Pith Number

pith:E33XFOGG

pith:2009:E33XFOGGGTFMJVIRLQGW76SFCJ

not attested not anchored not stored refs pending

Dark energy perturbations and a possible solution to the coincidence problem

Ana Pelinson, Javier Grande, Joan Sola

arxiv:0904.3293 v2 · 2009-04-21 · astro-ph.CO · gr-qc · hep-ph · 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{E33XFOGGGTFMJVIRLQGW76SFCJ}

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	2026-05-18T00:59:28.634998Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26f772b8c634cac4d5115c0d6ffa45125b242223fcb4fdcc91f2f2ccf196bb0b

Aliases

arxiv: 0904.3293 · arxiv_version: 0904.3293v2 · doi: 10.48550/arxiv.0904.3293 · pith_short_12: E33XFOGGGTFM · pith_short_16: E33XFOGGGTFMJVIR · pith_short_8: E33XFOGG

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/E33XFOGGGTFMJVIRLQGW76SFCJ \
  | 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: 26f772b8c634cac4d5115c0d6ffa45125b242223fcb4fdcc91f2f2ccf196bb0b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab36b2b784c9e30dc5bc9898a2608bd949cda56eeaa59946810de7b31e4493f8",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-04-21T16:57:38Z",
    "title_canon_sha256": "da72fcafc51735b192da652f0f2cae0706786c3011ba31998e07e6cbd6e760d1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.3293",
    "kind": "arxiv",
    "version": 2
  }
}