Pith Number

pith:X7MLEQ5T

pith:2009:X7MLEQ5TZI2QF3ZNGIYXH36H73

not attested not anchored not stored refs pending

A Metric and Optimisation Scheme for Microlens Planet Searches

Colin Snodgrass, Keith Horne, Yianni Tsapras

arxiv:0901.0846 v1 · 2009-01-07 · astro-ph.EP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{X7MLEQ5TZI2QF3ZNGIYXH36H73}

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	2026-05-18T02:15:03.118546Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bfd8b243b3ca3502ef2d323173efc7fece1ab77e9077eaa4c15b2d28e058e427

Aliases

arxiv: 0901.0846 · arxiv_version: 0901.0846v1 · doi: 10.48550/arxiv.0901.0846 · pith_short_12: X7MLEQ5TZI2Q · pith_short_16: X7MLEQ5TZI2QF3ZN · pith_short_8: X7MLEQ5T

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/X7MLEQ5TZI2QF3ZNGIYXH36H73 \
  | 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: bfd8b243b3ca3502ef2d323173efc7fece1ab77e9077eaa4c15b2d28e058e427

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "762faf5899e1a771465c14e8bb36bf6bf846d3d2a30874559f8c2f7555c819ea",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-01-07T16:00:35Z",
    "title_canon_sha256": "40f8fd6697d993e382cc4751d26d1d1b11aecc9315513e1a261ee4c7a6bf9d8d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.0846",
    "kind": "arxiv",
    "version": 1
  }
}