Pith Number

pith:CRJ4NHD4

pith:2007:CRJ4NHD4LCP5GJL6BCSPJ2F7JN

not attested not anchored not stored refs pending

HST multi-epoch imaging of the PSR B0540-69 system unveils a highly dynamic synchrotron nebula

A. De Luca, G.F. Bignami, P.A. Caraveo, R.P. Mignani

arxiv:0708.0290 v1 · 2007-08-02 · 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{CRJ4NHD4LCP5GJL6BCSPJ2F7JN}

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	2026-07-04T17:05:01.509887Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1453c69c7c589fd3257e08a4f4e8bf4b6c76ff4e7044da99a9cb20428b0c50b9

Aliases

arxiv: 0708.0290 · arxiv_version: 0708.0290v1 · doi: 10.48550/arxiv.0708.0290 · pith_short_12: CRJ4NHD4LCP5 · pith_short_16: CRJ4NHD4LCP5GJL6 · pith_short_8: CRJ4NHD4

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/CRJ4NHD4LCP5GJL6BCSPJ2F7JN \
  | 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: 1453c69c7c589fd3257e08a4f4e8bf4b6c76ff4e7044da99a9cb20428b0c50b9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7e4dc80ef85852021aa3037782e2ee485283d8e2a9e66ba5f48d8579585b07db",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-08-02T07:56:21Z",
    "title_canon_sha256": "7af0cb41c278ed1b29f4dacd0666138c87a43cff06e97f2204b9bfff9f0b253f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0708.0290",
    "kind": "arxiv",
    "version": 1
  }
}