Pith Number

pith:A45JIJFM

pith:2019:A45JIJFMSS5YII6WIBTNSJSCTU

not attested not anchored not stored refs pending

What Determines the Sizes of Bars in Spiral Galaxies?

Garching, Germany), Peter Erwin (1) ((1) Max-Planck-Institut fuer extraterrestrische Physik

arxiv:1908.08423 v2 · 2019-08-22 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{A45JIJFMSS5YII6WIBTNSJSCTU}

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	2026-07-05T00:06:54.948097Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

073a9424ac94bb8423d64066d926429d22b6bf42b4813f8a25d669dea47bdba1

Aliases

arxiv: 1908.08423 · arxiv_version: 1908.08423v2 · doi: 10.48550/arxiv.1908.08423 · pith_short_12: A45JIJFMSS5Y · pith_short_16: A45JIJFMSS5YII6W · pith_short_8: A45JIJFM

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/A45JIJFMSS5YII6WIBTNSJSCTU \
  | 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: 073a9424ac94bb8423d64066d926429d22b6bf42b4813f8a25d669dea47bdba1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ac8020d558f76ad235ba0c66b635e5535a80ebbccabcf9be3f80f854f607e9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-08-22T15:00:13Z",
    "title_canon_sha256": "60ebee5879e4cfebe650c8a32176fba3034f584235bd1013a22c60486e087041"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.08423",
    "kind": "arxiv",
    "version": 2
  }
}