Pith Number

pith:Q6LDLNVR

pith:2009:Q6LDLNVRQ3U4NX3QGIIMSN6XSH

not attested not anchored not stored refs pending

On the physical origin of the second solar spectrum of the Sc II line at 4247 A

Luca Belluzzi

arxiv:0909.5552 v1 · 2009-09-30 · 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{Q6LDLNVRQ3U4NX3QGIIMSN6XSH}

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	2026-05-18T02:11:36.042987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

879635b6b186e9c6df703210c937d791d3fad9399cefbae1169f76c442dfe370

Aliases

arxiv: 0909.5552 · arxiv_version: 0909.5552v1 · doi: 10.48550/arxiv.0909.5552 · pith_short_12: Q6LDLNVRQ3U4 · pith_short_16: Q6LDLNVRQ3U4NX3Q · pith_short_8: Q6LDLNVR

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/Q6LDLNVRQ3U4NX3QGIIMSN6XSH \
  | 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: 879635b6b186e9c6df703210c937d791d3fad9399cefbae1169f76c442dfe370

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "39a66261eb7609312b620550a7a2eab6c0a661a25dad71f64ff3d9e2cf5a5359",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-30T10:21:06Z",
    "title_canon_sha256": "f66bd4ce4cb97b837c737877701b4450a80f3f9e24aa7df5d493b8ff8ae379d5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.5552",
    "kind": "arxiv",
    "version": 1
  }
}