Pith Number

pith:YSO5QKI4

pith:2011:YSO5QKI43T5YYTJFHZKRUX4CSV

not attested not anchored not stored refs pending

Molecular gas in the inner 0.7kpc-radius ring of M31

Anne-Laure Melchior, Francoise Combes

arxiv:1103.3392 v2 · 2011-03-17 · 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{YSO5QKI43T5YYTJFHZKRUX4CSV}

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	2026-05-18T02:02:50.370289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c49dd8291cdcfb8c4d253e551a5f829562e5878b68c1d1fd7b8d835987432711

Aliases

arxiv: 1103.3392 · arxiv_version: 1103.3392v2 · doi: 10.48550/arxiv.1103.3392 · pith_short_12: YSO5QKI43T5Y · pith_short_16: YSO5QKI43T5YYTJF · pith_short_8: YSO5QKI4

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/YSO5QKI43T5YYTJFHZKRUX4CSV \
  | 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: c49dd8291cdcfb8c4d253e551a5f829562e5878b68c1d1fd7b8d835987432711

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "722857f635499ab263d3b02fed8420a7f1168cd21cc76afc945cf25414801abf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-17T12:30:09Z",
    "title_canon_sha256": "8959fdb9ead79a4e8b94dd3cb12d29cf5f152de32a9b1e88960b60c01f32c8c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.3392",
    "kind": "arxiv",
    "version": 2
  }
}