Pith Number

pith:HWKPR7BP

pith:2011:HWKPR7BPXNRXJRAN5PSTH4GXJF

not attested not anchored not stored refs pending

Radial Velocity Survey of Low-Mass Companions to sdB Stars

L. Classen, S. Geier, S.J. O'Toole, U. Heber

arxiv:1102.0511 v1 · 2011-02-02 · astro-ph.EP · 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{HWKPR7BPXNRXJRAN5PSTH4GXJF}

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	2026-05-18T04:25:10.799783Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d94f8fc2fbb6374c40debe533f0d74974422236ef34f2c097d3e3aa4e3c888d

Aliases

arxiv: 1102.0511 · arxiv_version: 1102.0511v1 · doi: 10.48550/arxiv.1102.0511 · pith_short_12: HWKPR7BPXNRX · pith_short_16: HWKPR7BPXNRXJRAN · pith_short_8: HWKPR7BP

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/HWKPR7BPXNRXJRAN5PSTH4GXJF \
  | 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: 3d94f8fc2fbb6374c40debe533f0d74974422236ef34f2c097d3e3aa4e3c888d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af8163382f9bf8a6073dd781428c92be8406c729f295d22daaac62d84ee03512",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-02-02T17:32:35Z",
    "title_canon_sha256": "4cedc3fe387dc750aeaad73f77cd59c9c0e376026d051ac421483829d63242c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.0511",
    "kind": "arxiv",
    "version": 1
  }
}