Pith Number

pith:WTCOP5RW

pith:2009:WTCOP5RWXIJG4MF2FP6P5TKLCK

not attested not anchored not stored refs pending

Competitive feedback in galaxy formation

Andrew King (Leicester), Mark I. Wilkinson, Sergei Nayakshin

arxiv:0907.1002 v1 · 2009-07-06 · astro-ph.CO · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WTCOP5RWXIJG4MF2FP6P5TKLCK}

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	2026-05-18T02:13:05.034408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b4c4e7f636ba126e30ba2bfcfecd4b128a9bdfe5c8b484bdf53b7716384ee9a6

Aliases

arxiv: 0907.1002 · arxiv_version: 0907.1002v1 · doi: 10.48550/arxiv.0907.1002 · pith_short_12: WTCOP5RWXIJG · pith_short_16: WTCOP5RWXIJG4MF2 · pith_short_8: WTCOP5RW

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/WTCOP5RWXIJG4MF2FP6P5TKLCK \
  | 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: b4c4e7f636ba126e30ba2bfcfecd4b128a9bdfe5c8b484bdf53b7716384ee9a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "32304eeeedd48d40315c94811652747e0e9c82f566a4ca54f9d8ca022b2f34f8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-07-06T14:21:43Z",
    "title_canon_sha256": "237152a523bd9ec0fd77004fb6507f93ad6c0b90f9392897a607d39358f6c51f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.1002",
    "kind": "arxiv",
    "version": 1
  }
}