Pith Number

pith:XOGFX7XZ

pith:2015:XOGFX7XZG5QSSUV2BJ4PBOUWSZ

not attested not anchored not stored refs pending

Novel Adaptive softening for collisionless N-body simulations: Eliminating spurious halos

Alexander Hobbs, Chris Power, Francesca Iannuzzi, Justin Read, Oscar Agertz

arxiv:1503.02689 v1 · 2015-03-09 · astro-ph.CO · 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{XOGFX7XZG5QSSUV2BJ4PBOUWSZ}

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	2026-05-18T01:20:11.971378Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb8c5bfef937612952ba0a78f0ba96965f35d19137f7184d48b20d8d3ba1bed7

Aliases

arxiv: 1503.02689 · arxiv_version: 1503.02689v1 · doi: 10.48550/arxiv.1503.02689 · pith_short_12: XOGFX7XZG5QS · pith_short_16: XOGFX7XZG5QSSUV2 · pith_short_8: XOGFX7XZ

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/XOGFX7XZG5QSSUV2BJ4PBOUWSZ \
  | 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: bb8c5bfef937612952ba0a78f0ba96965f35d19137f7184d48b20d8d3ba1bed7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4db65102a66d28313c4c3d27f5e58e4a8ff92163ba1ac57fe7819a377522de9d",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2015-03-09T20:51:25Z",
    "title_canon_sha256": "8cccbf703127750c4356a27f71b7618d405b0655f291c9b2c79e0851d8b53235"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02689",
    "kind": "arxiv",
    "version": 1
  }
}