Pith Number

pith:NN5J2ARB

pith:2009:NN5J2ARB5CG34FJU3RVBBUDAQL

not attested not anchored not stored refs pending

Do supernovae favor tachyonic Big Brake instead de Sitter?

A. Yu. Kamenshchik, L. \'A. Gergely, U. Moschella, V. Gorini, Z. Keresztes

arxiv:0910.3887 v2 · 2009-10-20 · gr-qc · astro-ph.CO · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NN5J2ARB5CG34FJU3RVBBUDAQL}

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	2026-05-18T04:42:36.169392Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b7a9d0221e88dbe1534dc6a10d06082cd25629013d545c28d5070257669ec6e

Aliases

arxiv: 0910.3887 · arxiv_version: 0910.3887v2 · doi: 10.48550/arxiv.0910.3887 · pith_short_12: NN5J2ARB5CG3 · pith_short_16: NN5J2ARB5CG34FJU · pith_short_8: NN5J2ARB

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/NN5J2ARB5CG34FJU3RVBBUDAQL \
  | 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: 6b7a9d0221e88dbe1534dc6a10d06082cd25629013d545c28d5070257669ec6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f6de5c32d5993a5a627fecedc1e167217eb25eae89aafc589ab38f73dc032efd",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2009-10-20T15:59:44Z",
    "title_canon_sha256": "0f9af7f2b436f24fc9c62fdc037badbf990144a6d7f73037c08a7238bcd58e6a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0910.3887",
    "kind": "arxiv",
    "version": 2
  }
}