Pith Number

pith:ZGPT4ZCU

pith:2019:ZGPT4ZCUMIIFYTVMQPLSJXKRYZ

not attested not anchored not stored refs pending

Stable attitude dynamics of planar helio-stable and drag-stable sails

Camilla Colombo, Narc\'is Miguel

arxiv:1907.06908 v1 · 2019-07-16 · astro-ph.EP · math.DS

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZGPT4ZCUMIIFYTVMQPLSJXKRYZ}

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	2026-05-17T23:40:28.724255Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c99f3e645462105c4eac83d724dd51c65320246e6113422adc375dc716f31839

Aliases

arxiv: 1907.06908 · arxiv_version: 1907.06908v1 · doi: 10.48550/arxiv.1907.06908 · pith_short_12: ZGPT4ZCUMIIF · pith_short_16: ZGPT4ZCUMIIFYTVM · pith_short_8: ZGPT4ZCU

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/ZGPT4ZCUMIIFYTVMQPLSJXKRYZ \
  | 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: c99f3e645462105c4eac83d724dd51c65320246e6113422adc375dc716f31839

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c4a5a1c781ff596d016e5d36c4da294334f301b11a5cc6b1ab7ec944dbf0d6e9",
    "cross_cats_sorted": [
      "math.DS"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-07-16T09:24:47Z",
    "title_canon_sha256": "8fa236268e9da54c629a4183beca5a00780c74782f733b725681ce838ddccaa9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06908",
    "kind": "arxiv",
    "version": 1
  }
}