Pith Number

pith:O44FO4D3

pith:2007:O44FO4D334WLWPXD2EAVXGELRD

not attested not anchored not stored refs pending

Observable Signatures of a Black Hole Ejected by Gravitational Radiation Recoil in a Galaxy Merger

Abraham Loeb (Harvard)

arxiv:astro-ph/0703722 v2 · 2007-03-28 · astro-ph · gr-qc · hep-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{O44FO4D334WLWPXD2EAVXGELRD}

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	2026-07-04T15:18:48.549396Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

773857707bdf2cbb3ee3d1015b988b88e1c67b8fbececd7b0565d1d3af648bfa

Aliases

arxiv: astro-ph/0703722 · arxiv_version: astro-ph/0703722v2 · doi: 10.48550/arxiv.astro-ph/0703722 · pith_short_12: O44FO4D334WL · pith_short_16: O44FO4D334WLWPXD · pith_short_8: O44FO4D3

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/O44FO4D334WLWPXD2EAVXGELRD \
  | 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: 773857707bdf2cbb3ee3d1015b988b88e1c67b8fbececd7b0565d1d3af648bfa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "46f74f54c2fe33ac8982228de1b110d300eeef3fbb768da38fdb7fb61654e86a",
    "cross_cats_sorted": [
      "gr-qc",
      "hep-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-03-28T14:05:19Z",
    "title_canon_sha256": "f3455ad350e1df3962b637adfa15c112acc8e162dc45767462642d36d178a59a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0703722",
    "kind": "arxiv",
    "version": 2
  }
}