Pith Number

pith:5KFEI7UK

pith:2019:5KFEI7UKZYL7NADSPOPBOZCXYX

not attested not anchored not stored refs pending

Sub-Eddington super-massive black hole activity in Fornax early type galaxies

Brendan Miller, Edmund Hodges-Kluck, Elena Gallo, Laura Ferrarese, Nathan Lee, Patrick C\^ot\'e, Rich Plotkin, Tommaso Treu, Vivienne Baldassare

arxiv:1902.03328 v1 · 2019-02-08 · 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{5KFEI7UKZYL7NADSPOPBOZCXYX}

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	2026-05-17T23:49:39.232619Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ea8a447e8ace17f680727b9e176457c5db945ac85f5c3bc1ede0b1ce12fb0a37

Aliases

arxiv: 1902.03328 · arxiv_version: 1902.03328v1 · doi: 10.48550/arxiv.1902.03328 · pith_short_12: 5KFEI7UKZYL7 · pith_short_16: 5KFEI7UKZYL7NADS · pith_short_8: 5KFEI7UK

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/5KFEI7UKZYL7NADSPOPBOZCXYX \
  | 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: ea8a447e8ace17f680727b9e176457c5db945ac85f5c3bc1ede0b1ce12fb0a37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8a63e98469f5651cd3e02bc77ee423ab3b1f55a05db4bf87c7c72b200539225e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-02-08T23:48:18Z",
    "title_canon_sha256": "78585e9eaaa205a9a443403f76cfad41e92bac0fbe9d32e30498dc063a17d209"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03328",
    "kind": "arxiv",
    "version": 1
  }
}