Pith Number

pith:WPFSAN23

pith:2013:WPFSAN23CFB7UN22DL5P3GRERI

not attested not anchored not stored refs pending

On detection of the free inner core nutation from VLBI data

Z. Malkin

arxiv:1309.5295 v1 · 2013-09-20 · physics.geo-ph · 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{WPFSAN23CFB7UN22DL5P3GRERI}

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	2026-05-18T02:30:32.492545Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b3cb20375b1143fa375a1afafd9a248a067996d43d9a24c350f1ea356f8a0c11

Aliases

arxiv: 1309.5295 · arxiv_version: 1309.5295v1 · doi: 10.48550/arxiv.1309.5295 · pith_short_12: WPFSAN23CFB7 · pith_short_16: WPFSAN23CFB7UN22 · pith_short_8: WPFSAN23

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/WPFSAN23CFB7UN22DL5P3GRERI \
  | 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: b3cb20375b1143fa375a1afafd9a248a067996d43d9a24c350f1ea356f8a0c11

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5050be8b6ecc7cedd0965202ea0e412b14a6a9983b517009ba596de0fb2ae4d0",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.geo-ph",
    "submitted_at": "2013-09-20T15:15:23Z",
    "title_canon_sha256": "c4849c4a7964a9439b3dbdc68f042701a81dafa1d0ab27a7f211cedfb7d67ff3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1309.5295",
    "kind": "arxiv",
    "version": 1
  }
}