Pith Number

pith:URCURRAB

pith:2005:URCURRABESB27O2AF4AOGOUIBS

not attested not anchored not stored refs pending

Long Term Variability of Cygnus X-1. IV. Spectral Evolution 1999-2004

(2) MIT-CXC, (3) CASS-UCSD, (4) MRAO Cambridge, (5) IAA Tuebingen), G. G. Pooley (4), J. Wilms (1), K. Pottschmidt (3), M. A. Nowak (2), S. Fritz (5) ((1) Warwick

arxiv:astro-ph/0510193 v2 · 2005-10-06 · 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{URCURRABESB27O2AF4AOGOUIBS}

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	2026-07-04T16:52:57.003529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a44548c4012483afbb402f00e33a880ca5d0e094b7815f421f42c14a310a3b2c

Aliases

arxiv: astro-ph/0510193 · arxiv_version: astro-ph/0510193v2 · doi: 10.48550/arxiv.astro-ph/0510193 · pith_short_12: URCURRABESB2 · pith_short_16: URCURRABESB27O2A · pith_short_8: URCURRAB

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/URCURRABESB27O2AF4AOGOUIBS \
  | 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: a44548c4012483afbb402f00e33a880ca5d0e094b7815f421f42c14a310a3b2c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9766776567bb7d362b438535da6abb890084be0bc347729d0fef5b2f13b25b23",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-10-06T19:51:17Z",
    "title_canon_sha256": "15dd1657e7fc945b162f810fa24a4c895ecf80b60447db0ba10355d0a96fa23e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0510193",
    "kind": "arxiv",
    "version": 2
  }
}