Pith Number

pith:Y5ZUJ6SD

pith:2017:Y5ZUJ6SDXQHELTQJ4Y5TKDOKEX

not attested not anchored not stored refs pending

Stringent limits on the masses of the supermassive black holes in seven nearby galaxies

2), (2) INAF-Osservatorio Astronomico di Padova, (3) Max-Planck-Institut fuer extraterrestrische Physik, 4), (4) Universitaets-Sternwarte Muenchen, (5) Centre for Astrophysics Research, A. Beifiori (3, A. Pizzella (1, E. Dalla Bont\`a (1, E. M. Corsini (1, I. Pagotto (1), L. Costantin (1), L. Morelli (1, M. Sarzi (5) ((1) Dipartimento di Fisica e Astronomia `G. Galilei', Universit\`a di Padova, University of Hertfordshire), V. Cuomo (1)

arxiv:1707.06120 v1 · 2017-07-19 · 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{Y5ZUJ6SDXQHELTQJ4Y5TKDOKEX}

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	2026-05-18T00:31:12.213878Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c77344fa43bc0e45ce09e63b350dca25e7f674a62f70bbb21b64b86ec391b93d

Aliases

arxiv: 1707.06120 · arxiv_version: 1707.06120v1 · doi: 10.48550/arxiv.1707.06120 · pith_short_12: Y5ZUJ6SDXQHE · pith_short_16: Y5ZUJ6SDXQHELTQJ · pith_short_8: Y5ZUJ6SD

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/Y5ZUJ6SDXQHELTQJ4Y5TKDOKEX \
  | 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: c77344fa43bc0e45ce09e63b350dca25e7f674a62f70bbb21b64b86ec391b93d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c04a68eaccac6f90ad77f8cb182fbc17861860db75155ad57e232a6e61d4602",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-07-19T14:37:26Z",
    "title_canon_sha256": "4db898e736cb96476e7229a6cd5f02bd004dceabc8908db3bdd7e4600af9c553"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.06120",
    "kind": "arxiv",
    "version": 1
  }
}