Pith Number

pith:OK5Z3MLZ

pith:2019:OK5Z3MLZGY6A55YXRVY5VHV4VF

not attested not anchored not stored refs pending

Walking along Cosmic History: Metal-poor Massive Stars

A. Herrero, A.W. Fullerton, A. Wofford, C.J. Evans, D.J. Lennon, F. Najarro, J.C. Bouret, M. Cervi\~no, M. Garcia, N. Castro

arxiv:1903.05235 v1 · 2019-03-12 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OK5Z3MLZGY6A55YXRVY5VHV4VF}

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	2026-05-17T23:51:25.005188Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

72bb9db179363c0ef7178d71da9ebca94e20dd3ff43f18c1d9c08048b9c090ae

Aliases

arxiv: 1903.05235 · arxiv_version: 1903.05235v1 · doi: 10.48550/arxiv.1903.05235 · pith_short_12: OK5Z3MLZGY6A · pith_short_16: OK5Z3MLZGY6A55YX · pith_short_8: OK5Z3MLZ

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/OK5Z3MLZGY6A55YXRVY5VHV4VF \
  | 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: 72bb9db179363c0ef7178d71da9ebca94e20dd3ff43f18c1d9c08048b9c090ae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d7a194f6d93ce897be319a192adc25b472d4bca997b36efddaf40d67d02486d",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-03-12T22:08:57Z",
    "title_canon_sha256": "062ce53ca142f861649631bfdb6a6825aaf251b5ce6d4bce48eb666531cfa9c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.05235",
    "kind": "arxiv",
    "version": 1
  }
}