Pith Number

pith:K4JB4OUN

pith:2019:K4JB4OUNEWZIOVWHERC6R4KVEG

not attested not anchored not stored refs pending

1I/`Oumuamua and the Problem of Survival of Oort Cloud Comets Near the Sun

Zdenek Sekanina

arxiv:1903.06300 v3 · 2019-03-15 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K4JB4OUNEWZIOVWHERC6R4KVEG}

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	2026-05-17T23:46:52.687035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57121e3a8d25b28756c72445e8f15521936a02ad429182fb332b91756e96bda4

Aliases

arxiv: 1903.06300 · arxiv_version: 1903.06300v3 · doi: 10.48550/arxiv.1903.06300 · pith_short_12: K4JB4OUNEWZI · pith_short_16: K4JB4OUNEWZIOVWH · pith_short_8: K4JB4OUN

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/K4JB4OUNEWZIOVWHERC6R4KVEG \
  | 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: 57121e3a8d25b28756c72445e8f15521936a02ad429182fb332b91756e96bda4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0f97d4131a6bafa5fa33365b304f937f4fe6406a7b18cdb1f901d42a6692b4db",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-03-15T00:06:00Z",
    "title_canon_sha256": "6459669dacf524f8131dd367c8417d083025a3c630ac2b5546770b71ab6f63e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.06300",
    "kind": "arxiv",
    "version": 3
  }
}