Pith Number

pith:7WDQWB66

pith:2022:7WDQWB66BQD3U6BHBMO6XNTNL7

not attested not anchored not stored refs pending

The $\chi_\mathrm{eff}-z$ correlation of field binary black hole mergers and how 3G gravitational-wave detectors can constrain it

Emmanouil Zapartas, Maya Fishbach, Michael Zevin, Simone S. Bavera, Tassos Fragos

arxiv:2204.02619 v2 · 2022-04-06 · astro-ph.HE · astro-ph.CO · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7WDQWB66BQD3U6BHBMO6XNTNL7}

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	2026-07-05T04:57:07.012345Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fd870b07de0c07ba78270b1debb66d5fd0575dd5db2c91f60dba00b64f25cde8

Aliases

arxiv: 2204.02619 · arxiv_version: 2204.02619v2 · doi: 10.48550/arxiv.2204.02619 · pith_short_12: 7WDQWB66BQD3 · pith_short_16: 7WDQWB66BQD3U6BH · pith_short_8: 7WDQWB66

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/7WDQWB66BQD3U6BHBMO6XNTNL7 \
  | 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: fd870b07de0c07ba78270b1debb66d5fd0575dd5db2c91f60dba00b64f25cde8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6821ce4730bd8dde3d874fa77f5a370c19eb6e24b64994d0c67c1494b404f90",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2022-04-06T07:02:28Z",
    "title_canon_sha256": "c740a02aab5a9e3f76a830a24b030e99d7ddf5956eb3763afddbf5f6c5095091"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.02619",
    "kind": "arxiv",
    "version": 2
  }
}