Pith Number

pith:BHCDJBFS

pith:2019:BHCDJBFSU6QEO6HIZFK4W3TFN5

not attested not anchored not stored refs pending

Observing Black Holes Spin

Christopher S. Reynolds

arxiv:1903.11704 v1 · 2019-03-27 · astro-ph.HE · astro-ph.GA · 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{BHCDJBFSU6QEO6HIZFK4W3TFN5}

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.

Cited by

1 paper in Pith

Black hole supercolliders

Receipt and verification

First computed	2026-05-17T23:50:01.976065Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

09c43484b2a7a04778e8c955cb6e656f5dc236df39838f7c142fcea39878ff92

Aliases

arxiv: 1903.11704 · arxiv_version: 1903.11704v1 · doi: 10.48550/arxiv.1903.11704 · pith_short_12: BHCDJBFSU6QE · pith_short_16: BHCDJBFSU6QEO6HI · pith_short_8: BHCDJBFS

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/BHCDJBFSU6QEO6HIZFK4W3TFN5 \
  | 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: 09c43484b2a7a04778e8c955cb6e656f5dc236df39838f7c142fcea39878ff92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bea25a3a9882ee6d0288a7d20e4be45a9bea0fa27393c33d9ba8fc2b68c56dbd",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-03-27T21:20:27Z",
    "title_canon_sha256": "7ad978d55141a0f624ef0b3caa8e51982d0e4915fd380bd07a0ef50ca5125c82"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.11704",
    "kind": "arxiv",
    "version": 1
  }
}