Pith Number

pith:MHLDKYOD

pith:2016:MHLDKYOD4F6LDYBRJ7KIQDCDIZ

not attested not anchored not stored refs pending

UV and X-Ray Variability of the Narrow-Line Seyfert 1 Galaxy Ark 564

(2) Inter-University Centre for Astronomy & Astrophysics, (3) Physics Department, Ajit K. Kembhavi (2) ((1) Department of Physics, Bishops University, Canada), Gulab C. Dewangan (2), India, Kerala, Kozhencherry, Ninan Sajeeth Philip (1), Pune, QC, Ranjeev Misra (2), Savithri H. Ezhikode (1), Shruti Tripathi (3), St. Thomas college

arxiv:1603.02404 v1 · 2016-03-08 · 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{MHLDKYOD4F6LDYBRJ7KIQDCDIZ}

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	2026-05-18T01:11:12.549477Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61d63561c3e17cb1e0314fd4880c4346597f55a6a39011da3752d95e651a76b8

Aliases

arxiv: 1603.02404 · arxiv_version: 1603.02404v1 · doi: 10.48550/arxiv.1603.02404 · pith_short_12: MHLDKYOD4F6L · pith_short_16: MHLDKYOD4F6LDYBR · pith_short_8: MHLDKYOD

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/MHLDKYOD4F6LDYBRJ7KIQDCDIZ \
  | 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: 61d63561c3e17cb1e0314fd4880c4346597f55a6a39011da3752d95e651a76b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "57da868d8e8118a8c4fa74e04dd9ab09ce7cc4cab46f997ed28dad1752d64db0",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-03-08T07:39:35Z",
    "title_canon_sha256": "9717644e4a4654e33f82f386f9332930df23e2507d0e56418279549f3dbba07b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.02404",
    "kind": "arxiv",
    "version": 1
  }
}