Pith Number

pith:53IZEB4Q

pith:2013:53IZEB4QUPETNJ3ZKTMKX35AYS

not attested not anchored not stored refs pending

Computing model independent perturbations in dark energy and modified gravity

Jonathan A. Pearson, Richard A. Battye

arxiv:1311.6737 v2 · 2013-11-26 · astro-ph.CO · gr-qc · 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{53IZEB4QUPETNJ3ZKTMKX35AYS}

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	2026-05-18T01:46:05.957603Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eed1920790a3c936a77954d8abefa0c48f8189fbe717d28064a390cbc246b460

Aliases

arxiv: 1311.6737 · arxiv_version: 1311.6737v2 · doi: 10.48550/arxiv.1311.6737 · pith_short_12: 53IZEB4QUPET · pith_short_16: 53IZEB4QUPETNJ3Z · pith_short_8: 53IZEB4Q

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/53IZEB4QUPETNJ3ZKTMKX35AYS \
  | 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: eed1920790a3c936a77954d8abefa0c48f8189fbe717d28064a390cbc246b460

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "089783983bc23c127a053d4c30eec1f1674fe20e30309a0bf36bcc353dd1db70",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-th"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-26T16:59:40Z",
    "title_canon_sha256": "5df950eca9ab303a7d3f0fbe6b0f43afa888583a6c4868129bde2e79cd6b60ff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.6737",
    "kind": "arxiv",
    "version": 2
  }
}