Pith Number

pith:MG4LBJ5Y

pith:2018:MG4LBJ5Y5WYQ3HCGLCEOEUC4G6

not attested not anchored not stored refs pending

Revealing the Galactic Population of BHs

Greg Sivakoff (Alberta), James Miller-Jones (Curtin), Jay Strader (Michigan State), Laura Chomiuk, Thomas J. Maccarone (Texas Tech)

arxiv:1806.07270 v1 · 2018-06-18 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MG4LBJ5Y5WYQ3HCGLCEOEUC4G6}

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	2026-05-18T00:12:51.433587Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61b8b0a7b8edb10d9c465888e2505c37a1b7cc33ad74290351da2f07cc747e29

Aliases

arxiv: 1806.07270 · arxiv_version: 1806.07270v1 · doi: 10.48550/arxiv.1806.07270 · pith_short_12: MG4LBJ5Y5WYQ · pith_short_16: MG4LBJ5Y5WYQ3HCG · pith_short_8: MG4LBJ5Y

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/MG4LBJ5Y5WYQ3HCGLCEOEUC4G6 \
  | 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: 61b8b0a7b8edb10d9c465888e2505c37a1b7cc33ad74290351da2f07cc747e29

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e83fbbd20626c0caf46981daf224a46f96b8aba038aadb770cd881eb6f9f6bb3",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-06-18T17:22:12Z",
    "title_canon_sha256": "17f953d4bf8b9c582b0f9ab467693e7959b9b147133094abf1b509f50b261784"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.07270",
    "kind": "arxiv",
    "version": 1
  }
}