Pith Number

pith:7JKZPHL7

pith:2009:7JKZPHL76XR6SZNADAECOKVFRG

not attested not anchored not stored refs pending

HI kinematics and dynamics of Messier 31

(2) Universite de Montreal, 3), (3) Observatoire d'Astrophysique de l'Universite de Ouagadougou, (4) Brandon University), Claude Carignan (2, Laurent Chemin (1), Tyler Foster (4) ((1) Observatoire de Paris

arxiv:0909.3846 v1 · 2009-09-21 · 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{7JKZPHL76XR6SZNADAECOKVFRG}

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	2026-05-18T02:34:29.344300Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa55979d7ff5e3e965a01808272aa589993f5c0670715d0103c1737bfb3c81b4

Aliases

arxiv: 0909.3846 · arxiv_version: 0909.3846v1 · doi: 10.48550/arxiv.0909.3846 · pith_short_12: 7JKZPHL76XR6 · pith_short_16: 7JKZPHL76XR6SZNA · pith_short_8: 7JKZPHL7

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/7JKZPHL76XR6SZNADAECOKVFRG \
  | 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: fa55979d7ff5e3e965a01808272aa589993f5c0670715d0103c1737bfb3c81b4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bb811b063f2b8d195b0bc8d7e2c6c782a58ea2fb0b190368f5319d6d44b6b52",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-21T20:00:24Z",
    "title_canon_sha256": "e326b80779faf84213f9c6004b4c4a1864fa8afcfee4adce6115aaf2d57400aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3846",
    "kind": "arxiv",
    "version": 1
  }
}