Pith Number

pith:ZAA4CGRU

pith:2001:ZAA4CGRUBIGZOLH3HKLCNDYNC6

not attested not anchored not stored refs pending

Galactic Mergers with Supermassive Black Holes

David Merritt (Rutgers University), Fidel Cruz

arxiv:astro-ph/0106358 v1 · 2001-06-20 · 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{ZAA4CGRUBIGZOLH3HKLCNDYNC6}

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	2026-07-04T14:11:19.505060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c801c11a340a0d972cfb3a96268f0d17b4ba86adfb908a0285abc9ee27f4dc46

Aliases

arxiv: astro-ph/0106358 · arxiv_version: astro-ph/0106358v1 · doi: 10.48550/arxiv.astro-ph/0106358 · pith_short_12: ZAA4CGRUBIGZ · pith_short_16: ZAA4CGRUBIGZOLH3 · pith_short_8: ZAA4CGRU

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/ZAA4CGRUBIGZOLH3HKLCNDYNC6 \
  | 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: c801c11a340a0d972cfb3a96268f0d17b4ba86adfb908a0285abc9ee27f4dc46

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "382bfee0ed2c80e6502e814ec768a018c75c2d8fbbd2f8499beee1c665f258d9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-06-20T14:21:19Z",
    "title_canon_sha256": "976e11b090b0fd173f755666b990e5319e27602e1c84e1d81bdd853cc9a4d4ad"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0106358",
    "kind": "arxiv",
    "version": 1
  }
}