Pith Number

pith:F3TS6SFI

pith:2021:F3TS6SFISXYTSCCSJIRMZDZAQA

not attested not anchored not stored refs pending

A universal relation between the properties of supermassive black holes, galaxies, and dark matter halos

A. Marasco, A. Marconi, F. Belfiore, F. Fraternali, F. Mannucci, G. Cresci, L. Posti, S. M. Fall

arxiv:2105.10508 v2 · 2021-05-21 · 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{F3TS6SFISXYTSCCSJIRMZDZAQA}

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	2026-07-05T03:08:30.494610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ee72f48a895f13908524a22cc8f208004d5266591c521e634bfe8a2102dc804

Aliases

arxiv: 2105.10508 · arxiv_version: 2105.10508v2 · doi: 10.48550/arxiv.2105.10508 · pith_short_12: F3TS6SFISXYT · pith_short_16: F3TS6SFISXYTSCCS · pith_short_8: F3TS6SFI

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/F3TS6SFISXYTSCCSJIRMZDZAQA \
  | 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: 2ee72f48a895f13908524a22cc8f208004d5266591c521e634bfe8a2102dc804

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "689f981b7b90e585e85ed30da53fd8946d33bc242c9fad0a8fe911558e94b41f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-05-21T18:00:01Z",
    "title_canon_sha256": "5c39c4f6a676a31191c0125826ffe59d62deb04dde1c83690137cabd24b7f7ba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.10508",
    "kind": "arxiv",
    "version": 2
  }
}