Pith Number

pith:HQTYZH2Q

pith:2015:HQTYZH2QD7DGQQ7KZT3J776T2I

not attested not anchored not stored refs pending

Parent population of flat-spectrum radio-loud narrow-line Seyfert 1 galaxies

(2) INAF Brera, (3) Purdue University, (4) Ohio State University), Bradley M. Peterson (4), Giovanni La Mura (1), Joseph L. Richards (3), Luigi Foschini (2), Marco Berton (1), Matthew L. Lister (3), Piero Rafanelli (1) ((1) Universit\`a di Padova, Smita Mathur (4), Stefano Ciroi (1), Valentina Cracco (1)

arxiv:1504.02772 v2 · 2015-04-10 · 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{HQTYZH2QD7DGQQ7KZT3J776T2I}

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	2026-05-18T02:03:32.950110Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c278c9f501fc66843eaccf69fffd3d2071e925dc8d6fd7140705e4a44978b8b

Aliases

arxiv: 1504.02772 · arxiv_version: 1504.02772v2 · doi: 10.48550/arxiv.1504.02772 · pith_short_12: HQTYZH2QD7DG · pith_short_16: HQTYZH2QD7DGQQ7K · pith_short_8: HQTYZH2Q

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/HQTYZH2QD7DGQQ7KZT3J776T2I \
  | 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: 3c278c9f501fc66843eaccf69fffd3d2071e925dc8d6fd7140705e4a44978b8b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de84e868f29e72804094ccbdb96a0361d2681ea09bd29a8d173c3f5616fcf2a3",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-04-10T19:59:28Z",
    "title_canon_sha256": "7987a824ca918511e0854e39d65cfde866d477647f0cacdedef15bbbc7163635"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.02772",
    "kind": "arxiv",
    "version": 2
  }
}