Pith Number

pith:U37UBLGQ

pith:2011:U37UBLGQFB7RZCE4NM6N6CUZRK

not attested not anchored not stored refs pending

Magnetic feature tracking, what determines the speed?

G. Guerrero, M. Dikpati, M. Rheinhardt

arxiv:1111.3638 v1 · 2011-11-15 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U37UBLGQFB7RZCE4NM6N6CUZRK}

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	2026-05-18T01:59:32.784049Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6ff40acd0287f1c889c6b3cdf0a998abae36a4f59c509a7037c1536564f3c7c

Aliases

arxiv: 1111.3638 · arxiv_version: 1111.3638v1 · doi: 10.48550/arxiv.1111.3638 · pith_short_12: U37UBLGQFB7R · pith_short_16: U37UBLGQFB7RZCE4 · pith_short_8: U37UBLGQ

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/U37UBLGQFB7RZCE4NM6N6CUZRK \
  | 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: a6ff40acd0287f1c889c6b3cdf0a998abae36a4f59c509a7037c1536564f3c7c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7dd32b9d7ee14b400f918a9293390143809b7cae134c750b193c430c4244ac95",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-11-15T21:00:00Z",
    "title_canon_sha256": "13dfada389a56c54e1607997bcbd6fa78f93da6bfc9a472858591ad1a3638d4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.3638",
    "kind": "arxiv",
    "version": 1
  }
}