Pith Number

pith:YKKZGR4F

pith:2019:YKKZGR4FKDGWDGWTWSVAYETGHN

not attested not anchored not stored refs pending

An open source toolkit for the tracking, termination and recovery of high altitude balloon flights and payloads

Anthony M. Brown, Benjamin Funk, C. Barth Netterfield, Lun Li, Marc Funk, Paul Clark, Richard E. Meadows, Richard J. Massey, Tobias Funk

arxiv:1904.04321 v1 · 2019-04-08 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YKKZGR4FKDGWDGWTWSVAYETGHN}

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	2026-05-17T23:48:59.293541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c29593478550cd619ad3b4aa0c12663b498fb63ada71530f92d3ffedeb26fb49

Aliases

arxiv: 1904.04321 · arxiv_version: 1904.04321v1 · doi: 10.48550/arxiv.1904.04321 · pith_short_12: YKKZGR4FKDGW · pith_short_16: YKKZGR4FKDGWDGWT · pith_short_8: YKKZGR4F

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/YKKZGR4FKDGWDGWTWSVAYETGHN \
  | 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: c29593478550cd619ad3b4aa0c12663b498fb63ada71530f92d3ffedeb26fb49

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ca3626fd32c54fc8afbbf06de8ed444ac42a00e84541dbd4766bd2d08ed4494a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-04-08T19:35:08Z",
    "title_canon_sha256": "687a22a8bf6f303cc48edd98aa565cd09e208762dcad3a1009c68818b8dd50bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04321",
    "kind": "arxiv",
    "version": 1
  }
}