Pith Number

pith:7SUF2XUR

pith:2016:7SUF2XUR6UDE6ESQOH544YQ747

not attested not anchored not stored refs pending

Spectral variability of the 3C 390.3 nucleus for more than twenty years. I. Variability of the broad and narrow emission-line fluxes

G. A. Borman, S. G. Sergeev, S. V. Nazarov

arxiv:1611.08376 v1 · 2016-11-25 · 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{7SUF2XUR6UDE6ESQOH544YQ747}

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	2026-05-18T00:54:26.257819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fca85d5e91f5064f125071fbce621fe7dc6cf320b0aa7f0bd27df0965e583c71

Aliases

arxiv: 1611.08376 · arxiv_version: 1611.08376v1 · doi: 10.48550/arxiv.1611.08376 · pith_short_12: 7SUF2XUR6UDE · pith_short_16: 7SUF2XUR6UDE6ESQ · pith_short_8: 7SUF2XUR

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/7SUF2XUR6UDE6ESQOH544YQ747 \
  | 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: fca85d5e91f5064f125071fbce621fe7dc6cf320b0aa7f0bd27df0965e583c71

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "48388f96708501c2913de99dc29a7b371e4252bfc1e4bfd41dcbff367ca82739",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2016-11-25T08:15:52Z",
    "title_canon_sha256": "3e76e37417b3e723ce95681c796ddbb3eb72baf0c3157f7dc2e0feb819450095"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.08376",
    "kind": "arxiv",
    "version": 1
  }
}