Pith Number

pith:ETXJCNKO

pith:2011:ETXJCNKOBCUJG74IV5MVNJO7VL

not attested not anchored not stored refs pending

Cosmic Train Wreck by Massive Black Holes: Discovery of a kpc-Scale Triple Active Galactic Nucleus

Michael A. Strauss, Xin Liu, Yue Shen

arxiv:1104.3391 v2 · 2011-04-18 · 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{ETXJCNKOBCUJG74IV5MVNJO7VL}

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	2026-05-18T02:02:23.847348Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24ee91354e08a8937f88af5956a5dfaaf9de94e4af94577ed84cf559503dcc8f

Aliases

arxiv: 1104.3391 · arxiv_version: 1104.3391v2 · doi: 10.48550/arxiv.1104.3391 · pith_short_12: ETXJCNKOBCUJ · pith_short_16: ETXJCNKOBCUJG74I · pith_short_8: ETXJCNKO

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/ETXJCNKOBCUJG74IV5MVNJO7VL \
  | 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: 24ee91354e08a8937f88af5956a5dfaaf9de94e4af94577ed84cf559503dcc8f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "62232119e973a77d52d1434103caa2e85a98e98c232ab7e4c9cf569d6a0d22d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-04-18T06:08:51Z",
    "title_canon_sha256": "f66c4f49f799af15bba6fdcf9c85006837b0d00ebea9d070c35da0c3805b9105"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.3391",
    "kind": "arxiv",
    "version": 2
  }
}