Pith Number

pith:4JPISCUN

pith:2013:4JPISCUNGEJZJBHKQXWN3CW27S

not attested not anchored not stored refs pending

Principal Component Analysis of Spectral Line Data: Analytic Formulation

C. M. Brunt, M.H. Heyer

arxiv:1305.5071 v1 · 2013-05-22 · astro-ph.GA · astro-ph.IM

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4JPISCUNGEJZJBHKQXWN3CW27S}

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	2026-05-18T01:49:47.942769Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e25e890a8d31139484ea85ecdd8adafcac09cd8c155c668634829333606cde6a

Aliases

arxiv: 1305.5071 · arxiv_version: 1305.5071v1 · doi: 10.48550/arxiv.1305.5071 · pith_short_12: 4JPISCUNGEJZ · pith_short_16: 4JPISCUNGEJZJBHK · pith_short_8: 4JPISCUN

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/4JPISCUNGEJZJBHKQXWN3CW27S \
  | 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: e25e890a8d31139484ea85ecdd8adafcac09cd8c155c668634829333606cde6a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2c5baa69553fa58f9d363342dd004b57f26b2e9b20a8daaedba888bd9be27b5c",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2013-05-22T10:12:50Z",
    "title_canon_sha256": "fa2e85c6466f66dc71fa8b7d13a018294effe2a9c2103634fb6a62cc030b2aa7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5071",
    "kind": "arxiv",
    "version": 1
  }
}