Pith Number

pith:NCHCT7NN

pith:2018:NCHCT7NNOTZVDWMWO2EQTXF5XL

not attested not anchored not stored refs pending

The Scattered Disc of HR 8799

Alexander Krivov, Fabian Geiler, Mark Booth, Torsten L\"ohne

arxiv:1811.09470 v1 · 2018-11-23 · 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{NCHCT7NNOTZVDWMWO2EQTXF5XL}

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	2026-05-18T00:00:03.350489Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

688e29fdad74f351d996768909dcbdbafcae9d3dd7b1524261d0d11a57ec177a

Aliases

arxiv: 1811.09470 · arxiv_version: 1811.09470v1 · doi: 10.48550/arxiv.1811.09470 · pith_short_12: NCHCT7NNOTZV · pith_short_16: NCHCT7NNOTZVDWMW · pith_short_8: NCHCT7NN

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/NCHCT7NNOTZVDWMWO2EQTXF5XL \
  | 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: 688e29fdad74f351d996768909dcbdbafcae9d3dd7b1524261d0d11a57ec177a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b2a01750d5c686bb88af1bd271ebca6bbd8e06659ef84c692838161d35d264a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-11-23T13:33:23Z",
    "title_canon_sha256": "b446db8afc138514717b7f72c8ef5570dd287fc5984ba03cf4902eaba61b49f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.09470",
    "kind": "arxiv",
    "version": 1
  }
}