Pith Number

pith:2SIYQN5N

pith:2015:2SIYQN5NC2U5VUU6XYPYNSJQKU

not attested not anchored not stored refs pending

Line and Continuum Variability in Active Galaxies

2), (2) Department of Astronomy, 3), (3) Max-Planck-Institut fuer Radioastronomie, (4) Key laboratory for Research in Galaxies, 5) ((1) I. Physikalisches Institut, (5) Polar Research Institute of China, A. Eckart (1, Bonn, Cosmology, Department of Astronomy, Faculty of Science, G. Busch (1), Germany, H. Zhou (4, J. Zuther (1), M. Garc\'ia-Mar\'in (1), M. Horrobin (1), M. Valencia-S. (1), Shanghai), Technology of China, The University of Sciences, Universit\"at zu K\"oln, University of Baghdad, Y. E. Rashed (1

arxiv:1509.01403 v2 · 2015-09-04 · 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{2SIYQN5NC2U5VUU6XYPYNSJQKU}

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	2026-05-18T01:28:46.389383Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4918837ad16a9dad29ebe1f86c9305524cb9fe3a678c0e1bb739602115e4d4a

Aliases

arxiv: 1509.01403 · arxiv_version: 1509.01403v2 · doi: 10.48550/arxiv.1509.01403 · pith_short_12: 2SIYQN5NC2U5 · pith_short_16: 2SIYQN5NC2U5VUU6 · pith_short_8: 2SIYQN5N

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/2SIYQN5NC2U5VUU6XYPYNSJQKU \
  | 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: d4918837ad16a9dad29ebe1f86c9305524cb9fe3a678c0e1bb739602115e4d4a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f523d940526ae2b1aa885ebce2b94827e7f8fb283287b5b21ed7dfa2a103d8e2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-04T11:18:40Z",
    "title_canon_sha256": "947a2a0e684e9350aaa1e5277041d1822770d4e123d4ef0dc9522eaa177763a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.01403",
    "kind": "arxiv",
    "version": 2
  }
}