Pith Number

pith:ZAPYV3H3

pith:2013:ZAPYV3H3COCSHLSTB5YDQNMEHV

not attested not anchored not stored refs pending

High Resolution Spectroscopy of M subdwarfs

A. S. Rajpurohit, C. Reyle, F. Allard, M. Schultheis

arxiv:1309.4604 v1 · 2013-09-18 · 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{ZAPYV3H3COCSHLSTB5YDQNMEHV}

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	2026-05-18T03:12:58.870422Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c81f8aecfb138523ae530f703835843d40775b789e080933fab5929f08bed871

Aliases

arxiv: 1309.4604 · arxiv_version: 1309.4604v1 · doi: 10.48550/arxiv.1309.4604 · pith_short_12: ZAPYV3H3COCS · pith_short_16: ZAPYV3H3COCSHLST · pith_short_8: ZAPYV3H3

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/ZAPYV3H3COCSHLSTB5YDQNMEHV \
  | 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: c81f8aecfb138523ae530f703835843d40775b789e080933fab5929f08bed871

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0097e4bd91371d0655dba94067d75206882b6a7d0800b4b462c39acc9835ec23",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-09-18T10:16:09Z",
    "title_canon_sha256": "9fe0c157efcb0079a2e3ad1fceb86368bee525030363cb204e18db4d086fa5ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.4604",
    "kind": "arxiv",
    "version": 1
  }
}