Pith Number

pith:SWSMU3YB

pith:1997:SWSMU3YBQ5AJPFLOM5GRABYUTB

not attested not anchored not stored refs pending

DIRECT Distances to Nearby Galaxies Using Detached Eclipsing Binaries and Cepheids. I. Variables in the Field M31B

D. D. Sasselov (CfA), J. Kaluzny (Warsaw), J. L. Tonry (Hawaii), K. Z. Stanek, M. Krockenberger, M. Mateo (Michigan)

arxiv:astro-ph/9703124 v2 · 1997-03-19 · 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{SWSMU3YBQ5AJPFLOM5GRABYUTB}

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	2026-05-18T01:40:17.969356Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95a4ca6f01874097956e674d1007149852d4b71f5d91d6ea625d6e139edd99f6

Aliases

arxiv: astro-ph/9703124 · arxiv_version: astro-ph/9703124v2 · doi: 10.48550/arxiv.astro-ph/9703124 · pith_short_12: SWSMU3YBQ5AJ · pith_short_16: SWSMU3YBQ5AJPFLO · pith_short_8: SWSMU3YB

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/SWSMU3YBQ5AJPFLOM5GRABYUTB \
  | 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: 95a4ca6f01874097956e674d1007149852d4b71f5d91d6ea625d6e139edd99f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "498e17f6a7e82ca3aef778405af35dca536e19c1fc5d75a71b6ac35d163de0ec",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-03-19T23:38:54Z",
    "title_canon_sha256": "a9284eb45cac79008ac35a2219d5c4d6666370a31a43d3cf8c655f9098c28b75"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9703124",
    "kind": "arxiv",
    "version": 2
  }
}