Pith Number

pith:NG47EQZY

pith:2023:NG47EQZYQ2SHD6E44OKGDFTU3T

not attested not anchored not stored refs pending

Damping of gravitational waves in f(R) gravity

Haiyuan Feng, Laiyuan Su, Rong-Jia Yang, Wei-Qiang Chen

arxiv:2302.06402 v4 · 2023-02-13 · 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{NG47EQZYQ2SHD6E44OKGDFTU3T}

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	2026-07-05T10:29:12.044843Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69b9f2433886a471f89ce394619674dcece5ae5774ff442e74e9d870e42d4ecb

Aliases

arxiv: 2302.06402 · arxiv_version: 2302.06402v4 · doi: 10.48550/arxiv.2302.06402 · pith_short_12: NG47EQZYQ2SH · pith_short_16: NG47EQZYQ2SHD6E4 · pith_short_8: NG47EQZY

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/NG47EQZYQ2SHD6E44OKGDFTU3T \
  | 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: 69b9f2433886a471f89ce394619674dcece5ae5774ff442e74e9d870e42d4ecb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "da8fe50d0b626e1cc605956659d01c8149798ebe7f5b48be1e73aa1b659030be",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2023-02-13T14:40:15Z",
    "title_canon_sha256": "aa34e4abbebb6a5c615a592ebea4558946714b4836c631bcd64fd6636d38137c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2302.06402",
    "kind": "arxiv",
    "version": 4
  }
}