Pith Number

pith:OUGGH3LI

pith:2008:OUGGH3LIJEWASXD23RYGYS5UOQ

not attested not anchored not stored refs pending

A recoiling supermassive black hole in the quasar SDSSJ092712.65+294344.0?

H. Lu (MPE), H. Zhou, S. Komossa

arxiv:0804.4585 v1 · 2008-04-29 · 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{OUGGH3LIJEWASXD23RYGYS5UOQ}

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	2026-05-18T04:36:41.274124Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

750c63ed68492c095c7adc706c4bb474100f4397d336ded037f1da8349136b9e

Aliases

arxiv: 0804.4585 · arxiv_version: 0804.4585v1 · doi: 10.48550/arxiv.0804.4585 · pith_short_12: OUGGH3LIJEWA · pith_short_16: OUGGH3LIJEWASXD2 · pith_short_8: OUGGH3LI

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/OUGGH3LIJEWASXD23RYGYS5UOQ \
  | 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: 750c63ed68492c095c7adc706c4bb474100f4397d336ded037f1da8349136b9e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d8be12eb1195e2e7bdc36b1fe86e0a9d7f685b574897f21b4c662ee4be542c37",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-29T11:41:01Z",
    "title_canon_sha256": "05c8212670d551fccd49845d313d6abcf2044350006878456b2aa78f92641203"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.4585",
    "kind": "arxiv",
    "version": 1
  }
}