Pith Number

pith:SP7I7QFV

pith:2013:SP7I7QFVNQ3GZVR5TCIWWTGG25

not attested not anchored not stored refs pending

Massive Black Hole binaries in gas-rich galaxy mergers; multiple regimes of orbital decay and interplay with gas inflows

KITP, Lucio Mayer (ITP, UC Santa Barbara), University of Zurich

arxiv:1308.0431 v1 · 2013-08-02 · 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{SP7I7QFVNQ3GZVR5TCIWWTGG25}

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	2026-05-18T01:48:24.826954Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93fe8fc0b56c366cd63d98916b4cc6d7619205696282776de97f67cf5eded845

Aliases

arxiv: 1308.0431 · arxiv_version: 1308.0431v1 · doi: 10.48550/arxiv.1308.0431 · pith_short_12: SP7I7QFVNQ3G · pith_short_16: SP7I7QFVNQ3GZVR5 · pith_short_8: SP7I7QFV

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/SP7I7QFVNQ3GZVR5TCIWWTGG25 \
  | 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: 93fe8fc0b56c366cd63d98916b4cc6d7619205696282776de97f67cf5eded845

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12a03a169176aca826c2153dc77619ff1a8cd077c5b6e677d410bfcd5978f9ac",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-08-02T08:07:03Z",
    "title_canon_sha256": "05fa38095530a4504c379e0520cea6638840993a731d16de7ca455d0cead664e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.0431",
    "kind": "arxiv",
    "version": 1
  }
}