Pith Number

pith:KK5B6IZN

pith:2020:KK5B6IZN2YZHKHG6F2AM4B7GCY

not attested not anchored not stored refs pending

Finding Direct-Collapse Black Holes at Birth

Bodo L. Ziegler, Carla Bernhardt, Daniel J. Whalen, Erik Zackrisson, Fabio Pacucci, Marco Surace, Michaela Hirschmann

arxiv:2005.03018 v2 · 2020-05-06 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{KK5B6IZN2YZHKHG6F2AM4B7GCY}

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	2026-07-05T01:19:04.067925Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

52ba1f232dd632751cde2e80ce07e616203803bd994cb4823dadbde3034572bc

Aliases

arxiv: 2005.03018 · arxiv_version: 2005.03018v2 · doi: 10.48550/arxiv.2005.03018 · pith_short_12: KK5B6IZN2YZH · pith_short_16: KK5B6IZN2YZHKHG6 · pith_short_8: KK5B6IZN

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/KK5B6IZN2YZHKHG6F2AM4B7GCY \
  | 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: 52ba1f232dd632751cde2e80ce07e616203803bd994cb4823dadbde3034572bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cc1660bf0135455f3f39441469019fe113b35e2286016f127c427780cd31f6c0",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-05-06T18:00:00Z",
    "title_canon_sha256": "68a044b1169f34993670f17281b98388e772b0f8e41b41ee4fba63e31f64c2f4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.03018",
    "kind": "arxiv",
    "version": 2
  }
}