Pith Number

pith:EP6ETRMW

pith:2014:EP6ETRMWU4RTHIZYVK6C5E2YLW

not attested not anchored not stored refs pending

Cosmological perturbations in the models of dark energy and modified gravity

Jiro Matsumoto

arxiv:1401.3077 v1 · 2014-01-14 · astro-ph.CO · gr-qc · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EP6ETRMWU4RTHIZYVK6C5E2YLW}

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	2026-05-18T00:35:09.690489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

23fc49c596a72333a338aabc2e93585d82203980782be63347d578940971c078

Aliases

arxiv: 1401.3077 · arxiv_version: 1401.3077v1 · doi: 10.48550/arxiv.1401.3077 · pith_short_12: EP6ETRMWU4RT · pith_short_16: EP6ETRMWU4RTHIZY · pith_short_8: EP6ETRMW

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/EP6ETRMWU4RTHIZYVK6C5E2YLW \
  | 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: 23fc49c596a72333a338aabc2e93585d82203980782be63347d578940971c078

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "acdf24161e81bfc31917aefe5c96b457ed723e14ac1b5f408d4a7d929e9312b7",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2014-01-14T06:15:01Z",
    "title_canon_sha256": "9ba34c25857cb7b75cfdb768604de7b7f206384777fd2b1e6f8e487f66ab0f5c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.3077",
    "kind": "arxiv",
    "version": 1
  }
}