Pith Number

pith:QR66ENBR

pith:2021:QR66ENBRH4Z6MFX6WWICNS6YEW

not attested not anchored not stored refs pending

Transient obscuration event captured in NGC 3227. I. Continuum model for the broadband spectral energy distribution

B. De Marco, C. Pinto, D. J. Walton, E. Behar, E. Costantini, F. Ursini, G. A. Kriss, G. Branduardi-Raymont, G. Matt, G. Ponti, J. Ebrero, J. Mao, J. S. Kaastra, L. Di Gesu, M. Brotherton, M. Cappi, M. Mehdipour, N. Arav, P.-O. Petrucci, S. Bianchi, S. Grafton-Waters, S. Kaspi, S. Paltani, Y. Wang

arxiv:2106.14957 v1 · 2021-06-28 · astro-ph.HE · 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{QR66ENBRH4Z6MFX6WWICNS6YEW}

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	2026-07-05T03:10:34.043812Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

847de234313f33e616feb59026cbd82597cb1cf5d8f03a91bf7304e865c4e840

Aliases

arxiv: 2106.14957 · arxiv_version: 2106.14957v1 · doi: 10.48550/arxiv.2106.14957 · pith_short_12: QR66ENBRH4Z6 · pith_short_16: QR66ENBRH4Z6MFX6 · pith_short_8: QR66ENBR

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/QR66ENBRH4Z6MFX6WWICNS6YEW \
  | 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: 847de234313f33e616feb59026cbd82597cb1cf5d8f03a91bf7304e865c4e840

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a8b742b74a2899af4b65562297a33d946958e24144734704d4ca42573747b65",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-06-28T19:48:27Z",
    "title_canon_sha256": "36d1ff5d684a81b86ea87ed639ef3261222057e44d036cc601a7bb5c7faf7199"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.14957",
    "kind": "arxiv",
    "version": 1
  }
}