Pith Number

pith:FXVZWO6F

pith:2008:FXVZWO6F3KZDZNGEJSACVVN2JW

not attested not anchored not stored refs pending

How to Grow a Healthy Merger Tree

Chung-Pei Ma (UC Berkeley), Jun Zhang, Onsi Fakhouri

arxiv:0805.1230 v2 · 2008-05-09 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FXVZWO6F3KZDZNGEJSACVVN2JW}

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	2026-05-18T04:33:18.336591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2deb9b3bc5dab23cb4c44c802ad5ba4d9c68451829fa88920b4df66683055af0

Aliases

arxiv: 0805.1230 · arxiv_version: 0805.1230v2 · doi: 10.48550/arxiv.0805.1230 · pith_short_12: FXVZWO6F3KZD · pith_short_16: FXVZWO6F3KZDZNGE · pith_short_8: FXVZWO6F

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/FXVZWO6F3KZDZNGEJSACVVN2JW \
  | 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: 2deb9b3bc5dab23cb4c44c802ad5ba4d9c68451829fa88920b4df66683055af0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ddde82fd3999f5b92755ed216cb8864a8c7bb6e77d6ff2c2a2c0378df0e27a4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/3.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-05-09T00:29:11Z",
    "title_canon_sha256": "f3c9f89503df452bd2129963830c68c91e50a74d7d3619593294cedceed2263b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0805.1230",
    "kind": "arxiv",
    "version": 2
  }
}