Pith Number

pith:YR2HSF3A

pith:2002:YR2HSF3AMDUBMXWKHLU4WBBZQQ

not attested not anchored not stored refs pending

Classification and redshift estimation by principal component analysis

Canada), Chile), France), Paris, Paul Hickson (UBC, Remi A. Cabanac (ESO, Valerie de Lapparent (IAP, Vancouver

arxiv:astro-ph/0206062 v2 · 2002-06-04 · 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{YR2HSF3AMDUBMXWKHLU4WBBZQQ}

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	2026-07-04T16:30:08.453983Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c47479176060e8165eca3ae9cb0439842e7172293ba6ddd41e3af3fb25c8b221

Aliases

arxiv: astro-ph/0206062 · arxiv_version: astro-ph/0206062v2 · doi: 10.48550/arxiv.astro-ph/0206062 · pith_short_12: YR2HSF3AMDUB · pith_short_16: YR2HSF3AMDUBMXWK · pith_short_8: YR2HSF3A

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/YR2HSF3AMDUBMXWKHLU4WBBZQQ \
  | 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: c47479176060e8165eca3ae9cb0439842e7172293ba6ddd41e3af3fb25c8b221

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf33ae6945366a0a9abb9992c38fad1f9ab6b729e037a4eaf7bc1ff229944284",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-06-04T18:37:29Z",
    "title_canon_sha256": "5041153c23a09addee0a84391d97bf5ad27acc7da7fd857add8ab16594921e6c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0206062",
    "kind": "arxiv",
    "version": 2
  }
}