Pith Number

pith:55FW5RHT

pith:2007:55FW5RHT7EUQDLHJYLXOUSAEBV

not attested not anchored not stored refs pending

High Performance Direct Gravitational N-body Simulations on Graphics Processing Units

Peter Geldof, Robert Belleman, Simon Portegies Zwart

arxiv:cs/0702135 v1 · 2007-02-23 · cs.PF

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{55FW5RHT7EUQDLHJYLXOUSAEBV}

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	2026-05-18T01:39:25.103426Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef4b6ec4f3f92901ace9c2eeea48040d53f28c1e30d749df7485a7137778dfd6

Aliases

arxiv: cs/0702135 · arxiv_version: cs/0702135v1 · doi: 10.48550/arxiv.cs/0702135 · pith_short_12: 55FW5RHT7EUQ · pith_short_16: 55FW5RHT7EUQDLHJ · pith_short_8: 55FW5RHT

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/55FW5RHT7EUQDLHJYLXOUSAEBV \
  | 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: ef4b6ec4f3f92901ace9c2eeea48040d53f28c1e30d749df7485a7137778dfd6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "60ba9a4ac509e4bdf5ee73c6c8bb6590c29c9296bf4bbad8b1cadefed0a5b9ec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "cs.PF",
    "submitted_at": "2007-02-23T09:44:17Z",
    "title_canon_sha256": "d2b059c347fbf2084caebc7bcd3bc50e54e7ed2d1421ba2fc8b7820b105eb807"
  },
  "schema_version": "1.0",
  "source": {
    "id": "cs/0702135",
    "kind": "arxiv",
    "version": 1
  }
}