Pith Number

pith:VYLOC7QU

pith:2000:VYLOC7QUDTR3DLERYJXY6ZXFA6

not attested not anchored not stored refs pending

A wavelet analysis of QSO spectra

Garching), Saleem Zaroubi (MPA, Tom Theuns

arxiv:astro-ph/0002172 v2 · 2000-02-08 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VYLOC7QUDTR3DLERYJXY6ZXFA6}

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	2026-07-04T16:16:02.427735Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ae16e17e141ce3b1ac91c26f8f66e507b22dc4b8bfa860a7a2a9d192797bd66f

Aliases

arxiv: astro-ph/0002172 · arxiv_version: astro-ph/0002172v2 · doi: 10.48550/arxiv.astro-ph/0002172 · pith_short_12: VYLOC7QUDTR3 · pith_short_16: VYLOC7QUDTR3DLER · pith_short_8: VYLOC7QU

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/VYLOC7QUDTR3DLERYJXY6ZXFA6 \
  | 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: ae16e17e141ce3b1ac91c26f8f66e507b22dc4b8bfa860a7a2a9d192797bd66f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a58f0ad563c77214f6978cf198f13b30b2952845bd834da0d7e14871864b77ef",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-02-08T12:15:34Z",
    "title_canon_sha256": "485ec80868b4f931416da3e2679accf7e03cf0301ea598045ef8ace497f24360"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0002172",
    "kind": "arxiv",
    "version": 2
  }
}