Pith Number

pith:45SZECUE

pith:2017:45SZECUE7KCSWFBXF66GWLAAIA

not attested not anchored not stored refs pending

Smoothing expansion rate data to reconstruct cosmological matter perturbations

J. C. Carvalho, J. E. Gonzalez, J. S. Alcaniz

arxiv:1702.02923 v1 · 2017-02-09 · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{45SZECUE7KCSWFBXF66GWLAAIA}

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	2026-05-18T00:38:03.593880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e765920a84fa852b14372fbc6b2c00403a3e9979cac55f04d143e5881c678b1a

Aliases

arxiv: 1702.02923 · arxiv_version: 1702.02923v1 · doi: 10.48550/arxiv.1702.02923 · pith_short_12: 45SZECUE7KCS · pith_short_16: 45SZECUE7KCSWFBX · pith_short_8: 45SZECUE

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/45SZECUE7KCSWFBXF66GWLAAIA \
  | 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: e765920a84fa852b14372fbc6b2c00403a3e9979cac55f04d143e5881c678b1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bef92fdf694685646aaf2d434e76899b7c1b24ac7c8dcc40c06594c45550725c",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-02-09T18:15:26Z",
    "title_canon_sha256": "a349907e0c88bed6dca98f7540ff228102d793a1761d698c0409b276636b8a9a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.02923",
    "kind": "arxiv",
    "version": 1
  }
}