Pith Number

pith:QH432C74

pith:2019:QH432C747ESHMYLIBWB2KKUP77

not attested not anchored not stored refs pending

The Halo Drive: Fuel-Free Relativistic Propulsion of Large Masses via Recycled Boomerang Photons

David Kipping

arxiv:1903.03423 v1 · 2019-02-28 · gr-qc · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QH432C747ESHMYLIBWB2KKUP77}

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.

Cited by

1 paper in Pith

Testing Black Holes with Interstellar Missions: I. Orbiting Probes

Receipt and verification

First computed	2026-05-17T23:51:45.527386Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81f9bd0bfcf9247661680d83a52a8fffd796071bff71c185a7460d9e16237a19

Aliases

arxiv: 1903.03423 · arxiv_version: 1903.03423v1 · doi: 10.48550/arxiv.1903.03423 · pith_short_12: QH432C747ESH · pith_short_16: QH432C747ESHMYLI · pith_short_8: QH432C74

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/QH432C747ESHMYLIBWB2KKUP77 \
  | 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: 81f9bd0bfcf9247661680d83a52a8fffd796071bff71c185a7460d9e16237a19

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3c9bd7aac72b89c7e54102dd8c45d5a5a86e23516dec1c672a806adb33927873",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2019-02-28T17:23:23Z",
    "title_canon_sha256": "235aab0472bd4c60a746001b3218190fb10185fdbe559b7eaa9e10ace4e39287"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.03423",
    "kind": "arxiv",
    "version": 1
  }
}