Pith Number

pith:M4F6YJKG

pith:2005:M4F6YJKG46ZSJCURYZSKZ7B34A

not attested not anchored not stored refs pending

Evolution of the 0.01 - 25 Hz power spectral components in Cygnus X-1

L. Borgonovo, M. Axelsson, S. Larsson (Stockholm Observatory)

arxiv:astro-ph/0504446 v1 · 2005-04-20 · 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{M4F6YJKG46ZSJCURYZSKZ7B34A}

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	2026-07-04T14:14:09.009960Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

670bec2546e7b3248a91c664acfc3be005db99dcb75a51e230bdc6dd46dfb4cf

Aliases

arxiv: astro-ph/0504446 · arxiv_version: astro-ph/0504446v1 · doi: 10.48550/arxiv.astro-ph/0504446 · pith_short_12: M4F6YJKG46ZS · pith_short_16: M4F6YJKG46ZSJCUR · pith_short_8: M4F6YJKG

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/M4F6YJKG46ZSJCURYZSKZ7B34A \
  | 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: 670bec2546e7b3248a91c664acfc3be005db99dcb75a51e230bdc6dd46dfb4cf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8c30443ae219f0caedcdb6fdd94395737ecf4ac8c4e34c8fc0f8b1db37992525",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-04-20T16:58:54Z",
    "title_canon_sha256": "e705dc8656532724a1a7c0417e0845295adb26964e71f4b85904e5076f603a28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0504446",
    "kind": "arxiv",
    "version": 1
  }
}