Pith Number

pith:FXBRP4A5

pith:2009:FXBRP4A5ZPR2RV4UIXUOO2EXCF

not attested not anchored not stored refs pending

VFISV: Very Fast Inversion of the Stokes Vector for the Helioseismic and Magnetic Imager

H. Socas-Navarro, J.M. Borrero, J. Schou, M. Kubo, R. Bogart, S. Couvidat, S. Tomczyk

arxiv:0901.2702 v1 · 2009-01-18 · astro-ph.IM · 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{FXBRP4A5ZPR2RV4UIXUOO2EXCF}

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	2026-05-18T02:14:56.965172Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2dc317f01dcbe3a8d79445e8e76897114061d303f254b0b91f3fbe4cf7e9c529

Aliases

arxiv: 0901.2702 · arxiv_version: 0901.2702v1 · doi: 10.48550/arxiv.0901.2702 · pith_short_12: FXBRP4A5ZPR2 · pith_short_16: FXBRP4A5ZPR2RV4U · pith_short_8: FXBRP4A5

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/FXBRP4A5ZPR2RV4UIXUOO2EXCF \
  | 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: 2dc317f01dcbe3a8d79445e8e76897114061d303f254b0b91f3fbe4cf7e9c529

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c553ebb9e36a30784537232071940d319a7bdd945a7148b12ee8254cae85ae4d",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-01-18T13:14:10Z",
    "title_canon_sha256": "3460d6cf8566dcb8f27dc8e9eddc638597c078b7de56aa9ce08dc00235fa5a34"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0901.2702",
    "kind": "arxiv",
    "version": 1
  }
}