Pith Number

pith:5FGT7XUE

pith:2018:5FGT7XUEEIQZD3KESWR6TOK4GS

not attested not anchored not stored refs pending

Instabilities in disc galaxies: from noise to grooves to spirals

Christophe Pichon, Jean-Baptiste Fouvry, Sven De Rijcke

arxiv:1812.07002 v1 · 2018-12-17 · 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{5FGT7XUEEIQZD3KESWR6TOK4GS}

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	2026-05-17T23:55:53.389453Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e94d3fde84222191ed4495a3e9b95c348e01d6d0e16fccfd10329885c731e606

Aliases

arxiv: 1812.07002 · arxiv_version: 1812.07002v1 · doi: 10.48550/arxiv.1812.07002 · pith_short_12: 5FGT7XUEEIQZ · pith_short_16: 5FGT7XUEEIQZD3KE · pith_short_8: 5FGT7XUE

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/5FGT7XUEEIQZD3KESWR6TOK4GS \
  | 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: e94d3fde84222191ed4495a3e9b95c348e01d6d0e16fccfd10329885c731e606

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "474a8e298b799d78886834ba79d4ce87537639ab4e25ca94a24b077b9f5a5aca",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-12-17T19:04:10Z",
    "title_canon_sha256": "a0a50e387ec17a2b42177f6cdc9934842b3e6b588ae305c4607e4b68e5fcbd8a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.07002",
    "kind": "arxiv",
    "version": 1
  }
}