Pith Number

pith:RWRBAXAD

pith:2018:RWRBAXADIWI7FQOVUGKVJKWGZZ

not attested not anchored not stored refs pending

Cobalt: A GPU-based correlator and beamformer for LOFAR

Alexander S. van Amesfoort, G. Marcel Loose, J. Jan David Mol, John W. Romein, Michiel A. Brentjens, P. Chris Broekema, Ronald Nijboer, Wouter F.A. Klijn

arxiv:1801.04834 v3 · 2018-01-15 · 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{RWRBAXADIWI7FQOVUGKVJKWGZZ}

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	2026-05-18T00:14:40.494592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8da2105c034591f2c1d5a19554aac6ce4506e8fa15efbcb2ced678ccddf3fd50

Aliases

arxiv: 1801.04834 · arxiv_version: 1801.04834v3 · doi: 10.48550/arxiv.1801.04834 · pith_short_12: RWRBAXADIWI7 · pith_short_16: RWRBAXADIWI7FQOV · pith_short_8: RWRBAXAD

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/RWRBAXADIWI7FQOVUGKVJKWGZZ \
  | 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: 8da2105c034591f2c1d5a19554aac6ce4506e8fa15efbcb2ced678ccddf3fd50

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a202545b2c826c86e8e64dd662b8062e58a09aa6af9aa2d86483a29faece2ed",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-01-15T15:00:51Z",
    "title_canon_sha256": "61a454972011971ce7b06fa9749570beb5cc18e7a29cd47d96fb67f3a7bb9271"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.04834",
    "kind": "arxiv",
    "version": 3
  }
}