Pith Number

pith:FCV6IWFM

pith:2011:FCV6IWFMTO7Q6Z76IYHQ2LP5H7

not attested not anchored not stored refs pending

An XMM-Newton view of the `bare' nucleus of Fairall 9

D. Emmanoulopoulos, F. Nicastro, I. E. Papadakis, I. M. McHardy, P. Arevalo, S. Bianchi

arxiv:1104.0044 v1 · 2011-03-31 · astro-ph.CO · 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{FCV6IWFMTO7Q6Z76IYHQ2LP5H7}

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	2026-05-18T02:02:41.786066Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28abe458ac9bbf0f67fe460f0d2dfd3fd1b45e8d7bbb9429b1398ba96d1c7abe

Aliases

arxiv: 1104.0044 · arxiv_version: 1104.0044v1 · doi: 10.48550/arxiv.1104.0044 · pith_short_12: FCV6IWFMTO7Q · pith_short_16: FCV6IWFMTO7Q6Z76 · pith_short_8: FCV6IWFM

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/FCV6IWFMTO7Q6Z76IYHQ2LP5H7 \
  | 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: 28abe458ac9bbf0f67fe460f0d2dfd3fd1b45e8d7bbb9429b1398ba96d1c7abe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "766df18adbfe3a47ef40e0790d72949f14a0b35eb981d958f9fd0d87b13a213d",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-03-31T22:05:54Z",
    "title_canon_sha256": "7f7a37d472018d37a0980a35be5b4adbce996a01ac4acb82285fb42d508e8cf2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0044",
    "kind": "arxiv",
    "version": 1
  }
}