Pith Number

pith:OEI5K2YG

pith:2021:OEI5K2YGDQ4K36CEHGOB5VVTYI

not attested not anchored not stored refs pending

Nonlinear Dynamics of Quadratic Gravity in Spherical Symmetry

Aaron Held, Hyun Lim

arxiv:2104.04010 v2 · 2021-04-08 · 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{OEI5K2YGDQ4K36CEHGOB5VVTYI}

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	2026-07-05T03:24:09.517415Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7111d56b061c38adf844399c1ed6b3c213e8d54d94dcb74895742647d3a5bc1e

Aliases

arxiv: 2104.04010 · arxiv_version: 2104.04010v2 · doi: 10.48550/arxiv.2104.04010 · pith_short_12: OEI5K2YGDQ4K · pith_short_16: OEI5K2YGDQ4K36CE · pith_short_8: OEI5K2YG

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/OEI5K2YGDQ4K36CEHGOB5VVTYI \
  | 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: 7111d56b061c38adf844399c1ed6b3c213e8d54d94dcb74895742647d3a5bc1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0256e527c26ffa9a672759ef86ea7e871ba89bfe51c674e4c505bc1be4d0755",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2021-04-08T18:59:57Z",
    "title_canon_sha256": "b70c354dcdd399af45bd3bb96716546edf017aa53e65b8da506e44c5985a76ae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.04010",
    "kind": "arxiv",
    "version": 2
  }
}