Pith Number

pith:VHU7HTYI

pith:2022:VHU7HTYII5KYSVLQLC6QYEWO2S

not attested not anchored not stored refs pending

Investigating dark energy by electromagnetic frequency shifts II: the Pantheon+ sample

Alessandro D. A. M. Spallicci, Giuseppe Sarracino, Salvatore Capozziello

arxiv:2211.11438 v4 · 2022-11-21 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VHU7HTYII5KYSVLQLC6QYEWO2S}

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	2026-07-05T05:32:23.986194Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a9e9f3cf08475589557058bd0c12ced4b79cb077b50752ad8965b945f03fbc08

Aliases

arxiv: 2211.11438 · arxiv_version: 2211.11438v4 · doi: 10.48550/arxiv.2211.11438 · pith_short_12: VHU7HTYII5KY · pith_short_16: VHU7HTYII5KYSVLQ · pith_short_8: VHU7HTYI

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/VHU7HTYII5KYSVLQLC6QYEWO2S \
  | 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: a9e9f3cf08475589557058bd0c12ced4b79cb077b50752ad8965b945f03fbc08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3261702d0e7912fc422134b079771facbb08b82f89e8e96dc27bf7471e141b58",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2022-11-21T13:25:43Z",
    "title_canon_sha256": "deb521c2f41d0e77d90a89ca5fdf0751e754074f02f98489f35e8ff5e16ad04a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2211.11438",
    "kind": "arxiv",
    "version": 4
  }
}