Pith Number

pith:4DGK2KG2

pith:2005:4DGK2KG2XBBQ5CVNCFHOMJBDO5

not attested not anchored not stored refs pending

Search for a Shock Wave around the Crab Nebula

C. W. Mauche, P. Gorenstein (Harvard-Smithsonian Center for Astrophysics)

arxiv:astro-ph/0509769 v1 · 2005-09-26 · 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{4DGK2KG2XBBQ5CVNCFHOMJBDO5}

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	2026-05-18T02:40:25.539616Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e0ccad28dab8430e8aad114ee62423776496e3ea1ad78826303c6fe4846d07f7

Aliases

arxiv: astro-ph/0509769 · arxiv_version: astro-ph/0509769v1 · doi: 10.48550/arxiv.astro-ph/0509769 · pith_short_12: 4DGK2KG2XBBQ · pith_short_16: 4DGK2KG2XBBQ5CVN · pith_short_8: 4DGK2KG2

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/4DGK2KG2XBBQ5CVNCFHOMJBDO5 \
  | 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: e0ccad28dab8430e8aad114ee62423776496e3ea1ad78826303c6fe4846d07f7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0892913da3b34e13eab1fa8c6c4cc3d94522b71db37e81d0839eab82f7f4bcb5",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-26T19:28:53Z",
    "title_canon_sha256": "06fe7f65e839de4b898c1849d44797a42000b3ca0e2cd6a368b1096a036f522e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509769",
    "kind": "arxiv",
    "version": 1
  }
}