Pith Number

pith:6HAI4P4Z

pith:1999:6HAI4P4ZWX5DAW4YMSM6ZXNLXZ

not attested not anchored not stored refs pending

Radio spectrum of the Crab nebula as an evidence for fast initial spin of its pulsar

A. M. Atoyan

arxiv:astro-ph/9905204 v1 · 1999-05-17 · 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{6HAI4P4ZWX5DAW4YMSM6ZXNLXZ}

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	2026-07-04T14:16:43.011218Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1c08e3f99b5fa305b986499ecddabbe78745400461cdb0198d9b3058040c97c

Aliases

arxiv: astro-ph/9905204 · arxiv_version: astro-ph/9905204v1 · doi: 10.48550/arxiv.astro-ph/9905204 · pith_short_12: 6HAI4P4ZWX5D · pith_short_16: 6HAI4P4ZWX5DAW4Y · pith_short_8: 6HAI4P4Z

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/6HAI4P4ZWX5DAW4YMSM6ZXNLXZ \
  | 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: f1c08e3f99b5fa305b986499ecddabbe78745400461cdb0198d9b3058040c97c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6f97fcf1b0d897d59219c98e39df25c9ba1436062bf0894131dd31e01762c706",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-05-17T12:35:05Z",
    "title_canon_sha256": "3d038921fb29d6fbaa6e5e299fc9e267a101892291f0adfb07988d393368e5c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9905204",
    "kind": "arxiv",
    "version": 1
  }
}