Pith Number

pith:HSZXTD5Q

pith:1999:HSZXTD5Q3GKWZ2K3H5OHHUGX2P

not attested not anchored not stored refs pending

Black Hole Emergence in Supernovae

2), (2) UIUC Astronomy, 3) ((1) UIUC Physics, (3) Padova), Luca Zampieri (1, NCSA, Shmuel Balberg (1), Stuart L. Shapiro (1

arxiv:astro-ph/9912101 v1 · 1999-12-06 · astro-ph · 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{HSZXTD5Q3GKWZ2K3H5OHHUGX2P}

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	2026-05-18T01:40:12.337831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3cb3798fb0d9956ce95b3f5c73d0d7d3ceb05ee643976d43fa602515aeb366c8

Aliases

arxiv: astro-ph/9912101 · arxiv_version: astro-ph/9912101v1 · doi: 10.48550/arxiv.astro-ph/9912101 · pith_short_12: HSZXTD5Q3GKW · pith_short_16: HSZXTD5Q3GKWZ2K3 · pith_short_8: HSZXTD5Q

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/HSZXTD5Q3GKWZ2K3H5OHHUGX2P \
  | 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: 3cb3798fb0d9956ce95b3f5c73d0d7d3ceb05ee643976d43fa602515aeb366c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "063783c7dcb25055ab96855e720f55eafeeb98faac77c36a8b0a00460244c6e9",
    "cross_cats_sorted": [
      "gr-qc"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-06T17:45:27Z",
    "title_canon_sha256": "4c45c7594e199707965ca105a106063d8d95ba8fe81019189202594016f33cfe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912101",
    "kind": "arxiv",
    "version": 1
  }
}