Pith Number

pith:BSZTIEKC

pith:2011:BSZTIEKC7MPKKIS5CGOIDKGKEZ

not attested not anchored not stored refs pending

Formation of galactic nuclei with multiple supermassive black holes at high redshifts

Abraham Loeb, Girish Kulkarni

arxiv:1107.0517 v1 · 2011-07-04 · astro-ph.CO · 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{BSZTIEKC7MPKKIS5CGOIDKGKEZ}

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	2026-05-18T02:01:25.394070Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0cb3341142fb1ea5225d119c81a8ca266f35b94192ba4cc3d4496a9483836f67

Aliases

arxiv: 1107.0517 · arxiv_version: 1107.0517v1 · doi: 10.48550/arxiv.1107.0517 · pith_short_12: BSZTIEKC7MPK · pith_short_16: BSZTIEKC7MPKKIS5 · pith_short_8: BSZTIEKC

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/BSZTIEKC7MPKKIS5CGOIDKGKEZ \
  | 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: 0cb3341142fb1ea5225d119c81a8ca266f35b94192ba4cc3d4496a9483836f67

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2bd550e6c9b9453a985ab5c2e3c28d29e0ba3bd239f88c10a0f431f422a7db37",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/3.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-07-04T02:35:43Z",
    "title_canon_sha256": "70e2814614ab37d90d283279d118e8c7c63d4d8014954452c9c907647086e830"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.0517",
    "kind": "arxiv",
    "version": 1
  }
}