Pith Number

pith:CL37YDQJ

pith:2000:CL37YDQJQOBOVON25OZ2UFKIY7

not attested not anchored not stored refs pending

Simulating the effects of intergalactic grey dust

Lars Hernquist (CfA), Neal Katz (UMass), Romeel Dave' (Princeton), Rupert A.C. Croft (CfA)

arxiv:astro-ph/0002422 v1 · 2000-02-23 · 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{CL37YDQJQOBOVON25OZ2UFKIY7}

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	2026-05-18T01:32:19.482173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

12f7fc0e098382eab9baebb3aa1548c7f75dd2761615409692e7c71815aec051

Aliases

arxiv: astro-ph/0002422 · arxiv_version: astro-ph/0002422v1 · doi: 10.48550/arxiv.astro-ph/0002422 · pith_short_12: CL37YDQJQOBO · pith_short_16: CL37YDQJQOBOVON2 · pith_short_8: CL37YDQJ

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/CL37YDQJQOBOVON25OZ2UFKIY7 \
  | 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: 12f7fc0e098382eab9baebb3aa1548c7f75dd2761615409692e7c71815aec051

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8518d9c171fc393542870706419a443ca9b50c68d53b6b3cd6786e875d58e019",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-23T01:08:52Z",
    "title_canon_sha256": "47bf788012eccfdce272f04cc23a5195210c52d7579edf62a39bfb516e605d96"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002422",
    "kind": "arxiv",
    "version": 1
  }
}