Pith Number

pith:TJFAPWAY

pith:2008:TJFAPWAYZHPTKHQSUVPPJFE5AY

not attested not anchored not stored refs pending

The formation of disk galaxies in computer simulations

ETH Zurich), Fabio Governato (University of Washington), Lucio Mayer (University of Zurich, Tobias Kaufmann (UC Irvine)

arxiv:0801.3845 v1 · 2008-01-25 · astro-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{TJFAPWAYZHPTKHQSUVPPJFE5AY}

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	2026-05-18T04:38:17.548690Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a4a07d818c9df351e12a55ef4949d063218e3752bd1e433abf712b9ec4db7c8

Aliases

arxiv: 0801.3845 · arxiv_version: 0801.3845v1 · doi: 10.48550/arxiv.0801.3845 · pith_short_12: TJFAPWAYZHPT · pith_short_16: TJFAPWAYZHPTKHQS · pith_short_8: TJFAPWAY

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/TJFAPWAYZHPTKHQSUVPPJFE5AY \
  | 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: 9a4a07d818c9df351e12a55ef4949d063218e3752bd1e433abf712b9ec4db7c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34487bff909829bac99e735aa6418a05bc81848a8f3e123d69056d4a62b972d6",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-01-25T20:01:32Z",
    "title_canon_sha256": "99dfa8f106ff63bddc7b39dc9ca78107cbf41a4d8e034d86959a03600ecddebd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0801.3845",
    "kind": "arxiv",
    "version": 1
  }
}