Pith Number

pith:57VS4LL2

pith:2013:57VS4LL22NT75AMXTMYAPCCD32

not attested not anchored not stored refs pending

Direct Evaluation of the Helium Abundances in Omega Centauri

A. K. Dupree, E. H. Avrett (Harvard-Smithsonian Center for Astrophysics)

arxiv:1307.5860 v1 · 2013-07-22 · 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{57VS4LL22NT75AMXTMYAPCCD32}

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	2026-05-18T01:48:41.480041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efeb2e2d7ad367fe81979b30078843de9cc5f57b8948ea998c6e502db0060ff3

Aliases

arxiv: 1307.5860 · arxiv_version: 1307.5860v1 · doi: 10.48550/arxiv.1307.5860 · pith_short_12: 57VS4LL22NT7 · pith_short_16: 57VS4LL22NT75AMX · pith_short_8: 57VS4LL2

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/57VS4LL22NT75AMXTMYAPCCD32 \
  | 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: efeb2e2d7ad367fe81979b30078843de9cc5f57b8948ea998c6e502db0060ff3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed93eb8f1f19538ef4ca330745bb43f8c829faf87ba03be418abfe325e996b36",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/publicdomain/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-22T20:01:06Z",
    "title_canon_sha256": "ad64d6513a33dbd5e88bf7472de9d75b894c9834ab6e45dce5086b2ceb1b0a3b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.5860",
    "kind": "arxiv",
    "version": 1
  }
}