Pith Number

pith:73JRQXJC

pith:2022:73JRQXJCPQUA56NWH6ZGD643IQ

not attested not anchored not stored refs pending

Confirmation of intermediate-mass black holes candidates with X-ray observations

Igor Chilingarian, Ivan Katkov, Ivan Kuzmun, Ivan Zolotukhin, Kirill Grishin, Mariia Demianenko, Victoria Toptun, Vladimir Goradzhanov

arxiv:2201.01075 v1 · 2022-01-04 · 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{73JRQXJCPQUA56NWH6ZGD643IQ}

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	2026-07-05T05:01:17.840334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fed3185d227c280ef9b63fb261fb9b4414f3c4008d9fdd8a297764a4ec05373b

Aliases

arxiv: 2201.01075 · arxiv_version: 2201.01075v1 · doi: 10.48550/arxiv.2201.01075 · pith_short_12: 73JRQXJCPQUA · pith_short_16: 73JRQXJCPQUA56NW · pith_short_8: 73JRQXJC

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/73JRQXJCPQUA56NWH6ZGD643IQ \
  | 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: fed3185d227c280ef9b63fb261fb9b4414f3c4008d9fdd8a297764a4ec05373b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33c2f2a340e26495322a57a74f95ad37907d93a7449eeea6acade64f341bf444",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-01-04T10:35:31Z",
    "title_canon_sha256": "926ae5f7cecb6d363b2e546ed6596e24e946be9e3610152183ae74dd4c7abf74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2201.01075",
    "kind": "arxiv",
    "version": 1
  }
}