Pith Number

pith:CDZ47VXA

pith:2008:CDZ47VXA4C6G72IENJW4XU5BQ4

not attested not anchored not stored refs pending

The Dark Universe Riddle

A. J. S. Capistrano, P.I. Odon

arxiv:0812.1286 v2 · 2008-12-06 · gr-qc · 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{CDZ47VXA4C6G72IENJW4XU5BQ4}

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	2026-05-18T01:14:09.773458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10f3cfd6e0e0bc6fe9046a6dcbd3a1873e4ea5e19e5ceacc673d83d8ccc0f2a5

Aliases

arxiv: 0812.1286 · arxiv_version: 0812.1286v2 · doi: 10.48550/arxiv.0812.1286 · pith_short_12: CDZ47VXA4C6G · pith_short_16: CDZ47VXA4C6G72IE · pith_short_8: CDZ47VXA

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/CDZ47VXA4C6G72IENJW4XU5BQ4 \
  | 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: 10f3cfd6e0e0bc6fe9046a6dcbd3a1873e4ea5e19e5ceacc673d83d8ccc0f2a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dec85f349eb273538bb6ea5b31e6a98a61ba9d38c84338d18412302b2029d4b",
    "cross_cats_sorted": [
      "astro-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2008-12-06T13:24:53Z",
    "title_canon_sha256": "db03ef456891c356cb709191c3463946e58f5a8801efdb0d3508700d76268dd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0812.1286",
    "kind": "arxiv",
    "version": 2
  }
}