Pith Number

pith:3VHM5LFD

pith:2011:3VHM5LFD4V4UGPFIKNQYRFAHC2

not attested not anchored not stored refs pending

Hard X-ray spectral variability of the brightest Seyfert AGN in the Swift/BAT sample

(2) OAR-INAF, 3), (3) CfA, (4) SLAC), F. Nicastro (2, I. E. Papadakis (1), M. Ajello (4) ((1) U. of Crete, M. D. Caballero-Garcia (1)

arxiv:1108.6017 v2 · 2011-08-30 · 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{3VHM5LFD4V4UGPFIKNQYRFAHC2}

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	2026-05-18T02:00:44.577364Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dd4eceaca3e579433ca8536188940716b7346bf3f386edc68e0835bb1a805c51

Aliases

arxiv: 1108.6017 · arxiv_version: 1108.6017v2 · doi: 10.48550/arxiv.1108.6017 · pith_short_12: 3VHM5LFD4V4U · pith_short_16: 3VHM5LFD4V4UGPFI · pith_short_8: 3VHM5LFD

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/3VHM5LFD4V4UGPFIKNQYRFAHC2 \
  | 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: dd4eceaca3e579433ca8536188940716b7346bf3f386edc68e0835bb1a805c51

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5fe78d41fb2ef73725a95690dfdc80cdde38f950371ef8978587c432287f496a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-08-30T17:31:57Z",
    "title_canon_sha256": "ac138f9bac56411a7546ebe635c3c04d11bdf20513e9412cebfe8c9068740e6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.6017",
    "kind": "arxiv",
    "version": 2
  }
}