Pith Number

pith:A7WTXKVW

pith:2020:A7WTXKVWLW6DV4ZBOA6BUGMRS7

not attested not anchored not stored refs pending

The Fates of Merging Supermassive Black Holes and a Proposal for a New Class of X-Ray Sources

Andreas H.W. Kupper, Charles Zivancev, Jeremiah Ostriker

arxiv:2004.06083 v3 · 2020-04-13 · 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{A7WTXKVWLW6DV4ZBOA6BUGMRS7}

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.

Cited by

1 paper in Pith

NPO: Learning Alignment and Meta-Alignment through Structured Human Feedback

Receipt and verification

First computed	2026-07-05T01:32:03.097092Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

07ed3baab65dbc3af321703c1a199197c6a8847a9fa1622eca826219cb3eeed9

Aliases

arxiv: 2004.06083 · arxiv_version: 2004.06083v3 · doi: 10.48550/arxiv.2004.06083 · pith_short_12: A7WTXKVWLW6D · pith_short_16: A7WTXKVWLW6DV4ZB · pith_short_8: A7WTXKVW

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/A7WTXKVWLW6DV4ZBOA6BUGMRS7 \
  | 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: 07ed3baab65dbc3af321703c1a199197c6a8847a9fa1622eca826219cb3eeed9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "519e630acadec8c4aec6dbb42b5a08f860c2ff1802d89cac8ed5a4499bc15f9f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-04-13T17:32:05Z",
    "title_canon_sha256": "346ba061d9be8703c9bc287e609995c5f550b6f899b24c8cbd7753f2b8ed8bd0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2004.06083",
    "kind": "arxiv",
    "version": 3
  }
}