Pith Number

pith:VXKXFT6C

pith:2018:VXKXFT6CKPX4IXIX2TVN3ATJRY

not attested not anchored not stored refs pending

Steam balloon concept for lifting rockets to launch altitude

Kimmo Ruosteenoja, Pekka Janhunen, Petri Toivanen

arxiv:1803.03111 v2 · 2018-02-27 · 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{VXKXFT6CKPX4IXIX2TVN3ATJRY}

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	2026-05-17T23:55:29.547388Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

add572cfc253efc45d17d4eadd82698e01d7c5c3861e0596350f469268daabf5

Aliases

arxiv: 1803.03111 · arxiv_version: 1803.03111v2 · doi: 10.48550/arxiv.1803.03111 · pith_short_12: VXKXFT6CKPX4 · pith_short_16: VXKXFT6CKPX4IXIX · pith_short_8: VXKXFT6C

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/VXKXFT6CKPX4IXIX2TVN3ATJRY \
  | 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: add572cfc253efc45d17d4eadd82698e01d7c5c3861e0596350f469268daabf5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d46c990d0825a0aca41cd1a398b2e3ad7f018aace01c99e83d728f7a8856715b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2018-02-27T10:48:47Z",
    "title_canon_sha256": "629dee157703017239686a5fbb88018a039b968f82e4a3b885f45b2215b47a90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.03111",
    "kind": "arxiv",
    "version": 2
  }
}