Pith Number

pith:3B2MT7FX

pith:2021:3B2MT7FXQBAQYQOLFRIXPTSVFE

not attested not anchored not stored refs pending

Wandering of the central black hole in a galactic nucleus and correlation of the black hole mass with the bulge mass

Hajime Inoue

arxiv:2102.03478 v1 · 2021-02-06 · 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{3B2MT7FXQBAQYQOLFRIXPTSVFE}

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	2026-07-05T02:13:24.182446Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d874c9fcb780410c41cb2c5177ce552934b2da10e1a4cd94b077c64f60f23a60

Aliases

arxiv: 2102.03478 · arxiv_version: 2102.03478v1 · doi: 10.48550/arxiv.2102.03478 · pith_short_12: 3B2MT7FXQBAQ · pith_short_16: 3B2MT7FXQBAQYQOL · pith_short_8: 3B2MT7FX

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/3B2MT7FXQBAQYQOLFRIXPTSVFE \
  | 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: d874c9fcb780410c41cb2c5177ce552934b2da10e1a4cd94b077c64f60f23a60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7187709a562d52aecc6f3474d2b407c8c9d0d94d21e0d7780f2d9a68d5b69195",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2021-02-06T02:27:41Z",
    "title_canon_sha256": "4b1b7e617deba25d09a165094d4b39d6496f029e1e8c49288fab25212aec3733"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.03478",
    "kind": "arxiv",
    "version": 1
  }
}