Pith Number

pith:RA72DBSX

pith:2018:RA72DBSXQ5YHHGBW7WJ4LZCSCC

not attested not anchored not stored refs pending

Fast-spinning black holes inferred from symmetrically limb-brightened radio jets

Kazuhiro Hada, Kazuya Takahashi, Kenji Toma, Masanori Nakamura, Motoki Kino

arxiv:1802.00292 v3 · 2018-02-01 · 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{RA72DBSXQ5YHHGBW7WJ4LZCSCC}

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	2026-05-17T23:59:17.685308Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

883fa186578770739836fd93c5e452109d34a7a75cd322f7cf65759e827a3cba

Aliases

arxiv: 1802.00292 · arxiv_version: 1802.00292v3 · doi: 10.48550/arxiv.1802.00292 · pith_short_12: RA72DBSXQ5YH · pith_short_16: RA72DBSXQ5YHHGBW · pith_short_8: RA72DBSX

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/RA72DBSXQ5YHHGBW7WJ4LZCSCC \
  | 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: 883fa186578770739836fd93c5e452109d34a7a75cd322f7cf65759e827a3cba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7b75d0bee194165cf34cdfc54542c3b259f69d4050e1934a19c938d5b29d86ce",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-02-01T14:06:06Z",
    "title_canon_sha256": "48d6eda357be59cea8546e14c44d11eb9a1f38fbaeb53c7d2365707e89af0d02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.00292",
    "kind": "arxiv",
    "version": 3
  }
}