Pith Number

pith:4DYVFGG6

pith:2008:4DYVFGG64H5GTTQABFF67T4H4R

not attested not anchored not stored refs pending

Inspiralling Supermassive Black Holes: A New Signpost for Galaxy Mergers

Aaron A. Dutton, Alison L. Coil, Brian F. Gerke, David C. Koo, D.J. Rosario, Jeffrey A. Newman, Julia M. Comerford, Marc Davis, Michael C. Cooper, Renbin Yan, S.M. Faber

arxiv:0810.3235 v2 · 2008-10-19 · astro-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4DYVFGG64H5GTTQABFF67T4H4R}

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	2026-05-18T04:29:25.892984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0f15298dee1fa69ce00094befcf87e44cc57526771fffebc1fb4d112d194568

Aliases

arxiv: 0810.3235 · arxiv_version: 0810.3235v2 · doi: 10.48550/arxiv.0810.3235 · pith_short_12: 4DYVFGG64H5G · pith_short_16: 4DYVFGG64H5GTTQA · pith_short_8: 4DYVFGG6

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/4DYVFGG64H5GTTQABFF67T4H4R \
  | 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: e0f15298dee1fa69ce00094befcf87e44cc57526771fffebc1fb4d112d194568

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "09bb0988fef27cdcb1a1fb094c771a79f69683d09c7ee9ad9537ac0121ae7b62",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-10-19T18:06:44Z",
    "title_canon_sha256": "bff1e9e1db9b4a75eb30addc7bb81b038dfd32859cb062cb06b7b63c67b75ce8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0810.3235",
    "kind": "arxiv",
    "version": 2
  }
}