Pith Number

pith:RTRHP3Q2

pith:2017:RTRHP3Q263PNPXJVEBVMF7FLWZ

not attested not anchored not stored refs pending

X-ray spectroscopy of the z=6.4 quasar J1148+5251

Andrea Ferrara, Andrea Pallottini, Chiara Feruglio, Cristian Vignali, Enrico Piconcelli, Fabrizio Fiore, Luca Zappacosta, Maria Carmela Orofino, Roberto Gilli, Roberto Maiolino, Roberto Neri, Simona Gallerani

arxiv:1702.07349 v1 · 2017-02-23 · astro-ph.GA · 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{RTRHP3Q263PNPXJVEBVMF7FLWZ}

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	2026-05-18T00:48:14.468707Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8ce277ee1af6ded7dd35206ac2fcabb66715ef41028d9de887d49bc6a3371849

Aliases

arxiv: 1702.07349 · arxiv_version: 1702.07349v1 · doi: 10.48550/arxiv.1702.07349 · pith_short_12: RTRHP3Q263PN · pith_short_16: RTRHP3Q263PNPXJV · pith_short_8: RTRHP3Q2

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/RTRHP3Q263PNPXJVEBVMF7FLWZ \
  | 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: 8ce277ee1af6ded7dd35206ac2fcabb66715ef41028d9de887d49bc6a3371849

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f54c3341186ca0cb762dc750d7afe14d28f9572369471738d7c7f567ba281c1f",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-02-23T19:00:01Z",
    "title_canon_sha256": "38250fd6a5a73ac690265d0c4a04cbfd64a4852fd268a1ac7da4b728c856ee08"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1702.07349",
    "kind": "arxiv",
    "version": 1
  }
}