Pith Number

pith:SHTYL7F2

pith:2012:SHTYL7F2P7GCQREZVSOBHISCEP

not attested not anchored not stored refs pending

The two-phase formation history of spiral galaxies traced by the cosmic evolution of the bar fraction

Fr\'ed\'eric Bournaud, Katarina Kraljic, Marie Martig

arxiv:1207.0351 v1 · 2012-07-02 · 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{SHTYL7F2P7GCQREZVSOBHISCEP}

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	2026-05-18T01:56:35.781923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91e785fcba7fcc284499ac9c13a24223e98ac186963e8eb8d85d08122225d834

Aliases

arxiv: 1207.0351 · arxiv_version: 1207.0351v1 · doi: 10.48550/arxiv.1207.0351 · pith_short_12: SHTYL7F2P7GC · pith_short_16: SHTYL7F2P7GCQREZ · pith_short_8: SHTYL7F2

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/SHTYL7F2P7GCQREZVSOBHISCEP \
  | 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: 91e785fcba7fcc284499ac9c13a24223e98ac186963e8eb8d85d08122225d834

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7d77783e7a120fe68a2ab55750256d7e3982f1a37d38d26b278f738178c6a15",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-07-02T11:59:12Z",
    "title_canon_sha256": "3a94602812e5c6666660de170f262309b09993eb8f45d7729156cd5c28efa1d7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.0351",
    "kind": "arxiv",
    "version": 1
  }
}