Pith Number

pith:U6V2FTXS

pith:2020:U6V2FTXSATGNVY64CZNV5LBFZO

not attested not anchored not stored refs pending

Exploration of the outer solar system with fast and small sailcraft

Abraham Loeb, Edward Witten, Kevin Parkin, Peter Klupar, Slava G. Turyshev, S. Pete Worden, Zachary Manchester

arxiv:2005.12336 v2 · 2020-05-25 · astro-ph.IM · astro-ph.EP · astro-ph.SR · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6V2FTXSATGNVY64CZNV5LBFZO}

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	2026-07-05T01:07:14.230803Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7aba2cef204ccdae3dc165b5eac25cbb2789569fd077f3d196f8dc9cb9b0e5e

Aliases

arxiv: 2005.12336 · arxiv_version: 2005.12336v2 · doi: 10.48550/arxiv.2005.12336 · pith_short_12: U6V2FTXSATGN · pith_short_16: U6V2FTXSATGNVY64 · pith_short_8: U6V2FTXS

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/U6V2FTXSATGNVY64CZNV5LBFZO \
  | 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: a7aba2cef204ccdae3dc165b5eac25cbb2789569fd077f3d196f8dc9cb9b0e5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "13fc560dcfd157fef2062089c5f9f4799ad50e994f7870963d5b80b301036eb3",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.SR",
      "gr-qc"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2020-05-25T18:42:30Z",
    "title_canon_sha256": "81e42886526ddbd558871775b01d0c124779c07007e6c8afdabf6c0bce47d7af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.12336",
    "kind": "arxiv",
    "version": 2
  }
}