Pith Number

pith:GSSYIZHT

pith:2015:GSSYIZHTYWKXGH2CUYVP6OHFOC

not attested not anchored not stored refs pending

Sparse representations and convex optimization as tools for LOFAR radio interferometric imaging

Arnaud Woiselle, Cyril Tasse, Hugh Garsden, Jean Luc Starck, J\'er\^ome Bobin, John P. McKean, Julien N. Girard, St\'ephane Corbel

arxiv:1504.03896 v2 · 2015-04-15 · astro-ph.IM

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

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	2026-05-18T01:34:41.917376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

34a58464f3c595731f42a62aff38e570b2fd0d7165c5c2786461f04276e3165b

Aliases

arxiv: 1504.03896 · arxiv_version: 1504.03896v2 · doi: 10.48550/arxiv.1504.03896 · pith_short_12: GSSYIZHTYWKX · pith_short_16: GSSYIZHTYWKXGH2C · pith_short_8: GSSYIZHT

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/GSSYIZHTYWKXGH2CUYVP6OHFOC \
  | 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: 34a58464f3c595731f42a62aff38e570b2fd0d7165c5c2786461f04276e3165b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cdb700dcc075c7b2ee1a19b8df0e5c8b7d9f5082f096ff7dbdf44da36ccd8dec",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-04-15T12:59:52Z",
    "title_canon_sha256": "e923a8ec7703c3ef5c3cdab79331548013c0451b596a95734113543f3d6daed6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03896",
    "kind": "arxiv",
    "version": 2
  }
}