Pith Number

pith:UPXHMDP2

pith:2009:UPXHMDP2DJBQXIUCD26OKOR7XV

not attested not anchored not stored refs pending

Magnetostrophic MRI in the Earth's Outer Core

Emmanuel Dormy, Ludovic Petitdemange, Steven A. Balbus

arxiv:0901.1217 v1 · 2009-01-09 · astro-ph.EP · physics.geo-ph

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

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	2026-05-18T02:15:02.811524Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a3ee760dfa1a430ba2821ebce53a3fbd720d473faf442f6b32576244fd7e3b02

Aliases

arxiv: 0901.1217 · arxiv_version: 0901.1217v1 · doi: 10.48550/arxiv.0901.1217 · pith_short_12: UPXHMDP2DJBQ · pith_short_16: UPXHMDP2DJBQXIUC · pith_short_8: UPXHMDP2

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/UPXHMDP2DJBQXIUCD26OKOR7XV \
  | 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: a3ee760dfa1a430ba2821ebce53a3fbd720d473faf442f6b32576244fd7e3b02

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "254d7000f8da352ac970cb73b8def1608106809cec85f9143a988d77180d93c8",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-01-09T10:57:21Z",
    "title_canon_sha256": "7f24e5afbebcc8909ecfd666a8c5537966d2cd0bce7f47cea7f862a1b7eff63e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.1217",
    "kind": "arxiv",
    "version": 1
  }
}