Pith Number

pith:ZJK4ER7D

pith:2018:ZJK4ER7DCFBG6WREG43E7O54GQ

not attested not anchored not stored refs pending

Chemical Abundances in the Ultra-Faint Dwarf Galaxies Grus I and Triangulum II: Neutron-Capture Elements as a Defining Feature of the Faintest Dwarfs

Alexander P. Ji, Anna Frebel, Joshua D. Simon, Kim A. Venn, Terese T. Hansen

arxiv:1809.02182 v2 · 2018-09-06 · astro-ph.GA · 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{ZJK4ER7DCFBG6WREG43E7O54GQ}

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	2026-05-17T23:56:17.972160Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ca55c247e311426f5a2437364fbbbc342bdd4c894bb990c1461f16fd6ab77191

Aliases

arxiv: 1809.02182 · arxiv_version: 1809.02182v2 · doi: 10.48550/arxiv.1809.02182 · pith_short_12: ZJK4ER7DCFBG · pith_short_16: ZJK4ER7DCFBG6WRE · pith_short_8: ZJK4ER7D

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/ZJK4ER7DCFBG6WREG43E7O54GQ \
  | 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: ca55c247e311426f5a2437364fbbbc342bdd4c894bb990c1461f16fd6ab77191

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a15c0e94efe9a5a4f8e7b00b5e66c7b8b01beb94cf8985ca9c896b81a2d9386",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-09-06T19:26:38Z",
    "title_canon_sha256": "d99a03a62853b96e29a2d0f397d8cef577ec8c38e744d15c0e5f24fb577d672b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02182",
    "kind": "arxiv",
    "version": 2
  }
}