Pith Number

pith:JR2G4NI7

pith:2018:JR2G4NI74PE3HSPTYAIPLOFUGH

not attested not anchored not stored refs pending

Catalog of supermassive black holes for interferometric observations

A.M. Malinovsky (P.N. Lebedev Physical Institute of Russian Academy of Sciences), E.V. Mikheeva, S.V. Repin, V.N. Lukash

arxiv:1811.00808 v1 · 2018-11-02 · 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{JR2G4NI74PE3HSPTYAIPLOFUGH}

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	2026-05-17T23:47:59.268471Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4c746e351fe3c9b3c9f3c010f5b8b431f0e29c4545ad8aae66f3890c49ed56bc

Aliases

arxiv: 1811.00808 · arxiv_version: 1811.00808v1 · doi: 10.48550/arxiv.1811.00808 · pith_short_12: JR2G4NI74PE3 · pith_short_16: JR2G4NI74PE3HSPT · pith_short_8: JR2G4NI7

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/JR2G4NI74PE3HSPTYAIPLOFUGH \
  | 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: 4c746e351fe3c9b3c9f3c010f5b8b431f0e29c4545ad8aae66f3890c49ed56bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9189ffb5959101803bf61e0c5a433093a2ef89d81d10d84b5ca294b116cd89d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-11-02T10:40:21Z",
    "title_canon_sha256": "fa6dea139d370e1f03b4b1dfa870aa38b249725913deb9ccc066ed16de895dc6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.00808",
    "kind": "arxiv",
    "version": 1
  }
}