Pith Number

pith:K7QF2CYX

pith:2018:K7QF2CYXN3GGTGGUZCMGABPSM6

not attested not anchored not stored refs pending

Wide nutation: binary black-hole spins repeatedly oscillating from full alignment to full anti-alignment

Alicia Lima, Davide Gerosa, Emanuele Berti, Michael Kesden, Richard O'Shaughnessy, Ulrich Sperhake

arxiv:1811.05979 v2 · 2018-11-14 · gr-qc · astro-ph.GA · 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{K7QF2CYXN3GGTGGUZCMGABPSM6}

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	2026-05-17T23:48:39.881762Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57e05d0b176ecc6998d4c8986005f2679e11d44eedfa510836c7d1d02a244575

Aliases

arxiv: 1811.05979 · arxiv_version: 1811.05979v2 · doi: 10.48550/arxiv.1811.05979 · pith_short_12: K7QF2CYXN3GG · pith_short_16: K7QF2CYXN3GGTGGU · pith_short_8: K7QF2CYX

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/K7QF2CYXN3GGTGGUZCMGABPSM6 \
  | 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: 57e05d0b176ecc6998d4c8986005f2679e11d44eedfa510836c7d1d02a244575

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7b6265412101f1cf60d999314dc47cc5f210b0fc9ccff0de315a563173714d0",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2018-11-14T19:00:02Z",
    "title_canon_sha256": "b3267d0bb53ba171556f060f030046f4257682a1a49ed0e7d518269ded5b6d6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.05979",
    "kind": "arxiv",
    "version": 2
  }
}