Pith Number

pith:US4EOMB6

pith:2019:US4EOMB6OOFXPLLIZ22CTJES2R

not attested not anchored not stored refs pending

Extremely metal-poor galaxies with HST/COS: laboratories for models of low-metallicity massive stars and high-redshift galaxies

Alba Vidal Garc\'ia, Daniel P. Stark, Jacopo Chevallard, Peter Senchyna, St\'ephane Charlot, Tucker Jones

arxiv:1904.01615 v2 · 2019-04-02 · 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{US4EOMB6OOFXPLLIZ22CTJES2R}

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	2026-07-04T23:59:48.813524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4b847303e738b77ad68ceb429a492d46eaeacd869f6abc18e74593484858e03

Aliases

arxiv: 1904.01615 · arxiv_version: 1904.01615v2 · doi: 10.48550/arxiv.1904.01615 · pith_short_12: US4EOMB6OOFX · pith_short_16: US4EOMB6OOFXPLLI · pith_short_8: US4EOMB6

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/US4EOMB6OOFXPLLIZ22CTJES2R \
  | 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: a4b847303e738b77ad68ceb429a492d46eaeacd869f6abc18e74593484858e03

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d97986bb96deca7f8b7e63541bbaf2338904a957fa314fe3e3f2b891854ca665",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-02T18:39:18Z",
    "title_canon_sha256": "608738a82b60a6eb23b1cf2f8d248a8639144885341b3d6ba52ff42c52c6bd3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.01615",
    "kind": "arxiv",
    "version": 2
  }
}