Pith Number

pith:FH6E7ANC

pith:2013:FH6E7ANCKS5N27QWAMMHSQ4CLL

not attested not anchored not stored refs pending

Towards a more realistic population of bright spiral galaxies in cosmological simulations

Cecilia Scannapieco, Michael Aumer, Simon White, Thorsten Naab

arxiv:1304.1559 v2 · 2013-04-04 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FH6E7ANCKS5N27QWAMMHSQ4CLL}

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	2026-05-18T03:18:20.005434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

29fc4f81a254badd7e1603187943825adbf1679f4bc2b29fa5beadf0248651a9

Aliases

arxiv: 1304.1559 · arxiv_version: 1304.1559v2 · doi: 10.48550/arxiv.1304.1559 · pith_short_12: FH6E7ANCKS5N · pith_short_16: FH6E7ANCKS5N27QW · pith_short_8: FH6E7ANC

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/FH6E7ANCKS5N27QWAMMHSQ4CLL \
  | 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: 29fc4f81a254badd7e1603187943825adbf1679f4bc2b29fa5beadf0248651a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b357b8b4e93e4d607ebf56743890e04f8eed9e69ceaea2cf6b73a323f33abcad",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-04-04T20:38:33Z",
    "title_canon_sha256": "a89f123ae4dd0e6cec34fcaf7ed51825732d08d8964e002f886ca4cfbfcaf9fc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.1559",
    "kind": "arxiv",
    "version": 2
  }
}