Pith Number

pith:XRRY63Y7

pith:2012:XRRY63Y77VSV5AFWQOSKMJR3QO

not attested not anchored not stored refs pending

Solution to the Sigma-Problem of Pulsar Wind Nebulae

Oliver Porth, Rony Keppens, Serguei S. Komissarov

arxiv:1212.1382 v1 · 2012-12-06 · 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{XRRY63Y77VSV5AFWQOSKMJR3QO}

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	2026-05-18T01:52:46.928683Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc638f6f1ffd655e80b683a4a6263b83a2d1b41a5555fc8ecd42b12a33c71978

Aliases

arxiv: 1212.1382 · arxiv_version: 1212.1382v1 · doi: 10.48550/arxiv.1212.1382 · pith_short_12: XRRY63Y77VSV · pith_short_16: XRRY63Y77VSV5AFW · pith_short_8: XRRY63Y7

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/XRRY63Y77VSV5AFWQOSKMJR3QO \
  | 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: bc638f6f1ffd655e80b683a4a6263b83a2d1b41a5555fc8ecd42b12a33c71978

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7f8ed8ff6ef7e44c7a50022895321bf3d356ca6a9007793b88b6718e015e318",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-12-06T17:17:34Z",
    "title_canon_sha256": "a0d5c3f5ab942249647b44c3c2379010888d5bbca607eb92db637193909bfb75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.1382",
    "kind": "arxiv",
    "version": 1
  }
}