Pith Number

pith:Q52D66QJ

pith:2009:Q52D66QJIL5IXOKHCJQP3KD55I

not attested not anchored not stored refs pending

CHIANTI - An atomic database for emission lines. X. Spectral atlas of a cold feature observed with Hinode/EIS

E. Landi, P.R. Young

arxiv:0907.3490 v1 · 2009-07-20 · 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{Q52D66QJIL5IXOKHCJQP3KD55I}

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	2026-05-18T02:12:55.357753Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87743f7a0942fa8bb9471260fda87dea27992f3560cadcae0fd875c6c232865f

Aliases

arxiv: 0907.3490 · arxiv_version: 0907.3490v1 · doi: 10.48550/arxiv.0907.3490 · pith_short_12: Q52D66QJIL5I · pith_short_16: Q52D66QJIL5IXOKH · pith_short_8: Q52D66QJ

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/Q52D66QJIL5IXOKHCJQP3KD55I \
  | 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: 87743f7a0942fa8bb9471260fda87dea27992f3560cadcae0fd875c6c232865f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b6eee87ac749d3a0101bdaa015a5627746e27d9f91a1a699b31caf7ff7aee69",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-20T20:33:56Z",
    "title_canon_sha256": "888915a6b0b2551ab664753ebc88d24e43efb7af180a326770e99529d56e9aac"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.3490",
    "kind": "arxiv",
    "version": 1
  }
}