Pith Number

pith:Z55U4GSV

pith:2009:Z55U4GSVEE6NOHTT5KENZQYQV7

not attested not anchored not stored refs pending

Stellar Astrophysics with a Dispersed Fourier Transform Spectrograph. I. Instrument Description and Orbits of Single-lined Spectroscopic Binaries

Andrew T. Cenko, Arsen R. Hajian, Bradford B. Behr, Jeff Meade, Marc Murison, Robert Hindsley, Robert S. McMillan

arxiv:0909.3241 v1 · 2009-09-17 · astro-ph.IM · 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{Z55U4GSVEE6NOHTT5KENZQYQV7}

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	2026-05-18T02:34:29.694978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cf7b4e1a55213cd71e73ea88dcc310afd889a0cbd023d20ae494a9fff895961c

Aliases

arxiv: 0909.3241 · arxiv_version: 0909.3241v1 · doi: 10.48550/arxiv.0909.3241 · pith_short_12: Z55U4GSVEE6N · pith_short_16: Z55U4GSVEE6NOHTT · pith_short_8: Z55U4GSV

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/Z55U4GSVEE6NOHTT5KENZQYQV7 \
  | 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: cf7b4e1a55213cd71e73ea88dcc310afd889a0cbd023d20ae494a9fff895961c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3e173b995e1cd007587508a363b7d24592be3a04c3de7a67a743d4a388fc073b",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-09-17T14:33:15Z",
    "title_canon_sha256": "69cde531235fc0cf600d51028c9f5cb3b1debe26120cd66837d42572b8d34b1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.3241",
    "kind": "arxiv",
    "version": 1
  }
}