Pith Number

pith:NJVPHDFQ

pith:2009:NJVPHDFQBNPIWDN4WIIQLV3KBI

not attested not anchored not stored refs pending

AstroSim: Collaborative Visualization of an Astrophysics Simulation in Second Life

Arturo Nakasone, Helmut Prendinger, Jun Makino, Kenichi Miura, Piet Hut, Simon Holland

arxiv:0911.5683 v1 · 2009-11-30 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NJVPHDFQBNPIWDN4WIIQLV3KBI}

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	2026-05-18T00:58:47.846017Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6a6af38cb00b5e8b0dbcb21105d76a0a263cb4c82b21c3f7920eed15f6c85aa0

Aliases

arxiv: 0911.5683 · arxiv_version: 0911.5683v1 · doi: 10.48550/arxiv.0911.5683 · pith_short_12: NJVPHDFQBNPI · pith_short_16: NJVPHDFQBNPIWDN4 · pith_short_8: NJVPHDFQ

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/NJVPHDFQBNPIWDN4WIIQLV3KBI \
  | 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: 6a6af38cb00b5e8b0dbcb21105d76a0a263cb4c82b21c3f7920eed15f6c85aa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4acf6740772de711f30785933df37ee84cb1cabad4584e28cd582492e32c853e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-11-30T05:07:04Z",
    "title_canon_sha256": "b5d20f9628fcc7452954dc9b41cc1d4fb68fbc6364830cd13474549188002077"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.5683",
    "kind": "arxiv",
    "version": 1
  }
}