Pith Number

pith:SOITZ33F

pith:1994:SOITZ33FQUUUHZQKFLLIK7SBHN

not attested not anchored not stored refs pending

A New Parallel N-body Gravity Solver: TPM

Guohong Xu

arxiv:astro-ph/9409021 v1 · 1994-09-09 · 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{SOITZ33FQUUUHZQKFLLIK7SBHN}

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	2026-07-04T15:56:08.634291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93913cef65852943e60a2ad6857e413b700db4e96790f684bc3cbe4318d35848

Aliases

arxiv: astro-ph/9409021 · arxiv_version: astro-ph/9409021v1 · doi: 10.48550/arxiv.astro-ph/9409021 · pith_short_12: SOITZ33FQUUU · pith_short_16: SOITZ33FQUUUHZQK · pith_short_8: SOITZ33F

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/SOITZ33FQUUUHZQKFLLIK7SBHN \
  | 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: 93913cef65852943e60a2ad6857e413b700db4e96790f684bc3cbe4318d35848

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7855f7301fd014e77e76508fcc43da76bd2bdbc4e7a94e92ab50809fac8942ad",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1994-09-09T21:00:03Z",
    "title_canon_sha256": "8a72dd28bcb48f1faafa94f642dcc3859f015f9081167f8621ce14b3007a5a40"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9409021",
    "kind": "arxiv",
    "version": 1
  }
}