pith. sign in
Pith Number

pith:6YK2PJJE

pith:2016:6YK2PJJEHDEOEWHPYCVLCYY2VP
not attested not anchored not stored refs pending

On the formation of a stable penumbra in a region of flux emergence in the Sun

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

arxiv:1611.04749 v1 · 2016-11-15 · astro-ph.SR

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{6YK2PJJEHDEOEWHPYCVLCYY2VP}

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 2026-05-18T00:53:06.776580Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

f615a7a52438c8e258efc0aab1631aabe30cab59f2ef0a105906d184426367dc

Aliases

arxiv: 1611.04749 · arxiv_version: 1611.04749v1 · doi: 10.48550/arxiv.1611.04749 · pith_short_12: 6YK2PJJEHDEO · pith_short_16: 6YK2PJJEHDEOEWHP · pith_short_8: 6YK2PJJE
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/6YK2PJJEHDEOEWHPYCVLCYY2VP \
  | 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: f615a7a52438c8e258efc0aab1631aabe30cab59f2ef0a105906d184426367dc
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "cb8f7fe62981b1d67a855cd5732945762cd7f2a38cbe2043370ad62dd84b741b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-11-15T09:09:46Z",
    "title_canon_sha256": "d15b70cac414de5a3cce2c2f464c4c5a9af0372aeeb1842761d120fa664464df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1611.04749",
    "kind": "arxiv",
    "version": 1
  }
}