Pith Number

pith:BAQNSPF5

pith:2011:BAQNSPF5X3SVFXXLGF2A6FS3QL

not attested not anchored not stored refs pending

Mass of the Southern Black Hole in NGC 6240 from Laser Guide Star Adaptive Optics

Anne M. Medling, Claire E. Max, Gabriela Canalizo, Hauke Engel, Richard I. Davies, S. Mark Ammons

arxiv:1108.5180 v1 · 2011-08-25 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BAQNSPF5X3SVFXXLGF2A6FS3QL}

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	2026-05-18T02:00:47.969804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0820d93cbdbee552deeb31740f165b82c655d8f2f00d1ab4400fdc395e461dcd

Aliases

arxiv: 1108.5180 · arxiv_version: 1108.5180v1 · doi: 10.48550/arxiv.1108.5180 · pith_short_12: BAQNSPF5X3SV · pith_short_16: BAQNSPF5X3SVFXXL · pith_short_8: BAQNSPF5

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/BAQNSPF5X3SVFXXLGF2A6FS3QL \
  | 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: 0820d93cbdbee552deeb31740f165b82c655d8f2f00d1ab4400fdc395e461dcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7fab15a9d542938442b93bc89ad593d8d19ec2ef9954e71157b0f59bb9a2f4f2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-08-25T20:01:31Z",
    "title_canon_sha256": "4d2ba025742cd80e2356d3077d56b4e093b81cc8315b9e7bcd16a1e54b2ef319"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.5180",
    "kind": "arxiv",
    "version": 1
  }
}