Pith Number

pith:OU6NT5VZ

pith:2011:OU6NT5VZVQDWYLRUGQVWIX7STT

not attested not anchored not stored refs pending

The Evolution of Dark Canopies Around Active Regions

E. Robbrecht, K. Muglach, Y.-M. Wang

arxiv:1103.4373 v1 · 2011-03-22 · 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{OU6NT5VZVQDWYLRUGQVWIX7STT}

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	2026-05-18T02:02:48.057180Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

753cd9f6b9ac076c2e34342b645ff29cdcd4eb102f5d06198e5a433d94054632

Aliases

arxiv: 1103.4373 · arxiv_version: 1103.4373v1 · doi: 10.48550/arxiv.1103.4373 · pith_short_12: OU6NT5VZVQDW · pith_short_16: OU6NT5VZVQDWYLRU · pith_short_8: OU6NT5VZ

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/OU6NT5VZVQDWYLRUGQVWIX7STT \
  | 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: 753cd9f6b9ac076c2e34342b645ff29cdcd4eb102f5d06198e5a433d94054632

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "597d8ff93fa1e9747fa2e764b53ac6de9cfade46eb77efc440323f752a3f05ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-03-22T20:35:59Z",
    "title_canon_sha256": "a789aa2945d8c53a1a3f1c60b2f541ff93dc3a6e3ac65b9d66da0df7b5ba7159"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.4373",
    "kind": "arxiv",
    "version": 1
  }
}