Pith Number

pith:Y4WW55DA

pith:2015:Y4WW55DAAHTLPWURLHDC2K5UXT

not attested not anchored not stored refs pending

Calibration of the NuSTAR High Energy Focusing X-ray Telescope

Brian W. Grefenstette, Charles J. Hailey, Craig B. Markwardt, Daniel Stern, Dominic J. Walton, Felix Fuerst, Finn E. Christensen, Fiona A. Harrison, Hiromasa Miyasaki, Hongjun An, Karl Forster, Kristin K. Madsen, Matteo Bachetti, Matteo Perri, Niels J{\o}rgen Westergaard, Simonetta Puccetti, Steve Boggs, Takao Kitaguchi, Varun Bhalerao, Vikram Rana, William W. Craig, William W. Zhang

arxiv:1504.01672 v2 · 2015-04-07 · astro-ph.IM · 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{Y4WW55DAAHTLPWURLHDC2K5UXT}

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	2026-05-18T01:33:05.967304Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c72d6ef46001e6b7da9159c62d2bb4bcf725b9799f56b1b2403ca9058607ebee

Aliases

arxiv: 1504.01672 · arxiv_version: 1504.01672v2 · doi: 10.48550/arxiv.1504.01672 · pith_short_12: Y4WW55DAAHTL · pith_short_16: Y4WW55DAAHTLPWUR · pith_short_8: Y4WW55DA

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/Y4WW55DAAHTLPWURLHDC2K5UXT \
  | 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: c72d6ef46001e6b7da9159c62d2bb4bcf725b9799f56b1b2403ca9058607ebee

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04fc835445bcf7a6819120d70eb332797512adb0b49717585524ba767886a127",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-04-07T17:12:33Z",
    "title_canon_sha256": "b534ff6b0959c488e0b127228e5e035ebd164232c4a53257daa3b6cb5b16fd80"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.01672",
    "kind": "arxiv",
    "version": 2
  }
}