Pith Number

pith:Y36JIMZI

pith:2004:Y36JIMZI3YEGFF6TAV6KFAZV2C

not attested not anchored not stored refs pending

Radio and X-ray Observations of PSR B0540-69

F. E. Marshall, R. W. Romani, Simon Johnston, W. Zhang

arxiv:astro-ph/0408171 v1 · 2004-08-10 · 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{Y36JIMZI3YEGFF6TAV6KFAZV2C}

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	2026-07-04T16:44:27.883733Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c6fc943328de086297d3057ca28335d08b19bd4b2e94a853ca19e2a83a1fb506

Aliases

arxiv: astro-ph/0408171 · arxiv_version: astro-ph/0408171v1 · doi: 10.48550/arxiv.astro-ph/0408171 · pith_short_12: Y36JIMZI3YEG · pith_short_16: Y36JIMZI3YEGFF6T · pith_short_8: Y36JIMZI

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/Y36JIMZI3YEGFF6TAV6KFAZV2C \
  | 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: c6fc943328de086297d3057ca28335d08b19bd4b2e94a853ca19e2a83a1fb506

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ba040f486eedfb0b20d6fdc6f36fc9470e2e4012cc42e46aafd625871ae9e2b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2004-08-10T02:32:39Z",
    "title_canon_sha256": "8ab905524c8d0764e8968f02d8ce67372269fa980073f1d655df41789d380029"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0408171",
    "kind": "arxiv",
    "version": 1
  }
}