Pith Number

pith:BF4SLDUT

pith:1999:BF4SLDUTL4DCP67QYMOW3SZ6GR

not attested not anchored not stored refs pending

The Radial Structure of the Cygnus Loop Supernova Remnant --- Possible evidence of a cavity explosion ---

Emi Miyata, Hiroshi Tsunemi

arxiv:astro-ph/9905143 v1 · 1999-05-12 · 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{BF4SLDUTL4DCP67QYMOW3SZ6GR}

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	2026-07-04T16:11:12.237003Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0979258e935f0627fbf0c31d6dcb3e347c58b7f6d2a2f6599207e1d08d84d85f

Aliases

arxiv: astro-ph/9905143 · arxiv_version: astro-ph/9905143v1 · doi: 10.48550/arxiv.astro-ph/9905143 · pith_short_12: BF4SLDUTL4DC · pith_short_16: BF4SLDUTL4DCP67Q · pith_short_8: BF4SLDUT

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/BF4SLDUTL4DCP67QYMOW3SZ6GR \
  | 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: 0979258e935f0627fbf0c31d6dcb3e347c58b7f6d2a2f6599207e1d08d84d85f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5f11233b19c1f475f08b48d1aa6f5dfd6e3a5777493fdc3076b9beddfb60f7d8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-05-12T15:12:20Z",
    "title_canon_sha256": "9167bb661269f82e5b1f8f0f0d9ab1fae424e4c2abda5c16b45acef41baf111a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9905143",
    "kind": "arxiv",
    "version": 1
  }
}