Pith Number

pith:4HOPJFM2

pith:2015:4HOPJFM2YMOOTEZ6O2ALVRB2AK

not attested not anchored not stored refs pending

On Estimating the High-Energy Cutoff in the X-ray Spectra of Black Holes via Reflection Spectroscopy

James F. Steiner, Javier A. Garcia, Jeffrey E. McClintock, Joern Wilms, Mason L. Keck, Thomas Dauser

arxiv:1505.03616 v2 · 2015-05-14 · astro-ph.HE · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4HOPJFM2YMOOTEZ6O2ALVRB2AK}

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	2026-05-18T01:35:47.841790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1dcf4959ac31ce9933e7680bac43a02a7cee648ab3ff82d8c47b322586dd79a

Aliases

arxiv: 1505.03616 · arxiv_version: 1505.03616v2 · doi: 10.48550/arxiv.1505.03616 · pith_short_12: 4HOPJFM2YMOO · pith_short_16: 4HOPJFM2YMOOTEZ6 · pith_short_8: 4HOPJFM2

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/4HOPJFM2YMOOTEZ6O2ALVRB2AK \
  | 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: e1dcf4959ac31ce9933e7680bac43a02a7cee648ab3ff82d8c47b322586dd79a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04e558857165cf11f8d77c1d193e322bd0d0a5964e3271ec0006da7687624795",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-05-14T04:11:57Z",
    "title_canon_sha256": "6121e387b7c764699c5b20525d34070410062d66aae3ca6559fc75ab0a4dd71e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.03616",
    "kind": "arxiv",
    "version": 2
  }
}