Pith Number

pith:2T7NGKHJ

pith:2002:2T7NGKHJ47URZWW2UT2UUS4J2P

not attested not anchored not stored refs pending

Probing quintessence: reconstruction and parameter estimation from supernovae

2), (2) University of California-Berkeley), Brian F. Gerke (1, G. Efstathiou (1) ((1) Institute of Astronomy, University of Cambridge

arxiv:astro-ph/0201336 v2 · 2002-01-21 · 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{2T7NGKHJ47URZWW2UT2UUS4J2P}

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	2026-07-04T16:29:17.353041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4fed328e9e7e91cdadaa4f54a4b89d3eba751662897bc97e4f1fae537d2c305

Aliases

arxiv: astro-ph/0201336 · arxiv_version: astro-ph/0201336v2 · doi: 10.48550/arxiv.astro-ph/0201336 · pith_short_12: 2T7NGKHJ47UR · pith_short_16: 2T7NGKHJ47URZWW2 · pith_short_8: 2T7NGKHJ

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/2T7NGKHJ47URZWW2UT2UUS4J2P \
  | 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: d4fed328e9e7e91cdadaa4f54a4b89d3eba751662897bc97e4f1fae537d2c305

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8fbe88efb418f0ff47fba63f72beced94c6fb3c4a2b072a4653f14352bc9be69",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-01-21T01:52:06Z",
    "title_canon_sha256": "ee4e0e986e6c206617b8ea91a5086f625d02c109880a7b9e1e505d69948e1836"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0201336",
    "kind": "arxiv",
    "version": 2
  }
}