Pith Number

pith:3PHPEEIT

pith:2000:3PHPEEITSNODH5HRRNH6RMOMBC

not attested not anchored not stored refs pending

Groups and clusters detection on DPOSS catalogs

2), (2) A.R.I. Liverpool, (3) Caltech, (4) Osservatorio di Monte Porzio, E. De Filippis (1, E. Puddu (1), G. Longo (1), Italy, Italy), R. Gal (3), R. Scaramella (4) ((1) Osservatorio di Capodimonte, S. Andreon (1), S. Djorgovski (3), UK, USA, V. Strazzullo (1)

arxiv:astro-ph/0009163 v1 · 2000-09-11 · 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{3PHPEEITSNODH5HRRNH6RMOMBC}

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	2026-07-04T14:10:42.887962Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dbcef21113935c33f4f18b4fe8b1cc08b647e090ee4100d55058b754e18892ef

Aliases

arxiv: astro-ph/0009163 · arxiv_version: astro-ph/0009163v1 · doi: 10.48550/arxiv.astro-ph/0009163 · pith_short_12: 3PHPEEITSNOD · pith_short_16: 3PHPEEITSNODH5HR · pith_short_8: 3PHPEEIT

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/3PHPEEITSNODH5HRRNH6RMOMBC \
  | 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: dbcef21113935c33f4f18b4fe8b1cc08b647e090ee4100d55058b754e18892ef

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "66d3e551c945da44923440da89c810899bb12f60c03a29f7fafcc58f6467a021",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2000-09-11T15:23:52Z",
    "title_canon_sha256": "df8c659d3243d77b34e728c0b42b618fdafa81d1910df03b0c3d4e78d0610814"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0009163",
    "kind": "arxiv",
    "version": 1
  }
}