pith. sign in
Pith Number

pith:252NKDAV

pith:2012:252NKDAV3E542SR7NT5Z53U4WZ
not attested not anchored not stored refs pending

Constraints on Dark Energy state equation with varying pivoting redshift

Dario Scovacricchi, Giuseppe La Vacca, Marino Mezzetti, Silvio A. Bonometto

arxiv:1211.7315 v3 · 2012-11-30 · astro-ph.CO

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{252NKDAV3E542SR7NT5Z53U4WZ}

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 2026-05-18T01:52:52.798203Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

d774d50c15d93bcd4a3f6cfb9eee9cb6639637f60fe4429d108c224821b6acb3

Aliases

arxiv: 1211.7315 · arxiv_version: 1211.7315v3 · doi: 10.48550/arxiv.1211.7315 · pith_short_12: 252NKDAV3E54 · pith_short_16: 252NKDAV3E542SR7 · pith_short_8: 252NKDAV
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/252NKDAV3E542SR7NT5Z53U4WZ \
  | 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: d774d50c15d93bcd4a3f6cfb9eee9cb6639637f60fe4429d108c224821b6acb3
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "b7300751f1411a4f8aa5183bad251aac60e3bffc1577931ff67f99d60570d4f4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-11-30T17:11:14Z",
    "title_canon_sha256": "72a92e67c7e275a685b3b600b8f58dd03742c65f96850c77b683ac165f555575"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1211.7315",
    "kind": "arxiv",
    "version": 3
  }
}