Pith Number

pith:BHEGZFCU

pith:2012:BHEGZFCUHBHJOBIT2ULPUVYPV3

not attested not anchored not stored refs pending

Reliable estimation of the column density in Smoothed Particle Hydrodynamic simulations

Cathie J. Clarke, Erik Bertram, Matthew D. Young, Nick Moeckel

arxiv:1207.6513 v1 · 2012-07-27 · astro-ph.IM · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BHEGZFCUHBHJOBIT2ULPUVYPV3}

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	2026-05-18T01:56:06.705570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09c86c9454384e970513d516fa570faec7c181ef48609cf1a5fc0bb9b3e5dc8e

Aliases

arxiv: 1207.6513 · arxiv_version: 1207.6513v1 · doi: 10.48550/arxiv.1207.6513 · pith_short_12: BHEGZFCUHBHJ · pith_short_16: BHEGZFCUHBHJOBIT · pith_short_8: BHEGZFCU

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/BHEGZFCUHBHJOBIT2ULPUVYPV3 \
  | 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: 09c86c9454384e970513d516fa570faec7c181ef48609cf1a5fc0bb9b3e5dc8e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "739dedcb4b269c4bcb548363fb45fc8cee3fa274d3fd518a94887390a561c0ba",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-07-27T11:10:54Z",
    "title_canon_sha256": "20cc3f3ce72f491b89be756125df864c16b758aaab0f274be86e6c9f9acd9de3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.6513",
    "kind": "arxiv",
    "version": 1
  }
}