Pith Number

pith:O7WNVEYA

pith:2012:O7WNVEYANZT7ISFQPO6ID6KSSC

not attested not anchored not stored refs pending

Can Galactic chemical evolution explain the oxygen isotopic variations in the Solar System?

Kurt Liffman, Maria Lugaro, Sarah T. Maddison, Trevor R. Ireland

arxiv:1209.2240 v1 · 2012-09-11 · astro-ph.SR · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O7WNVEYANZT7ISFQPO6ID6KSSC}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:54:30.703717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

77ecda93006e67f448b07bbc81f95290b0e27b26301218e800149d9dff8a854f

Aliases

arxiv: 1209.2240 · arxiv_version: 1209.2240v1 · doi: 10.48550/arxiv.1209.2240 · pith_short_12: O7WNVEYANZT7 · pith_short_16: O7WNVEYANZT7ISFQ · pith_short_8: O7WNVEYA

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/O7WNVEYANZT7ISFQPO6ID6KSSC \
  | 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: 77ecda93006e67f448b07bbc81f95290b0e27b26301218e800149d9dff8a854f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adb2e01c74caa7409f825b5fc798de2fc689e58f4d8fd9fede1d5f39e9168030",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-09-11T06:43:09Z",
    "title_canon_sha256": "78db4933fd7938a00aab6c0b75bba5e04c1dc515804c50cd4aae33661144d368"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2240",
    "kind": "arxiv",
    "version": 1
  }
}