Pith Number

pith:5DM3N5SN

pith:2011:5DM3N5SNCOJ3PARPYKIQ5FAM5F

not attested not anchored not stored refs pending

The Black-Hole Mass in M87 from Gemini/NIFS Adaptive Optics Observations

Douglas Richstone, Jeremy Murphy, Joshua Adams, Karl Gebhardt, Kayhan Gultekin, Scott Tremaine, S. M. Faber, Tod R. Lauer

arxiv:1101.1954 v1 · 2011-01-10 · 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{5DM3N5SNCOJ3PARPYKIQ5FAM5F}

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	2026-05-18T02:03:43.335509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8d9b6f64d1393b7822fc2910e940ce948b2188252f36f009600b01f44dcc13b

Aliases

arxiv: 1101.1954 · arxiv_version: 1101.1954v1 · doi: 10.48550/arxiv.1101.1954 · pith_short_12: 5DM3N5SNCOJ3 · pith_short_16: 5DM3N5SNCOJ3PARP · pith_short_8: 5DM3N5SN

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/5DM3N5SNCOJ3PARPYKIQ5FAM5F \
  | 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: e8d9b6f64d1393b7822fc2910e940ce948b2188252f36f009600b01f44dcc13b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "632c59cf9e97f21ec258e84966d2c67c14de86ca4dd648528ec3d2a87c5c0d06",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-01-10T21:00:04Z",
    "title_canon_sha256": "7a083758277993005b4262adb775c5e1e6f9b934e13bf6b672f993c5aa36932e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1954",
    "kind": "arxiv",
    "version": 1
  }
}