Pith Number

pith:MFI4EHBU

pith:2011:MFI4EHBUPO57U4DPPGENS4BXWS

not attested not anchored not stored refs pending

Project Icarus: Astronomical Considerations Relating to the Choice of Target Star

I. A. Crawford

arxiv:1106.0850 v1 · 2011-06-04 · astro-ph.GA · 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{MFI4EHBUPO57U4DPPGENS4BXWS}

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	2026-05-18T04:20:37.304161Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6151c21c347bbbfa706f7988d97037b49645d2b2b13b93bd808a1329c50bc3fe

Aliases

arxiv: 1106.0850 · arxiv_version: 1106.0850v1 · doi: 10.48550/arxiv.1106.0850 · pith_short_12: MFI4EHBUPO57 · pith_short_16: MFI4EHBUPO57U4DP · pith_short_8: MFI4EHBU

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/MFI4EHBUPO57U4DPPGENS4BXWS \
  | 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: 6151c21c347bbbfa706f7988d97037b49645d2b2b13b93bd808a1329c50bc3fe

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6cf23029663e7d70370f720c875292fd702ceacc40b045b3098ce28fc4676283",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2011-06-04T18:47:20Z",
    "title_canon_sha256": "d85504956787c946d8cb31c7f41c5e0a8df6f8821c0992734d4e9e465932078f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1106.0850",
    "kind": "arxiv",
    "version": 1
  }
}