Pith Number

pith:WQW7TC7U

pith:2013:WQW7TC7UVUOG63X4DFJEV4A62Y

not attested not anchored not stored refs pending

iSpec: An integrated software framework for the analysis of stellar spectra

C. Soubiran, P. Jofr\'e, S. Blanco-Cuaresma, U. Heiter

arxiv:1312.4545 v1 · 2013-12-16 · astro-ph.SR · astro-ph.GA · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WQW7TC7UVUOG63X4DFJEV4A62Y}

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	2026-05-18T03:04:23.635129Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b42df98bf4ad1c6f6efc19524af01ed62e7343f122033a349fcc82cb17009e22

Aliases

arxiv: 1312.4545 · arxiv_version: 1312.4545v1 · doi: 10.48550/arxiv.1312.4545 · pith_short_12: WQW7TC7UVUOG · pith_short_16: WQW7TC7UVUOG63X4 · pith_short_8: WQW7TC7U

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/WQW7TC7UVUOG63X4DFJEV4A62Y \
  | 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: b42df98bf4ad1c6f6efc19524af01ed62e7343f122033a349fcc82cb17009e22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf22276202aa815b212580164de71c32052b0224958077e61d50a1bf717488ea",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-12-16T21:00:08Z",
    "title_canon_sha256": "07fa8d15f96083412d006dd8dabea8d45ea632f7fee9f5eeb0938dc8a02e9479"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1312.4545",
    "kind": "arxiv",
    "version": 1
  }
}