Pith Number

pith:VAB256T4

pith:2012:VAB256T4QBWGMPON33OVUGB6SD

not attested not anchored not stored refs pending

Constraints on the Nature of CID-42: Recoil Kick or Supermassive Black Hole Pair?

Abraham Loeb, Francesca Civano, Laura Blecha, Martin Elvis

arxiv:1205.6202 v3 · 2012-05-28 · astro-ph.CO

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VAB256T4QBWGMPON33OVUGB6SD}

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	2026-05-18T01:57:16.465594Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a803aefa7c806c663dcddedd5a183e90f1cc1d3fe149b1863cc490f14b572cfd

Aliases

arxiv: 1205.6202 · arxiv_version: 1205.6202v3 · doi: 10.48550/arxiv.1205.6202 · pith_short_12: VAB256T4QBWG · pith_short_16: VAB256T4QBWGMPON · pith_short_8: VAB256T4

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/VAB256T4QBWGMPON33OVUGB6SD \
  | 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: a803aefa7c806c663dcddedd5a183e90f1cc1d3fe149b1863cc490f14b572cfd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "423509a9506b7dd9cd7966c290828364cc951a561c76bb96e24e3d79a2b8ed87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-05-28T20:00:00Z",
    "title_canon_sha256": "cbfeb8850952a82461a073663687a0b9dbf474918854f6109c26ffa450d3d1e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1205.6202",
    "kind": "arxiv",
    "version": 3
  }
}