Pith Number

pith:H6UM3VXR

pith:2004:H6UM3VXR4UAY2GWGTJSR3KNUT5

not attested not anchored not stored refs pending

The Crab Nebula's Wisps in Radio and Optical

D. A. Frail, J. J. Hester, M. F. Bietenholz, N. Bartel

arxiv:astro-ph/0408061 v2 · 2004-08-03 · 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{H6UM3VXR4UAY2GWGTJSR3KNUT5}

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	2026-07-04T16:44:25.982732Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3fa8cdd6f1e5018d1ac69a651da9b49f42f87b0849bcbb67274c7d62b201882a

Aliases

arxiv: astro-ph/0408061 · arxiv_version: astro-ph/0408061v2 · doi: 10.48550/arxiv.astro-ph/0408061 · pith_short_12: H6UM3VXR4UAY · pith_short_16: H6UM3VXR4UAY2GWG · pith_short_8: H6UM3VXR

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/H6UM3VXR4UAY2GWGTJSR3KNUT5 \
  | 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: 3fa8cdd6f1e5018d1ac69a651da9b49f42f87b0849bcbb67274c7d62b201882a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c6221db82438e33617b17fcc112e077b7df2d21bb278490cfd7fd837c681f3d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-03T17:10:28Z",
    "title_canon_sha256": "7aa7a927e581c01405b1ef2d9a2d4e7fec4c7af7834ebee6c636fdbdf1ab53e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0408061",
    "kind": "arxiv",
    "version": 2
  }
}