Pith Number

pith:2YKKQHRC

pith:2011:2YKKQHRCHEICUUWFPHOVDE2RDM

not attested not anchored not stored refs pending

The rapid X-ray variability of NGC 4051

K. A. Pounds, K. Nandra, P. Uttley, S. Vaughan, T. E. Strohmayer

arxiv:1101.1802 v1 · 2011-01-10 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2YKKQHRCHEICUUWFPHOVDE2RDM}

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	2026-05-18T02:03:43.559622Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d614a81e2239102a52c579dd5193511b20658277a115520e23cf36ab6c706b89

Aliases

arxiv: 1101.1802 · arxiv_version: 1101.1802v1 · doi: 10.48550/arxiv.1101.1802 · pith_short_12: 2YKKQHRCHEIC · pith_short_16: 2YKKQHRCHEICUUWF · pith_short_8: 2YKKQHRC

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/2YKKQHRCHEICUUWFPHOVDE2RDM \
  | 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: d614a81e2239102a52c579dd5193511b20658277a115520e23cf36ab6c706b89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7efb7d7e37d82970824a8943d8c774881792ecc367e2ec656ae76361cbecf9b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-01-10T13:12:39Z",
    "title_canon_sha256": "e820428ba73cd69a4fddbbf033672f6e82e01c2d951c3e463d11bc20754dc271"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1802",
    "kind": "arxiv",
    "version": 1
  }
}