Pith Number

pith:4W5AKJ6D

pith:2021:4W5AKJ6D2ZXMGDO4YCPKHAEDLF

not attested not anchored not stored refs pending

Radio Detection of VIK J2318$-$3113, the Most Distant Radio-Loud Quasar ($z$=6.44)

A. Caccianiga, A. Moretti, G. Drouart, J. W. Broderick, L. Ighina, N. Seymour, S. Belladitta

arxiv:2101.11371 v2 · 2021-01-27 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4W5AKJ6D2ZXMGDO4YCPKHAEDLF}

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	2026-07-05T02:25:36.452355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e5ba0527c3d66ec30ddcc09ea3808359771789768bfc1c278bec1c7fed0f26a1

Aliases

arxiv: 2101.11371 · arxiv_version: 2101.11371v2 · doi: 10.48550/arxiv.2101.11371 · pith_short_12: 4W5AKJ6D2ZXM · pith_short_16: 4W5AKJ6D2ZXMGDO4 · pith_short_8: 4W5AKJ6D

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/4W5AKJ6D2ZXMGDO4YCPKHAEDLF \
  | 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: e5ba0527c3d66ec30ddcc09ea3808359771789768bfc1c278bec1c7fed0f26a1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8d8a658ce0f6193165021c2047f114fd0531e9566be967a265d4a8bcfe5269fe",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-01-27T13:08:17Z",
    "title_canon_sha256": "bdfe1878913a7ef7210ac4db4c9ca0db33b912df91df7a88f8b19d76af48ae4f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.11371",
    "kind": "arxiv",
    "version": 2
  }
}