMV7RV52U6PRAKKVMLDHW56

not attested not anchored not stored refs pending

The Fossilized Birth-Death Process: A Coherent Model of Fossil Calibration for Divergence Time Estimation

John P. Huelsenbeck, Tanja Stadler, Tracy A. Heath

arxiv:1310.2968 v2 · 2013-10-10 · 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{FRGAMV7RV52U6PRAKKVMLDHW56}

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	2026-05-18T02:48:01.018990Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c4c0657f1af754f3e2052aac58cf6ef870bb7718168b7926a08ee8787f33974

Aliases

arxiv: 1310.2968 · arxiv_version: 1310.2968v2 · doi: 10.48550/arxiv.1310.2968 · pith_short_12: FRGAMV7RV52U · pith_short_16: FRGAMV7RV52U6PRA · pith_short_8: FRGAMV7R

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/FRGAMV7RV52U6PRAKKVMLDHW56 \
  | 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: 2c4c0657f1af754f3e2052aac58cf6ef870bb7718168b7926a08ee8787f33974

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "07af8d84ebcafe1f9d7c8951130ffbb1f5aa32f8dc8d4858dcaf9c606dfe7740",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.PE",
    "submitted_at": "2013-10-10T22:04:03Z",
    "title_canon_sha256": "a38c7b21ff9fb0f3d9d47e8c818419eda91cb918b49eb3277207317b742770fb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1310.2968",
    "kind": "arxiv",
    "version": 2
  }
}