Pith Number

pith:QK2HMF5N

pith:2009:QK2HMF5NCFJUOVZ2HUDDY6SJ4P

not attested not anchored not stored refs pending

AGN pairs: chance superpositions or black hole binaries?

M. Dotti, M. Ruszkowski

arxiv:0912.5301 v1 · 2009-12-29 · 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{QK2HMF5NCFJUOVZ2HUDDY6SJ4P}

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	2026-05-18T02:10:13.307899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

82b47617ad115347573a3d063c7a49e3f8ed10b8aa84b6b4e6b1b1062050f64b

Aliases

arxiv: 0912.5301 · arxiv_version: 0912.5301v1 · doi: 10.48550/arxiv.0912.5301 · pith_short_12: QK2HMF5NCFJU · pith_short_16: QK2HMF5NCFJUOVZ2 · pith_short_8: QK2HMF5N

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/QK2HMF5NCFJUOVZ2HUDDY6SJ4P \
  | 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: 82b47617ad115347573a3d063c7a49e3f8ed10b8aa84b6b4e6b1b1062050f64b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "89506e7a658e0689ff22a93c1476c27ebc9b52d9dd0a3a6c73cfb1fb8ec1a31f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2009-12-29T13:08:45Z",
    "title_canon_sha256": "f49f3b48af33f4fef9f24f2267e589e0e2bd5438da469691fb428022dbcd2176"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.5301",
    "kind": "arxiv",
    "version": 1
  }
}