Pith Number

pith:7OJRBQSB

pith:2012:7OJRBQSBM5EDYQAT3ZWUK7YM7L

not attested not anchored not stored refs pending

The Wolf-Rayet Content of M31

Cyril Georgy, Kathryn F. Neugent, Philip Massey

arxiv:1209.1177 v1 · 2012-09-06 · astro-ph.SR · 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{7OJRBQSBM5EDYQAT3ZWUK7YM7L}

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	2026-05-18T01:54:39.605919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb9310c24167483c4013de6d457f0cfac6d8dd34bcd30be88542633fc49eda19

Aliases

arxiv: 1209.1177 · arxiv_version: 1209.1177v1 · doi: 10.48550/arxiv.1209.1177 · pith_short_12: 7OJRBQSBM5ED · pith_short_16: 7OJRBQSBM5EDYQAT · pith_short_8: 7OJRBQSB

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/7OJRBQSBM5EDYQAT3ZWUK7YM7L \
  | 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: fb9310c24167483c4013de6d457f0cfac6d8dd34bcd30be88542633fc49eda19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3e00f3941970e4044d85ea6f7a8ef48fb21ba75ae56e1c9f5ad7b79c6864ec4",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-09-06T04:53:52Z",
    "title_canon_sha256": "a09889b3f6f8bcd92d44ec51541b3e3af7e4378f664aba77c439b402f1dd4cfa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.1177",
    "kind": "arxiv",
    "version": 1
  }
}