Pith Number

pith:I6SFGIU2

pith:2018:I6SFGIU266IW6EB7WKESFH5CZL

not attested not anchored not stored refs pending

A Tether-Assisted Space Launch System for Super-Earths

Alex R. Howe

arxiv:1805.06438 v1 · 2018-05-16 · physics.pop-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{I6SFGIU266IW6EB7WKESFH5CZL}

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	2026-05-18T00:15:47.789813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

47a453229af7916f103fb289229fa2cae4770452ca9f64724e604186b1ce3f23

Aliases

arxiv: 1805.06438 · arxiv_version: 1805.06438v1 · doi: 10.48550/arxiv.1805.06438 · pith_short_12: I6SFGIU266IW · pith_short_16: I6SFGIU266IW6EB7 · pith_short_8: I6SFGIU2

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/I6SFGIU266IW6EB7WKESFH5CZL \
  | 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: 47a453229af7916f103fb289229fa2cae4770452ca9f64724e604186b1ce3f23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "051662c8bece9df03d262075f40fce4579ca7352278c4db458a5b131a803b289",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2018-05-16T17:34:25Z",
    "title_canon_sha256": "a1b55289c43ba9670aa484511319e2da615821dd244eb6e4cd14a8eddd35edaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.06438",
    "kind": "arxiv",
    "version": 1
  }
}