Pith Number

pith:XCDO3BCV

pith:2022:XCDO3BCVE5DAMOD26VL7GMSAGF

not attested not anchored not stored refs pending

Direct collapse of exceptionally heavy black holes in the merger-driven scenario

Lionel Haemmerl\'e, Lorenz Zwick, Lucio Mayer, Ralf S. Klessen

arxiv:2209.02358 v2 · 2022-09-06 · 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{XCDO3BCVE5DAMOD26VL7GMSAGF}

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	2026-07-05T05:29:54.128336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b886ed8455274606387af557f33240314b5eb232492c93954e5a406cecfecfce

Aliases

arxiv: 2209.02358 · arxiv_version: 2209.02358v2 · doi: 10.48550/arxiv.2209.02358 · pith_short_12: XCDO3BCVE5DA · pith_short_16: XCDO3BCVE5DAMOD2 · pith_short_8: XCDO3BCV

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/XCDO3BCVE5DAMOD26VL7GMSAGF \
  | 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: b886ed8455274606387af557f33240314b5eb232492c93954e5a406cecfecfce

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d44ad524b905a021c3bca96593d97744d945741fbb10b06e130e78755775f13",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2022-09-06T10:39:55Z",
    "title_canon_sha256": "5e2a0444d9f0c096faa889a41ac47c902d32965952ec81517a19a3a40167329e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2209.02358",
    "kind": "arxiv",
    "version": 2
  }
}