Pith Number

pith:2P6DDABE

pith:2025:2P6DDABE4WZFVG6B2XRIPBRXFO

not attested not anchored not stored refs pending

The black hole - pair instability boundary for high stellar rotation

Erin R. Higgins, Ethan R. J. Winch, Gautham N. Sabhahit, Jorick S. Vink

arxiv:2504.17009 v1 · 2025-04-23 · astro-ph.SR · 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{2P6DDABE4WZFVG6B2XRIPBRXFO}

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	2026-07-05T10:53:20.523750Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3fc318024e5b25a9bc1d5e28786372ba91276f6135202af077bf1e480b2abbd

Aliases

arxiv: 2504.17009 · arxiv_version: 2504.17009v1 · doi: 10.48550/arxiv.2504.17009 · pith_short_12: 2P6DDABE4WZF · pith_short_16: 2P6DDABE4WZFVG6B · pith_short_8: 2P6DDABE

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/2P6DDABE4WZFVG6B2XRIPBRXFO \
  | 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: d3fc318024e5b25a9bc1d5e28786372ba91276f6135202af077bf1e480b2abbd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bf3a7e50ac42330f14abe3541de07a6228a8d07f753e23edfce95fe7ef824c2",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-04-23T18:00:15Z",
    "title_canon_sha256": "3a0b74ba19fc992edf4c5f9b9d0bf434413605a92a3e2c72ccc9019aac2eed7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2504.17009",
    "kind": "arxiv",
    "version": 1
  }
}