Pith Number

pith:HHEBPHDB

pith:2008:HHEBPHDBKWLXLEQCYQHRVATK5I

not attested not anchored not stored refs pending

Dark energy perturbations and cosmic coincidence

Ana Pelinson, Javier Grande, Joan Sola

arxiv:0809.3462 v5 · 2008-09-20 · 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{HHEBPHDBKWLXLEQCYQHRVATK5I}

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	2026-05-18T04:18:13.331252Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39c8179c615597759202c40f1a826aea365db3db39190eff8ff76589b9d153e4

Aliases

arxiv: 0809.3462 · arxiv_version: 0809.3462v5 · doi: 10.48550/arxiv.0809.3462 · pith_short_12: HHEBPHDBKWLX · pith_short_16: HHEBPHDBKWLXLEQC · pith_short_8: HHEBPHDB

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/HHEBPHDBKWLXLEQCYQHRVATK5I \
  | 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: 39c8179c615597759202c40f1a826aea365db3db39190eff8ff76589b9d153e4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b98fd01a799126b33b208700b22161f0f4fa77a754ea5c80468cdb13593577a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-20T08:05:23Z",
    "title_canon_sha256": "c636f256700c18f2a1a178a3845e5ae67ed61bf0f72dcc1a980b2b51bd6b5b68"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3462",
    "kind": "arxiv",
    "version": 5
  }
}