Pith Number

pith:ETKWP56J

pith:2016:ETKWP56JUX2QQC3MKAJ6QH3PBD

not attested not anchored not stored refs pending

Formation of the penumbra and start of the Evershed flow

F. Zuccarello, M. Murabito, P. Romano, S.K. Solanki, S. L. Guglielmino

arxiv:1604.05610 v1 · 2016-04-19 · 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{ETKWP56JUX2QQC3MKAJ6QH3PBD}

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	2026-05-18T01:11:31.036820Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

24d567f7c9a5f5080b6c5013e81f6f08c67cd5982cb36d3c390d73d4ed4a5384

Aliases

arxiv: 1604.05610 · arxiv_version: 1604.05610v1 · doi: 10.48550/arxiv.1604.05610 · pith_short_12: ETKWP56JUX2Q · pith_short_16: ETKWP56JUX2QQC3M · pith_short_8: ETKWP56J

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/ETKWP56JUX2QQC3MKAJ6QH3PBD \
  | 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: 24d567f7c9a5f5080b6c5013e81f6f08c67cd5982cb36d3c390d73d4ed4a5384

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "834c82c8857d2b88abbc9816c9081666ea79b10de84ed807ed6a0e7455b98b1f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-04-19T14:57:29Z",
    "title_canon_sha256": "fd6d7c7cf04d5f6fa43c121378f9dc24a6d3e6e0ec245d0f133909eced0898bb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.05610",
    "kind": "arxiv",
    "version": 1
  }
}