Pith Number

pith:GMDVCCYO

pith:2008:GMDVCCYORJ27EIB4G6UYP4M3VL

not attested not anchored not stored refs pending

PCA detection and denoising of Zeeman signatures in stellar polarised spectra

A. Asensio Ramos, J. C. Ramirez Velez, M. J. Martinez Gonzalez, M. Kopf, M. Semel, T. A. Carroll

arxiv:0804.4692 v1 · 2008-04-29 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{GMDVCCYORJ27EIB4G6UYP4M3VL}

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	2026-05-18T02:15:53.261606Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3307510b0e8a75f2203c37a987f19baaef70cfc108613d99a7c631f91b60ecf7

Aliases

arxiv: 0804.4692 · arxiv_version: 0804.4692v1 · doi: 10.48550/arxiv.0804.4692 · pith_short_12: GMDVCCYORJ27 · pith_short_16: GMDVCCYORJ27EIB4 · pith_short_8: GMDVCCYO

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/GMDVCCYORJ27EIB4G6UYP4M3VL \
  | 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: 3307510b0e8a75f2203c37a987f19baaef70cfc108613d99a7c631f91b60ecf7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e4470d6177fb55b7178adccfe3b97c1d00bf9135cf5954e691f3be159a5c059",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-04-29T20:43:41Z",
    "title_canon_sha256": "4a1dde0ad3db98024041d94ef7f0fda16eb92c955844dc2f1f2735146ff19bae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0804.4692",
    "kind": "arxiv",
    "version": 1
  }
}