Pith Number

pith:NDFDZZXG

pith:2018:NDFDZZXGHGW3ZAQHMRFQX2AREV

not attested not anchored not stored refs pending

Primordial gravitational waves and perturbations during an inhomogeneous inflation

Chao Kang, Xian Gao

arxiv:1804.03652 v2 · 2018-04-10 · astro-ph.CO · 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{NDFDZZXGHGW3ZAQHMRFQX2AREV}

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	2026-05-18T00:06:11.639836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68ca3ce6e639adbc8207644b0be8112574ab31b21396d7e18664172df7fd7e32

Aliases

arxiv: 1804.03652 · arxiv_version: 1804.03652v2 · doi: 10.48550/arxiv.1804.03652 · pith_short_12: NDFDZZXGHGW3 · pith_short_16: NDFDZZXGHGW3ZAQH · pith_short_8: NDFDZZXG

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/NDFDZZXGHGW3ZAQHMRFQX2AREV \
  | 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: 68ca3ce6e639adbc8207644b0be8112574ab31b21396d7e18664172df7fd7e32

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf0dedce44e5afb5366ebef01fa44a2928c9a03a670c391e405cace438f8cfa1",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-04-10T17:56:59Z",
    "title_canon_sha256": "9b29b7b4a34d75e2afb93e36af884728befd4d1358f369d4fb9c11e2e19efe43"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.03652",
    "kind": "arxiv",
    "version": 2
  }
}