Pith Number

pith:SFW63FIZ

pith:2018:SFW63FIZOA7FGHQM3QUREUCBTR

not attested not anchored not stored refs pending

Fingerprint of the first stars: multi-enriched extremely metal-poor stars in the TOPoS survey

Miho N. Ishigaki, Naoki Yoshida, Ralf S. Klessen, Tilman Hartwig

arxiv:1810.04713 v1 · 2018-10-10 · astro-ph.GA · astro-ph.CO · 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{SFW63FIZOA7FGHQM3QUREUCBTR}

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	2026-05-18T00:02:30.254580Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

916ded9519703e531e0cdc291250419c799acb61aaedf0acd9867b2fbb9d6f81

Aliases

arxiv: 1810.04713 · arxiv_version: 1810.04713v1 · doi: 10.48550/arxiv.1810.04713 · pith_short_12: SFW63FIZOA7F · pith_short_16: SFW63FIZOA7FGHQM · pith_short_8: SFW63FIZ

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/SFW63FIZOA7FGHQM3QUREUCBTR \
  | 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: 916ded9519703e531e0cdc291250419c799acb61aaedf0acd9867b2fbb9d6f81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93dfaf4645697cc0ff6310da92f543ea69833beb135e12705d2ca12587aa1d1a",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-10T19:10:30Z",
    "title_canon_sha256": "26eb2944af0ef96d26fb489706c89e88681d21832d0ae5447d50cdea41db4e52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.04713",
    "kind": "arxiv",
    "version": 1
  }
}