Pith Number

pith:4V4KSNAN

pith:1999:4V4KSNANCTS2NVCCAW4VMXCCP2

not attested not anchored not stored refs pending

Metal Enrichment in the Early Galactic Halo

C. Ikuta, N. Arimoto (Institute of Astronomy, U. of Tokyo)

arxiv:astro-ph/9905260 v2 · 1999-05-20 · 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{4V4KSNANCTS2NVCCAW4VMXCCP2}

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	2026-05-18T01:40:13.125289Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e578a9340d14e5a6d44205b9565c427ea9741293bc52e5a512f45d5559d07db7

Aliases

arxiv: astro-ph/9905260 · arxiv_version: astro-ph/9905260v2 · doi: 10.48550/arxiv.astro-ph/9905260 · pith_short_12: 4V4KSNANCTS2 · pith_short_16: 4V4KSNANCTS2NVCC · pith_short_8: 4V4KSNAN

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/4V4KSNANCTS2NVCCAW4VMXCCP2 \
  | 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: e578a9340d14e5a6d44205b9565c427ea9741293bc52e5a512f45d5559d07db7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9347f359e8bd58aef759959be6baf432260b9c935252ca2a421f622de1881dd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-05-20T06:44:18Z",
    "title_canon_sha256": "0768ca8f11f31c26536c9eedb1c2b76a172001b58de6f20ae60cd8112839d810"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9905260",
    "kind": "arxiv",
    "version": 2
  }
}