Pith Number

pith:GUROLPSN

pith:2015:GUROLPSNBIZGQ4DK7JBMBJWQ7J

not attested not anchored not stored refs pending

The first gamma-ray detection of the narrow-line Seyfert 1 FBQS J1644+2619

Dep. of Physics, F. D'Ammando (DIFA - University of Bologna, INAF-IRA Bologna), J. Larsson (KTH, M. Giroletti (INAF-IRA Bologna), M. Orienti (INAF-IRA Bologna), the Oskar Klein Centre)

arxiv:1503.08226 v2 · 2015-03-27 · astro-ph.HE · 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{GUROLPSNBIZGQ4DK7JBMBJWQ7J}

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	2026-05-18T01:36:54.039258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3522e5be4d0a3268706afa42c0a6d0fa7fc3bf109c1934e478261a495c988895

Aliases

arxiv: 1503.08226 · arxiv_version: 1503.08226v2 · doi: 10.48550/arxiv.1503.08226 · pith_short_12: GUROLPSNBIZG · pith_short_16: GUROLPSNBIZGQ4DK · pith_short_8: GUROLPSN

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/GUROLPSNBIZGQ4DK7JBMBJWQ7J \
  | 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: 3522e5be4d0a3268706afa42c0a6d0fa7fc3bf109c1934e478261a495c988895

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33301159e5e0b851a44865c8eccf944d809063cbd7f15f1c32b8751b04f20928",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2015-03-27T20:50:58Z",
    "title_canon_sha256": "3bce53e4edec20605815125dc6c1eec8971b3facc1dcaec90e605c370c752817"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.08226",
    "kind": "arxiv",
    "version": 2
  }
}