Pith Number

pith:2ZAEXLB4

pith:2005:2ZAEXLB4EJHZKBVFETUYIYPQGY

not attested not anchored not stored refs pending

Improved helium line formation for EHe stars

C.S. Jeffery, K. Butler, N. Przybilla, U. Heber

arxiv:astro-ph/0512152 v1 · 2005-12-06 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ZAEXLB4EJHZKBVFETUYIYPQGY}

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	2026-07-04T14:51:27.171618Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d6404bac3c224f9506a524e98461f03600c472255c23b497f6422ed430966013

Aliases

arxiv: astro-ph/0512152 · arxiv_version: astro-ph/0512152v1 · doi: 10.48550/arxiv.astro-ph/0512152 · pith_short_12: 2ZAEXLB4EJHZ · pith_short_16: 2ZAEXLB4EJHZKBVF · pith_short_8: 2ZAEXLB4

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/2ZAEXLB4EJHZKBVFETUYIYPQGY \
  | 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: d6404bac3c224f9506a524e98461f03600c472255c23b497f6422ed430966013

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "676fae094b2833750c70378312280846bc7db1a59f877614744199208c9fe02d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-12-06T14:59:48Z",
    "title_canon_sha256": "5d711f55e7ad5e86f0d9a614ab8eb6ff4417b8bdf2acc2109c27008a838591e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0512152",
    "kind": "arxiv",
    "version": 1
  }
}