Pith Number

pith:IRWNGEAJ

pith:2009:IRWNGEAJMR63YMEWPTPMEBGU4Q

not attested not anchored not stored refs pending

Observations of a solar flare and filament eruption in Lyman alpha and X-rays

F. Rubio da Costa, F. Zuccarello, L. Fletcher, N. Labrosse

arxiv:0909.4705 v1 · 2009-09-25 · 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{IRWNGEAJMR63YMEWPTPMEBGU4Q}

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	2026-07-04T15:51:55.951924Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

446cd31009647dbc30967cdec204d4e42a265da82fbd119525c983e640233ba0

Aliases

arxiv: 0909.4705 · arxiv_version: 0909.4705v1 · doi: 10.48550/arxiv.0909.4705 · pith_short_12: IRWNGEAJMR63 · pith_short_16: IRWNGEAJMR63YMEW · pith_short_8: IRWNGEAJ

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/IRWNGEAJMR63YMEWPTPMEBGU4Q \
  | 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: 446cd31009647dbc30967cdec204d4e42a265da82fbd119525c983e640233ba0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72fe98a8deb5addd2fc0b23fde40af619720489a62cf734b226cb7e539ccbc3a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-25T13:59:31Z",
    "title_canon_sha256": "468bb84a94bc23c8ee690cd02853cf2989d9287096abd6d5a5e3027e5716ebe3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4705",
    "kind": "arxiv",
    "version": 1
  }
}