Pith Number

pith:TWMQZ6BJ

pith:2009:TWMQZ6BJ6HYUH2CMABKORXEFFU

not attested not anchored not stored refs pending

Evidence of a massive planet candidate orbiting the young active K5V star BD+20 1790

E. De Castro, G. Anglada-Escud\'e, J.R. Barnes, M.C. G\'alvez-Ortiz, M. Cornide, M. Hern\'an-Obispo, S.R. Kane

arxiv:0912.2773 v1 · 2009-12-14 · 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{TWMQZ6BJ6HYUH2CMABKORXEFFU}

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	2026-05-18T02:10:23.674880Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9d990cf829f1f143e84c0054e8dc852d14ecd86d3642bc49c4bec9a423d51b91

Aliases

arxiv: 0912.2773 · arxiv_version: 0912.2773v1 · doi: 10.48550/arxiv.0912.2773 · pith_short_12: TWMQZ6BJ6HYU · pith_short_16: TWMQZ6BJ6HYUH2CM · pith_short_8: TWMQZ6BJ

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/TWMQZ6BJ6HYUH2CMABKORXEFFU \
  | 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: 9d990cf829f1f143e84c0054e8dc852d14ecd86d3642bc49c4bec9a423d51b91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "22cb1d8745cfebd02b8c628e4d5b80fe53acf7bacb96bdcb8da97be6dd0e734e",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-12-14T23:14:15Z",
    "title_canon_sha256": "cf6fe901c8525c165aeec9e338c835e0e86a3b21b018f3087fbc7d9db71b5adb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.2773",
    "kind": "arxiv",
    "version": 1
  }
}