Pith Number

pith:25RRPDLZ

pith:2017:25RRPDLZ2HQMNXYOR64F4B5HSM

not attested not anchored not stored refs pending

The X-ray reflection spectrum of the radio-loud quasar 4C 74.26

Andrew Fabian, Anne Lohfink, Charles Hailey, Claudio Ricci, Daniel Stern, David Ballantyne, Duncan Farrah, Finn Christensen, Fiona Harrison, Javier Garcia, Peter Boorman, Steven Boggs, William Craig, William Zhang

arxiv:1704.03673 v1 · 2017-04-12 · 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{25RRPDLZ2HQMNXYOR64F4B5HSM}

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	2026-05-18T00:42:28.931920Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d763178d79d1e0c6df0e8fb85e07a7931637c679fdd3d0c9893420a1ab3a321e

Aliases

arxiv: 1704.03673 · arxiv_version: 1704.03673v1 · doi: 10.48550/arxiv.1704.03673 · pith_short_12: 25RRPDLZ2HQM · pith_short_16: 25RRPDLZ2HQMNXYO · pith_short_8: 25RRPDLZ

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/25RRPDLZ2HQMNXYOR64F4B5HSM \
  | 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: d763178d79d1e0c6df0e8fb85e07a7931637c679fdd3d0c9893420a1ab3a321e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0594fb8a1172c77c33a35b174221bf0fb74b5142a94a2f2e86ad1ba14f6a322",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2017-04-12T09:45:13Z",
    "title_canon_sha256": "0d553b5da087af6865983214a22b5c0a9b74cc382f1c40432d8447f25be4851d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.03673",
    "kind": "arxiv",
    "version": 1
  }
}