Pith Number

pith:2ACP7DHD

pith:2025:2ACP7DHDM2LJWUUOVA3RFEX4WF

not attested not anchored not stored refs pending

Torqued Accelerator using Radiation from the Sun (TARS) for Interstellar Payloads

David Kipping, Kathryn Lampo

arxiv:2507.17615 v2 · 2025-07-23 · physics.space-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2ACP7DHDM2LJWUUOVA3RFEX4WF}

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	2026-07-05T11:43:34.413191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d004ff8ce366969b528ea8371292fcb165d3ddf4448720e4307c791ce2b0ab39

Aliases

arxiv: 2507.17615 · arxiv_version: 2507.17615v2 · doi: 10.48550/arxiv.2507.17615 · pith_short_12: 2ACP7DHDM2LJ · pith_short_16: 2ACP7DHDM2LJWUUO · pith_short_8: 2ACP7DHD

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/2ACP7DHDM2LJWUUOVA3RFEX4WF \
  | 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: d004ff8ce366969b528ea8371292fcb165d3ddf4448720e4307c791ce2b0ab39

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a671f54241bedb2a7ecbcdeddec883b3f91507eff6553dd5f184516d5d77cf3c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.space-ph",
    "submitted_at": "2025-07-23T15:46:58Z",
    "title_canon_sha256": "3d4f1e10e78df1dd1f290194ff43fae0eda573ff6ef573234418b2238d350b39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.17615",
    "kind": "arxiv",
    "version": 2
  }
}