Pith Number

pith:SRQDFXCL

pith:2009:SRQDFXCLBY7EDYBZMI4M6FN23K

not attested not anchored not stored refs pending

Galaxy distribution and evolution around a sample of 2dF groups

A.C. Schilling, A.L.B. Ribeiro, M. Trevisan, P.A.A. Lopes

arxiv:0908.0517 v2 · 2009-08-04 · 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{SRQDFXCLBY7EDYBZMI4M6FN23K}

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	2026-05-18T02:12:44.728146Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

946032dc4b0e3e41e0396238cf15bada80471734ebb94cb25b282c0bc08adf02

Aliases

arxiv: 0908.0517 · arxiv_version: 0908.0517v2 · doi: 10.48550/arxiv.0908.0517 · pith_short_12: SRQDFXCLBY7E · pith_short_16: SRQDFXCLBY7EDYBZ · pith_short_8: SRQDFXCL

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/SRQDFXCLBY7EDYBZMI4M6FN23K \
  | 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: 946032dc4b0e3e41e0396238cf15bada80471734ebb94cb25b282c0bc08adf02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8f35c31c2f14ad0947fc2d3533cdee1af8b204894911c91a5c402a3c5d1a9d16",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-08-04T19:17:35Z",
    "title_canon_sha256": "786024426d6bd7f65fccc4cd3234ad7c361fa5e56c7b045f43465eb78b523a47"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0908.0517",
    "kind": "arxiv",
    "version": 2
  }
}