Pith Number

pith:MUZ4K4Y6

pith:2012:MUZ4K4Y6Z6ZA6CUYFCVIJ3QPMO

not attested not anchored not stored refs pending

Ultraviolet and X-ray variability of NGC 4051 over 45 days with XMM-Newton and Swift

P. Uttley, S. Vaughan, W. N. Alston

arxiv:1210.8329 v1 · 2012-10-31 · astro-ph.HE · 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{MUZ4K4Y6Z6ZA6CUYFCVIJ3QPMO}

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	2026-05-18T01:53:28.845144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6533c5731ecfb20f0a9828aa84ee0f63bb159220c2739c66b88e22d359eb5b90

Aliases

arxiv: 1210.8329 · arxiv_version: 1210.8329v1 · doi: 10.48550/arxiv.1210.8329 · pith_short_12: MUZ4K4Y6Z6ZA · pith_short_16: MUZ4K4Y6Z6ZA6CUY · pith_short_8: MUZ4K4Y6

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/MUZ4K4Y6Z6ZA6CUYFCVIJ3QPMO \
  | 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: 6533c5731ecfb20f0a9828aa84ee0f63bb159220c2739c66b88e22d359eb5b90

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "18101202f9139033c0b53dbe9d49faf24695cf858f812c86bcae37ac616f7f8e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-10-31T13:41:16Z",
    "title_canon_sha256": "c258aba5f2e8952fad27c5bfcbb6175c8a2f86b6f9b7dd0d1d82580fc7e615a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.8329",
    "kind": "arxiv",
    "version": 1
  }
}