Pith Number

pith:QHLOADAF

pith:2018:QHLOADAFVMH36D3CXCOSWJ6WHB

not attested not anchored not stored refs pending

Dynamics of cosmological perturbations at first and second order

Claes Uggla, John Wainwright

arxiv:1808.03200 v2 · 2018-08-09 · gr-qc · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QHLOADAFVMH36D3CXCOSWJ6WHB}

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	2026-05-17T23:55:55.672892Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81d6e00c05ab0fbf0f62b89d2b27d63843aece3c9dfed081f82c1518c5835d76

Aliases

arxiv: 1808.03200 · arxiv_version: 1808.03200v2 · doi: 10.48550/arxiv.1808.03200 · pith_short_12: QHLOADAFVMH3 · pith_short_16: QHLOADAFVMH36D3C · pith_short_8: QHLOADAF

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/QHLOADAFVMH36D3CXCOSWJ6WHB \
  | 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: 81d6e00c05ab0fbf0f62b89d2b27d63843aece3c9dfed081f82c1518c5835d76

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3647faea0aa2ff896c87a2c40d98a338438e9ec052030e806680acc825e4887",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-08-09T15:37:07Z",
    "title_canon_sha256": "6874ac1e21fe09514512164aefe552ad4a223d85de504c297baba7319ab2afaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.03200",
    "kind": "arxiv",
    "version": 2
  }
}