Pith Number

pith:HMDW6QGF

pith:2016:HMDW6QGFOEI3KA3RVE6SHQWRUB

not attested not anchored not stored refs pending

QSFit: Automatic analysis of optical AGN spectra

(2) INAF-Istituto di Astrofisica Spaziale e Fisica Cosmica, (3) INAF-Osservatorio Astronomico di Brera, (4) Universita` di Milano-Bicocca, (5) University of Southampton), Bologna, F. Shankar (5), G. Calderone (1), G. Ghisellini (3), L. Nicastro (2), M. Colpi (4) ((1) INAF-Osservatorio Astronomico di Trieste, M. Dotti (4), T. Sbarrato (4)

arxiv:1612.01580 v2 · 2016-12-05 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HMDW6QGFOEI3KA3RVE6SHQWRUB}

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	2026-05-18T00:35:43.836109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b076f40c57111b50371a93d23c2d1a063cd6bad0e8e0dcc214f5e532053e4d2

Aliases

arxiv: 1612.01580 · arxiv_version: 1612.01580v2 · doi: 10.48550/arxiv.1612.01580 · pith_short_12: HMDW6QGFOEI3 · pith_short_16: HMDW6QGFOEI3KA3R · pith_short_8: HMDW6QGF

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/HMDW6QGFOEI3KA3RVE6SHQWRUB \
  | 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: 3b076f40c57111b50371a93d23c2d1a063cd6bad0e8e0dcc214f5e532053e4d2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6e4d3006531a3f3073d30f9664a2f7e0e095bf5cc95f0abd073b03d78058afe",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-12-05T22:32:57Z",
    "title_canon_sha256": "217251336150a7d2bf2952af429f1b52665e1f144bd624fef328c4aa018138d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1612.01580",
    "kind": "arxiv",
    "version": 2
  }
}