Pith Number

pith:XEIFVODW

pith:2012:XEIFVODWL6P6BHHLFZQVJXCVOE

not attested not anchored not stored refs pending

The chemistry of extragalactic carbon stars

Catherine Walsh, Francisca Kemper, Martin A. Cordiner, Paul M. Woods

arxiv:1207.5519 v2 · 2012-07-23 · 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{XEIFVODWL6P6BHHLFZQVJXCVOE}

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	2026-05-18T01:56:08.783345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b9105ab8765f9fe09ceb2e6154dc55710bd66b18f213be15b2ac23f4b95cbecb

Aliases

arxiv: 1207.5519 · arxiv_version: 1207.5519v2 · doi: 10.48550/arxiv.1207.5519 · pith_short_12: XEIFVODWL6P6 · pith_short_16: XEIFVODWL6P6BHHL · pith_short_8: XEIFVODW

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/XEIFVODWL6P6BHHLFZQVJXCVOE \
  | 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: b9105ab8765f9fe09ceb2e6154dc55710bd66b18f213be15b2ac23f4b95cbecb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af3d4018164a4906b32c33b916407893676d61934f0e8de02a9e28b6c12312a1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-07-23T20:04:39Z",
    "title_canon_sha256": "1b46f0019e2c4cd8a997aac3933d7bf2753875e06c3c160a717810b79378c547"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.5519",
    "kind": "arxiv",
    "version": 2
  }
}