Pith Number

pith:J2UI2ER2

pith:2011:J2UI2ER23QQ4FT6G3GYQPTCD73

not attested not anchored not stored refs pending

A sparse octree gravitational N-body code that runs entirely on the GPU processor

Evghenii Gaburov, Jeroen B\'edorf, Simon Portegies Zwart

arxiv:1106.1900 v2 · 2011-06-09 · astro-ph.IM · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J2UI2ER23QQ4FT6G3GYQPTCD73}

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	2026-05-18T03:58:14.136113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ea88d123adc21c2cfc6d9b107cc43fefd9aee45990dd19d6cb028f7faac5d7b

Aliases

arxiv: 1106.1900 · arxiv_version: 1106.1900v2 · doi: 10.48550/arxiv.1106.1900 · pith_short_12: J2UI2ER23QQ4 · pith_short_16: J2UI2ER23QQ4FT6G · pith_short_8: J2UI2ER2

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/J2UI2ER23QQ4FT6G3GYQPTCD73 \
  | 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: 4ea88d123adc21c2cfc6d9b107cc43fefd9aee45990dd19d6cb028f7faac5d7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3b741b55c2f0419747eafdcd145dbcf1c6b29a891778e0ffa2778f48d2d4c9f6",
    "cross_cats_sorted": [
      "cs.DC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-06-09T20:00:07Z",
    "title_canon_sha256": "0ea60a5294de19a9db8ed354f56ae1b722d022ecf415b84fda966380d5fa38eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.1900",
    "kind": "arxiv",
    "version": 2
  }
}