Pith Number

pith:XACJWZJK

pith:2009:XACJWZJKTBE7X34JPWYHQ7ABV2

not attested not anchored not stored refs pending

Discovery of the 1.80 hr Spin Period of the White Dwarf of the Symbiotic System BF Cyg

Astronomy, Elia M. Leibowitz (The School of Physics, Israel), Liliana Formiggini, Tel Aviv University

arxiv:0903.5157 v1 · 2009-03-30 · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XACJWZJKTBE7X34JPWYHQ7ABV2}

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	2026-05-18T02:14:18.636039Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8049b652a9849fbef897db0787c01aea1cecf7eeece35c16f76b0dcb53e8ac3

Aliases

arxiv: 0903.5157 · arxiv_version: 0903.5157v1 · doi: 10.48550/arxiv.0903.5157 · pith_short_12: XACJWZJKTBE7 · pith_short_16: XACJWZJKTBE7X34J · pith_short_8: XACJWZJK

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/XACJWZJKTBE7X34JPWYHQ7ABV2 \
  | 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: b8049b652a9849fbef897db0787c01aea1cecf7eeece35c16f76b0dcb53e8ac3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c9d8ae632215cab5cf861bdc302ce5cac8b9fb63a244fb7ca6908c9bebd2775",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-03-30T10:01:58Z",
    "title_canon_sha256": "579910dc2de2fecd37d938f3d16e8e5c66414d2b17e258c87c42ac99bd67735f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0903.5157",
    "kind": "arxiv",
    "version": 1
  }
}