Pith Number

pith:JEMGIR27

pith:2020:JEMGIR27LZCC2OT6QFBITNDV6W

not attested not anchored not stored refs pending

A self-lensing supermassive binary black hole at radio frequencies: the story of Spikey continues

Emma Kun, Krisztina \'E. Gab\'anyi, S\'andor Frey

arxiv:2006.08441 v1 · 2020-06-15 · 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{JEMGIR27LZCC2OT6QFBITNDV6W}

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	2026-07-05T01:16:15.890786Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

491864475f5e442d3a7e814289b475f5b359f14dff733834bc033572f11665f0

Aliases

arxiv: 2006.08441 · arxiv_version: 2006.08441v1 · doi: 10.48550/arxiv.2006.08441 · pith_short_12: JEMGIR27LZCC · pith_short_16: JEMGIR27LZCC2OT6 · pith_short_8: JEMGIR27

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/JEMGIR27LZCC2OT6QFBITNDV6W \
  | 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: 491864475f5e442d3a7e814289b475f5b359f14dff733834bc033572f11665f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33ac504a7ed72535c8a6878f6a81dc916e0ece2ffe6c8af1f2146acae1156067",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2020-06-15T14:39:17Z",
    "title_canon_sha256": "9d956fb282f0e369c7b1e93f5b91b5a140a1d237c0db8f21ce852876860dda83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.08441",
    "kind": "arxiv",
    "version": 1
  }
}