Pith Number

pith:4XKYSAXJ

pith:2018:4XKYSAXJLUV6GPICYP763UEIOT

not attested not anchored not stored refs pending

Expected intermediate-mass black holes in the Virgo cluster. I. Early-type galaxies

Alister W. Graham, Roberto Soria

arxiv:1812.01231 v2 · 2018-12-04 · astro-ph.HE · 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{4XKYSAXJLUV6GPICYP763UEIOT}

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	2026-05-17T23:48:43.341577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5d58902e95d2be33d02c3ffedd08874d403a51284dc121aba6109d81762ddb3

Aliases

arxiv: 1812.01231 · arxiv_version: 1812.01231v2 · doi: 10.48550/arxiv.1812.01231 · pith_short_12: 4XKYSAXJLUV6 · pith_short_16: 4XKYSAXJLUV6GPIC · pith_short_8: 4XKYSAXJ

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/4XKYSAXJLUV6GPICYP763UEIOT \
  | 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: e5d58902e95d2be33d02c3ffedd08874d403a51284dc121aba6109d81762ddb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c63a1572fac1bc7cea82b1de572a1a760c0be71de7284ae89b411cd9bbc81328",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-12-04T05:54:11Z",
    "title_canon_sha256": "90a3e609d1912490dd6dcf18445f0596a53d72109d8d13eaac08c09e5103c142"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.01231",
    "kind": "arxiv",
    "version": 2
  }
}