Pith Number

pith:5RNZEVQV

pith:2009:5RNZEVQVWPFEO4S5VJJTISCITE

not attested not anchored not stored refs pending

Does the Universe Accelerate Equally in all Directions?

Cambridge), D. Lynden-Bell (IoA, R. Cooke

arxiv:0909.3861 v1 · 2009-09-22 · 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{5RNZEVQVWPFEO4S5VJJTISCITE}

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	2026-05-18T02:11:45.592001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ec5b925615b3ca47725daa533448489924fe7a5df6167b1ab2d9f52c7a36cd07

Aliases

arxiv: 0909.3861 · arxiv_version: 0909.3861v1 · doi: 10.48550/arxiv.0909.3861 · pith_short_12: 5RNZEVQVWPFE · pith_short_16: 5RNZEVQVWPFEO4S5 · pith_short_8: 5RNZEVQV

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/5RNZEVQVWPFEO4S5VJJTISCITE \
  | 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: ec5b925615b3ca47725daa533448489924fe7a5df6167b1ab2d9f52c7a36cd07

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0912462f40cfc9458e35a73417f70462e9769929157df8401015fe92b1c3f3b5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-09-22T08:50:41Z",
    "title_canon_sha256": "2bb3a3f3d4091a3493c2afe58804113bd43fc754ace1dc3b4ed7c4b95c8a9bfb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3861",
    "kind": "arxiv",
    "version": 1
  }
}