Pith Number

pith:2H56CL3C

pith:2018:2H56CL3CEZFD3FOGMDP2VJIIOL

not attested not anchored not stored refs pending

Why is Interstellar Object 1I/2017 U1 (`Oumuamua) Rocky, Tumbling and Very Prolate?

J. I. Katz

arxiv:1802.02273 v1 · 2018-02-07 · astro-ph.EP · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2H56CL3CEZFD3FOGMDP2VJIIOL}

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.

Cited by

1 paper in Pith

The Natural History of 'Oumuamua

Receipt and verification

First computed	2026-05-18T00:15:57.800531Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d1fbe12f62264a3d95c660dfaaa50872f372ff46dee45cf7b000bafb933114d3

Aliases

arxiv: 1802.02273 · arxiv_version: 1802.02273v1 · doi: 10.48550/arxiv.1802.02273 · pith_short_12: 2H56CL3CEZFD · pith_short_16: 2H56CL3CEZFD3FOG · pith_short_8: 2H56CL3C

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/2H56CL3CEZFD3FOGMDP2VJIIOL \
  | 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: d1fbe12f62264a3d95c660dfaaa50872f372ff46dee45cf7b000bafb933114d3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb0220062cd1a1208058f29f7515d2db18cb9c5c741e47bdaea258ff1a350215",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-02-07T00:44:23Z",
    "title_canon_sha256": "87be207e2abbba2728519eb9e4fc36c0c2a51526e7a33a9bcf31eb5b1c64ffaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02273",
    "kind": "arxiv",
    "version": 1
  }
}