Pith Number

pith:FCQPD2VD

pith:2009:FCQPD2VD6Y6BIBFBRI264LGH57

not attested not anchored not stored refs pending

ULySS: A Full Spectrum Fitting Package

Antoine Bouchard, Mina Koleva, Philippe Prugniel, Yue Wu

arxiv:0903.2979 v1 · 2009-03-17 · astro-ph.IM · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FCQPD2VD6Y6BIBFBRI264LGH57}

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	2026-05-18T02:14:27.773813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28a0f1eaa3f63c1404a18a35ee2cc7efee55e9d6e260ffe43c50024b55666ddd

Aliases

arxiv: 0903.2979 · arxiv_version: 0903.2979v1 · doi: 10.48550/arxiv.0903.2979 · pith_short_12: FCQPD2VD6Y6B · pith_short_16: FCQPD2VD6Y6BIBFB · pith_short_8: FCQPD2VD

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/FCQPD2VD6Y6BIBFBRI264LGH57 \
  | 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: 28a0f1eaa3f63c1404a18a35ee2cc7efee55e9d6e260ffe43c50024b55666ddd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c982a83a3d98c381d2f5df40bd7cb91e8e3f45fca7949ae8a478b114d3138f0",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-03-17T14:58:59Z",
    "title_canon_sha256": "c56352d0f4c0c947eefaae2ae963aadb49c1e858dd8c6b40e463b2c977c0d4cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.2979",
    "kind": "arxiv",
    "version": 1
  }
}