Pith Number

pith:2UR6SDFN

pith:2010:2UR6SDFN6D6KO43OJ32SAPUA4U

not attested not anchored not stored refs pending

Massive black holes lurking in Milky Way satellites

J.R. Gair, M.G. Walker, M. Volonteri, S. Van Wassenhove

arxiv:1001.5451 v2 · 2010-01-29 · astro-ph.CO · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2UR6SDFN6D6KO43OJ32SAPUA4U}

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	2026-05-18T02:09:22.024717Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d523e90cadf0fca7736e4ef5203e80e51d2c4f1d72cd38fcfad64c0e1329c36a

Aliases

arxiv: 1001.5451 · arxiv_version: 1001.5451v2 · doi: 10.48550/arxiv.1001.5451 · pith_short_12: 2UR6SDFN6D6K · pith_short_16: 2UR6SDFN6D6KO43O · pith_short_8: 2UR6SDFN

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/2UR6SDFN6D6KO43OJ32SAPUA4U \
  | 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: d523e90cadf0fca7736e4ef5203e80e51d2c4f1d72cd38fcfad64c0e1329c36a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ead2ef8cc0eeed8e853ee8a8ef901bf721b9f0326e55e1174a80304ca15a0a5",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2010-01-29T18:41:29Z",
    "title_canon_sha256": "fb0e24deebabc1949aecb4c6b6f1b9101fdaaddd72937f3fc5016bf61fa9dea6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1001.5451",
    "kind": "arxiv",
    "version": 2
  }
}