Pith Number

pith:HNPHI7KI

pith:1997:HNPHI7KIUXX7SUJKDJ5OFNY6HL

not attested not anchored not stored refs pending

Parallel TreeSPH

John Dubinski, Lars Hernquist (UCSC), Romeel Dave'

arxiv:astro-ph/9701113 v1 · 1997-01-17 · astro-ph · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HNPHI7KIUXX7SUJKDJ5OFNY6HL}

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	2026-05-18T01:07:40.271585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b5e747d48a5eff9512a1a7ae2b71e3ae3a0f5ef281637d97e39440f1de4872e

Aliases

arxiv: astro-ph/9701113 · arxiv_version: astro-ph/9701113v1 · doi: 10.48550/arxiv.astro-ph/9701113 · pith_short_12: HNPHI7KIUXX7 · pith_short_16: HNPHI7KIUXX7SUJK · pith_short_8: HNPHI7KI

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/HNPHI7KIUXX7SUJKDJ5OFNY6HL \
  | 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: 3b5e747d48a5eff9512a1a7ae2b71e3ae3a0f5ef281637d97e39440f1de4872e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3ecf34da111e713515f7208b081f485c01fb02f61a413e476abba4ba7c81cb59",
    "cross_cats_sorted": [
      "physics.comp-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-01-17T00:02:12Z",
    "title_canon_sha256": "ba6f47b315c712f22542f1f2714e799fab27cab79a50c626d2159b8f062e4c99"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9701113",
    "kind": "arxiv",
    "version": 1
  }
}