Pith Number

pith:WXFQ2UGW

pith:2019:WXFQ2UGWZ2W7Y7ULZBGTQ72YAC

not attested not anchored not stored refs pending

Quantum-gravity effects for excited states of inflationary perturbations

Claus Kiefer, David Brizuela, Manuel Kraemer, Salvador Robles-P\'erez

arxiv:1903.01234 v2 · 2019-03-04 · gr-qc · 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{WXFQ2UGWZ2W7Y7ULZBGTQ72YAC}

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	2026-05-17T23:46:52.783144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b5cb0d50d6ceadfc7e8bc84d387f5800bbd0487068588b8f1f836f142403ee88

Aliases

arxiv: 1903.01234 · arxiv_version: 1903.01234v2 · doi: 10.48550/arxiv.1903.01234 · pith_short_12: WXFQ2UGWZ2W7 · pith_short_16: WXFQ2UGWZ2W7Y7UL · pith_short_8: WXFQ2UGW

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/WXFQ2UGWZ2W7Y7ULZBGTQ72YAC \
  | 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: b5cb0d50d6ceadfc7e8bc84d387f5800bbd0487068588b8f1f836f142403ee88

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6c8ef6897a50262efcae6407f8d681061844b54adb6ca7e9fe1ec469bd31b87c",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-03-04T13:42:07Z",
    "title_canon_sha256": "69ec4b3d342cbfd93218e30f22871f83dab8a64fe8bd1b35aee0a8bb5c4d84e1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.01234",
    "kind": "arxiv",
    "version": 2
  }
}