Pith Number

pith:URQTS4V2

pith:2018:URQTS4V2HFZLZU3YANCUGZBTBY

not attested not anchored not stored refs pending

Tidal evolution of the Moon from a high-obliquity, high-angular-momentum Earth

Douglas P. Hamilton, Matija \'Cuk, Sarah T. Stewart, Simon J. Lock

arxiv:1802.03356 v1 · 2018-02-09 · 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{URQTS4V2HFZLZU3YANCUGZBTBY}

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	2026-05-18T00:23:57.845175Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a4613972ba3972bcd37803454364330e3f8b57772946e9d30d57b38318bd46ea

Aliases

arxiv: 1802.03356 · arxiv_version: 1802.03356v1 · doi: 10.48550/arxiv.1802.03356 · pith_short_12: URQTS4V2HFZL · pith_short_16: URQTS4V2HFZLZU3Y · pith_short_8: URQTS4V2

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/URQTS4V2HFZLZU3YANCUGZBTBY \
  | 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: a4613972ba3972bcd37803454364330e3f8b57772946e9d30d57b38318bd46ea

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2a5e62e7c08c18712ee614ea5591c355303daffe37fc2c5a1b828e6b5df4d2e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-02-09T17:09:16Z",
    "title_canon_sha256": "892bf8ce958729f5d15882f3aec126a7fd54bc1d7650503c3450064e6563b357"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.03356",
    "kind": "arxiv",
    "version": 1
  }
}