Pith Number

pith:NQRDK2VJ

pith:2009:NQRDK2VJENUFS3ZE2CSE3T4T4A

not attested not anchored not stored refs pending

The Origin of the Hubble Sequence in Lambda-CDM Cosmology

(2) Embry-Riddle Aeronautical University), Andrew J. Benson (1), Nick Devereux (2) ((1) California Institute of Technology

arxiv:0911.4480 v2 · 2009-11-23 · 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{NQRDK2VJENUFS3ZE2CSE3T4T4A}

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	2026-05-18T02:10:37.337189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c22356aa92368596f24d0a44dcf93e02aa7cb7386ee4ca3b4fc0be462d32498

Aliases

arxiv: 0911.4480 · arxiv_version: 0911.4480v2 · doi: 10.48550/arxiv.0911.4480 · pith_short_12: NQRDK2VJENUF · pith_short_16: NQRDK2VJENUFS3ZE · pith_short_8: NQRDK2VJ

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/NQRDK2VJENUFS3ZE2CSE3T4T4A \
  | 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: 6c22356aa92368596f24d0a44dcf93e02aa7cb7386ee4ca3b4fc0be462d32498

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7155bcea73ab383aea393809ef17961a0f2f789682e2237dd6bd8c7fa813664",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-11-23T23:29:29Z",
    "title_canon_sha256": "ed4671cdc63fb57e29e2579cc5de38396e0006a9f2d8abfa18cd63ee4a4610c1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.4480",
    "kind": "arxiv",
    "version": 2
  }
}