Pith Number

pith:2LE3JAGU

pith:2018:2LE3JAGUPGPKAOQN43G6AQDHTW

not attested not anchored not stored refs pending

Unravelling the progenitors of merging black hole binaries

Mario Spera, Michela Mapelli, Nicola Giacobbo

arxiv:1807.07568 v1 · 2018-07-19 · astro-ph.HE · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2LE3JAGUPGPKAOQN43G6AQDHTW}

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	2026-05-18T00:10:16.187223Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2c9b480d4799ea03a0de6cde040679da8dc9683e7058355d037cdf459352898

Aliases

arxiv: 1807.07568 · arxiv_version: 1807.07568v1 · doi: 10.48550/arxiv.1807.07568 · pith_short_12: 2LE3JAGUPGPK · pith_short_16: 2LE3JAGUPGPKAOQN · pith_short_8: 2LE3JAGU

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/2LE3JAGUPGPKAOQN43G6AQDHTW \
  | 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: d2c9b480d4799ea03a0de6cde040679da8dc9683e7058355d037cdf459352898

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b1cf03219afebb04853c6573e8845dffedd7633f92e293ed21f961e190e0456a",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-07-19T12:32:52Z",
    "title_canon_sha256": "db8c09426db0d6a1e813563d21c6b20c1bbc569fa32c9e2ba74f4634d470c6e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07568",
    "kind": "arxiv",
    "version": 1
  }
}