Pith Number

pith:7L5SDHXK

pith:2003:7L5SDHXKG3QVRATWPBQ3S6534T

not attested not anchored not stored refs pending

A Regularized Free Form Estimator for Dark Energy

Tarun Deep Saini

arxiv:astro-ph/0302291 v2 · 2003-02-14 · 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{7L5SDHXKG3QVRATWPBQ3S6534T}

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	2026-05-18T01:07:33.827669Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fafb219eea36e15882767861b97bbbe4d291cb1fce3096299044a6c5bd872923

Aliases

arxiv: astro-ph/0302291 · arxiv_version: astro-ph/0302291v2 · doi: 10.48550/arxiv.astro-ph/0302291 · pith_short_12: 7L5SDHXKG3QV · pith_short_16: 7L5SDHXKG3QVRATW · pith_short_8: 7L5SDHXK

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/7L5SDHXKG3QVRATWPBQ3S6534T \
  | 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: fafb219eea36e15882767861b97bbbe4d291cb1fce3096299044a6c5bd872923

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "282b225509372f639d1074f02ba2fec1703de755869f537667a32e3865e762c9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-02-14T17:41:33Z",
    "title_canon_sha256": "249109df990e3a42b84fbc0f3f9555f0e19f194c3bae7c8b2c16acf613bbab50"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0302291",
    "kind": "arxiv",
    "version": 2
  }
}