Pith Number

pith:P2U7TDXF

pith:2014:P2U7TDXFMGI2KCDJL7WFNPI3MM

not attested not anchored not stored refs pending

The first stars: CEMP--no stars and signatures of spinstars

Andre Maeder, Cristina Chiappini, Georges Meynet

arxiv:1412.5754 v1 · 2014-12-18 · 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{P2U7TDXFMGI2KCDJL7WFNPI3MM}

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	2026-05-18T02:19:51.154397Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ea9f98ee56191a508695fec56bd1b633475dc7d21d278b85ca0b38944751cb1

Aliases

arxiv: 1412.5754 · arxiv_version: 1412.5754v1 · doi: 10.48550/arxiv.1412.5754 · pith_short_12: P2U7TDXFMGI2 · pith_short_16: P2U7TDXFMGI2KCDJ · pith_short_8: P2U7TDXF

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/P2U7TDXFMGI2KCDJL7WFNPI3MM \
  | 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: 7ea9f98ee56191a508695fec56bd1b633475dc7d21d278b85ca0b38944751cb1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b3128185b872b75dbfeae837599bcd2ea43df60f44ab59ac49bdc73bfe64d511",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-12-18T08:31:15Z",
    "title_canon_sha256": "cb2ea93c7c143eb6d07227d39753a1d506d9a19252b68c00c842915012eb091a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1412.5754",
    "kind": "arxiv",
    "version": 1
  }
}