Pith Number

pith:GWYIPQPV

pith:2013:GWYIPQPVU5UGYX6YQAMFZWLXXY

not attested not anchored not stored refs pending

The lithium isotopic ratio in very metal-poor stars

Jorge Melendez, Karin Lind, Martin Asplund, Remo Collet, Zazralt Magic

arxiv:1305.6564 v1 · 2013-05-28 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GWYIPQPVU5UGYX6YQAMFZWLXXY}

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	2026-05-18T01:49:40.720218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35b087c1f5a7686c5fd880185cd977be2710f82c1aa4a3cfa4fd95177b816bc3

Aliases

arxiv: 1305.6564 · arxiv_version: 1305.6564v1 · doi: 10.48550/arxiv.1305.6564 · pith_short_12: GWYIPQPVU5UG · pith_short_16: GWYIPQPVU5UGYX6Y · pith_short_8: GWYIPQPV

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/GWYIPQPVU5UGYX6YQAMFZWLXXY \
  | 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: 35b087c1f5a7686c5fd880185cd977be2710f82c1aa4a3cfa4fd95177b816bc3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4adea111aebbb93127f31e48bad5fb7e530b5e2462382415898f7c194b186a2a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-05-28T17:30:08Z",
    "title_canon_sha256": "f9c9312722b97d7c12a476f3f15b21d1a73dab2e7d123158b9caf653e8a01244"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.6564",
    "kind": "arxiv",
    "version": 1
  }
}