Pith Number

pith:52OL5ENQ

pith:2021:52OL5ENQQ4CKTNEH7S36GSYG76

not attested not anchored not stored refs pending

Oort cloud Ecology II: The chronology of the formation of the Oort cloud

Anthony Brown (Leiden Observatory), Maxwell X. Cai (Leiden Observatory), Santiago Torres (UCLA), Simon Portegies Zwart (Leiden Observatory)

arxiv:2105.12816 v2 · 2021-05-26 · astro-ph.EP · astro-ph.GA · astro-ph.SR · nlin.CD

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{52OL5ENQQ4CKTNEH7S36GSYG76}

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	2026-07-05T03:08:30.961429Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ee9cbe91b08704a9b487fcb7e34b06ffbb4850b8e879d06bf86059502a3b5f40

Aliases

arxiv: 2105.12816 · arxiv_version: 2105.12816v2 · doi: 10.48550/arxiv.2105.12816 · pith_short_12: 52OL5ENQQ4CK · pith_short_16: 52OL5ENQQ4CKTNEH · pith_short_8: 52OL5ENQ

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/52OL5ENQQ4CKTNEH7S36GSYG76 \
  | 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: ee9cbe91b08704a9b487fcb7e34b06ffbb4850b8e879d06bf86059502a3b5f40

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "524b2d3eaa9091980ae02d1b42cbb9e677e2af228aebf10d86a40d6c9a281f20",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR",
      "nlin.CD"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2021-05-26T20:07:03Z",
    "title_canon_sha256": "5b7fc92edbe3d2a2284f546074fdb85038473259693c7faff1d1438f12774ebe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.12816",
    "kind": "arxiv",
    "version": 2
  }
}