Pith Number

pith:MQ64ZQ2H

pith:2019:MQ64ZQ2HU4CG4MD3RQPSJI5QQY

not attested not anchored not stored refs pending

General relativistic smoothed particle hydrodynamics

Daniel J. Price, David Liptai

arxiv:1901.08064 v1 · 2019-01-23 · astro-ph.IM · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MQ64ZQ2HU4CG4MD3RQPSJI5QQY}

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	2026-05-17T23:55:37.952336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

643dccc347a7046e307b8c1f24a3b08632cebccdffbdc7cd9fc65973e3dcedcd

Aliases

arxiv: 1901.08064 · arxiv_version: 1901.08064v1 · doi: 10.48550/arxiv.1901.08064 · pith_short_12: MQ64ZQ2HU4CG · pith_short_16: MQ64ZQ2HU4CG4MD3 · pith_short_8: MQ64ZQ2H

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/MQ64ZQ2HU4CG4MD3RQPSJI5QQY \
  | 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: 643dccc347a7046e307b8c1f24a3b08632cebccdffbdc7cd9fc65973e3dcedcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "86efd6f259d0de8f0e869c20116973c2577752bca7df72086b53db13b9cb1f5a",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-01-23T19:00:00Z",
    "title_canon_sha256": "c6e92810c9b5ca9244287c4ee16a1e29ed285c3b8a1110995cd3061684ed809c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.08064",
    "kind": "arxiv",
    "version": 1
  }
}