Pith Number

pith:QFGQSNNV

pith:2013:QFGQSNNVLA4MGEV2M2WBPLI7PR

not attested not anchored not stored refs pending

Magnitude and size evolution of bulgeless galaxies

Sonali Sachdeva

arxiv:1307.6184 v1 · 2013-07-23 · 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{QFGQSNNVLA4MGEV2M2WBPLI7PR}

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	2026-05-18T00:44:46.386656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814d0935b55838c312ba66ac17ad1f7c7774015b3cbcd186ad9b34afba68900a

Aliases

arxiv: 1307.6184 · arxiv_version: 1307.6184v1 · doi: 10.48550/arxiv.1307.6184 · pith_short_12: QFGQSNNVLA4M · pith_short_16: QFGQSNNVLA4MGEV2 · pith_short_8: QFGQSNNV

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/QFGQSNNVLA4MGEV2M2WBPLI7PR \
  | 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: 814d0935b55838c312ba66ac17ad1f7c7774015b3cbcd186ad9b34afba68900a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc8f6a94831beea6bde16d7b9efcfe9f11e898cd97d30adf9e66ae26807f651b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-07-23T18:28:45Z",
    "title_canon_sha256": "3f10cde2c34772c1a0e41c451908da47ca0b233da5c57f4b9ab59f61a0f75386"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.6184",
    "kind": "arxiv",
    "version": 1
  }
}