Pith Number

pith:XXY4IKFV

pith:2009:XXY4IKFVRVHIOOH57QCGC3BS7A

not attested not anchored not stored refs pending

Spectroscopic binaries among Hipparcos M giants II. Binary frequency

A. Frankowski, A. Jorissen, B. Famaey, M. Mayor, S. Udry, S. Van Eck

arxiv:0901.0937 v2 · 2009-01-08 · 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{XXY4IKFVRVHIOOH57QCGC3BS7A}

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	2026-05-18T02:15:03.013134Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdf1c428b58d4e8738fdfc04616c32f83793a81d47ec587482e744d58554ee3f

Aliases

arxiv: 0901.0937 · arxiv_version: 0901.0937v2 · doi: 10.48550/arxiv.0901.0937 · pith_short_12: XXY4IKFVRVHI · pith_short_16: XXY4IKFVRVHIOOH5 · pith_short_8: XXY4IKFV

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/XXY4IKFVRVHIOOH57QCGC3BS7A \
  | 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: bdf1c428b58d4e8738fdfc04616c32f83793a81d47ec587482e744d58554ee3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f422c62730a0357b5ee7643dc441657d1068a065a9883fb6de1e62a174e5dbd7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-01-08T14:14:54Z",
    "title_canon_sha256": "1199e292e07400cdc431e2e8f0620809c164f8c71e3f6bc0b3425fc019025f86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.0937",
    "kind": "arxiv",
    "version": 2
  }
}