Pith Number

pith:QWHIL4HI

pith:2015:QWHIL4HIIRQBHTKIMJ2746MYJJ

not attested not anchored not stored refs pending

The Ca II triplet in red giant spectra: [Fe/H] determinations and the role of [Ca/Fe]

G. S. Da Costa

arxiv:1510.00766 v1 · 2015-10-03 · 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{QWHIL4HIIRQBHTKIMJ2746MYJJ}

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	2026-05-18T01:27:22.302975Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

858e85f0e8446013cd486275fe79984a598a40c15a305d1ef0b1c54844727962

Aliases

arxiv: 1510.00766 · arxiv_version: 1510.00766v1 · doi: 10.48550/arxiv.1510.00766 · pith_short_12: QWHIL4HIIRQB · pith_short_16: QWHIL4HIIRQBHTKI · pith_short_8: QWHIL4HI

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/QWHIL4HIIRQBHTKIMJ2746MYJJ \
  | 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: 858e85f0e8446013cd486275fe79984a598a40c15a305d1ef0b1c54844727962

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c7a1e32c21a182705d34de70a966bca26a77dfac9ab6de192c18ce07e85b69d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-10-03T01:39:21Z",
    "title_canon_sha256": "41558f722b08ceb235567524026e24bd8e417428a167fbf13fc8a47c6dcfb7a2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.00766",
    "kind": "arxiv",
    "version": 1
  }
}