Pith Number

pith:FWEJIGHZ

pith:2008:FWEJIGHZEJ7AAUQIDMINB3GUP5

not attested not anchored not stored refs pending

Blandford-Znajek mechanism versus Penrose process

S. S. Komissarov

arxiv:0804.1912 v1 · 2008-04-11 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FWEJIGHZEJ7AAUQIDMINB3GUP5}

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	2026-05-18T04:37:23.031642Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2d889418f9227e0052081b10d0ecd47f6c5b73d864084bb0dd79d2b1e96b84a2

Aliases

arxiv: 0804.1912 · arxiv_version: 0804.1912v1 · doi: 10.48550/arxiv.0804.1912 · pith_short_12: FWEJIGHZEJ7A · pith_short_16: FWEJIGHZEJ7AAUQI · pith_short_8: FWEJIGHZ

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/FWEJIGHZEJ7AAUQIDMINB3GUP5 \
  | 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: 2d889418f9227e0052081b10d0ecd47f6c5b73d864084bb0dd79d2b1e96b84a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ef6cc2ad82f0cb3f9dc810c9c027e121b45422e6e93ef8196779b7dd516f65db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-11T19:10:07Z",
    "title_canon_sha256": "201ee4bcb9aed8c56803745c8b119ff5fd6c681ed353d0e161fe80cb0ab0bc31"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.1912",
    "kind": "arxiv",
    "version": 1
  }
}