Pith Number

pith:5JNT3K42

pith:2018:5JNT3K42JJMN732SQKB2P6XYMI

not attested not anchored not stored refs pending

A New Test of Copper and Zinc Abundances in Late-Type Stars Using Ultraviolet Cu II and Zn II Lines

Ian U. Roederer (U. Michigan), Paul S. Barklem (Uppsala U.)

arxiv:1803.09763 v1 · 2018-03-26 · 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{5JNT3K42JJMN732SQKB2P6XYMI}

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	2026-05-18T00:17:38.103742Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea5b3dab9a4a58dfef528283a7faf86205867ed64e2cc90b02d3a167c74f6b49

Aliases

arxiv: 1803.09763 · arxiv_version: 1803.09763v1 · doi: 10.48550/arxiv.1803.09763 · pith_short_12: 5JNT3K42JJMN · pith_short_16: 5JNT3K42JJMN732S · pith_short_8: 5JNT3K42

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/5JNT3K42JJMN732SQKB2P6XYMI \
  | 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: ea5b3dab9a4a58dfef528283a7faf86205867ed64e2cc90b02d3a167c74f6b49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e74da3fe012b2754381b61b73aa2de94e5422fcbcc0372938d372da2bb2487e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-26T18:00:17Z",
    "title_canon_sha256": "8585337ece06a9f28b2e821bbd68e7216c9aeb764ecd279751962e2bca1c5d28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.09763",
    "kind": "arxiv",
    "version": 1
  }
}