Pith Number

pith:4W2QKMOD

pith:2013:4W2QKMODXZ2Y5YHD7QMTIGLSF7

not attested not anchored not stored refs pending

Unformatted Digital Fiber-Optic Data Transmission for Radio Astronomy Front-Ends

Jason J. Castro, J. Richard Fisher, Matthew A. Morgan

arxiv:1305.0795 v1 · 2013-05-03 · 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{4W2QKMODXZ2Y5YHD7QMTIGLSF7}

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	2026-05-18T01:50:12.578557Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5b50531c3be758ee0e3fc193419722fca53a433eabcc8d7a12866920193a8f6

Aliases

arxiv: 1305.0795 · arxiv_version: 1305.0795v1 · doi: 10.48550/arxiv.1305.0795 · pith_short_12: 4W2QKMODXZ2Y · pith_short_16: 4W2QKMODXZ2Y5YHD · pith_short_8: 4W2QKMOD

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/4W2QKMODXZ2Y5YHD7QMTIGLSF7 \
  | 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: e5b50531c3be758ee0e3fc193419722fca53a433eabcc8d7a12866920193a8f6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "596def55c3dff0b3ad1b4570e157508fb580385b55587ea2d447c60b47b4d3d0",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-05-03T18:31:40Z",
    "title_canon_sha256": "ef21b49ab77e94a08efc5f95079eb2e24c9bb2933d09e693c364877cd6513f60"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.0795",
    "kind": "arxiv",
    "version": 1
  }
}