Pith Number

pith:NDDT5UBU

pith:2002:NDDT5UBUAZQ2UYAA6AVLFQJ63D

not attested not anchored not stored refs pending

Isocurvature perturbations in the Ekpyrotic universe

A. Notari (Scuola Normale Superiore, A. Riotto (INFN, Padova), Pisa)

arxiv:hep-th/0205019 v2 · 2002-05-02 · hep-th · astro-ph · hep-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{NDDT5UBUAZQ2UYAA6AVLFQJ63D}

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.

Cited by

3 papers in Pith

Phase-resolved field-space distance criteria in ekpyrotic, bouncing and cyclic cosmologies

Receipt and verification

First computed	2026-07-04T16:34:44.845816Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68c73ed0340661aa6000f02ab2c13ed8d549801d4cf6cfcf3ea2ee47fbb2cda5

Aliases

arxiv: hep-th/0205019 · arxiv_version: hep-th/0205019v2 · doi: 10.48550/arxiv.hep-th/0205019 · pith_short_12: NDDT5UBUAZQ2 · pith_short_16: NDDT5UBUAZQ2UYAA · pith_short_8: NDDT5UBU

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/NDDT5UBUAZQ2UYAA6AVLFQJ63D \
  | 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: 68c73ed0340661aa6000f02ab2c13ed8d549801d4cf6cfcf3ea2ee47fbb2cda5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "405fe278ab9198751fc7ff04e43e1796dc8d25e0ed9f9315461ce5b1e98f72b0",
    "cross_cats_sorted": [
      "astro-ph",
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "hep-th",
    "submitted_at": "2002-05-02T14:44:12Z",
    "title_canon_sha256": "c59608c65ba7bae5336390ba19285fffbc3e417fb5f06787840ed9d6289d9fa4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "hep-th/0205019",
    "kind": "arxiv",
    "version": 2
  }
}