Pith Number

pith:NHGVYCTH

pith:2015:NHGVYCTHP55J3TIC4S674WYTOM

not attested not anchored not stored refs pending

Long-term monitoring of the archetype Seyfert galaxy MCG-6-30-15: X-ray, optical and near-IR variability of the corona, disc and torus

I. M. M. McHardy, L. Videla, P. Arevalo, P. Lira, P. Uttley

arxiv:1508.05928 v1 · 2015-08-24 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NHGVYCTHP55J3TIC4S674WYTOM}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:31:31.231030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

69cd5c0a677f7a9dcd02e4bdfe5b137313860c689621538894f2d57849835c48

Aliases

arxiv: 1508.05928 · arxiv_version: 1508.05928v1 · doi: 10.48550/arxiv.1508.05928 · pith_short_12: NHGVYCTHP55J · pith_short_16: NHGVYCTHP55J3TIC · pith_short_8: NHGVYCTH

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/NHGVYCTHP55J3TIC4S674WYTOM \
  | 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: 69cd5c0a677f7a9dcd02e4bdfe5b137313860c689621538894f2d57849835c48

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0fd6dfe6255c5d59445e91a2635799a295fdeab241e5859c35553a3296af202e",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-08-24T19:44:21Z",
    "title_canon_sha256": "d03d2c73ff986644cd02d08573344f287a7fb8d71479f71726bdf86a304982d8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.05928",
    "kind": "arxiv",
    "version": 1
  }
}