Pith Number

pith:57WHYIYJ

pith:2016:57WHYIYJI2UJBU6NV2GYF6TZWI

not attested not anchored not stored refs pending

Serendipitous discovery of a projected pair of QSOs separated by 4.5 arcsec on the sky

B. Venemans, C. Ledoux, F. G. Saturni, J.-K. Krogager, J. P. U. Fynbo, K. E. Heintz, M. Arabsalmani, M. Vestergaard, P. M{\o}ller, P. Noterdaeme, S. Geier

arxiv:1604.01361 v2 · 2016-04-05 · astro-ph.HE · 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{57WHYIYJI2UJBU6NV2GYF6TZWI}

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	2026-05-18T01:11:57.558792Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

efec7c230946a890d3cdae8d82fa79b21fe38c2120c9dc6496be52a19647d1cc

Aliases

arxiv: 1604.01361 · arxiv_version: 1604.01361v2 · doi: 10.48550/arxiv.1604.01361 · pith_short_12: 57WHYIYJI2UJ · pith_short_16: 57WHYIYJI2UJBU6N · pith_short_8: 57WHYIYJ

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/57WHYIYJI2UJBU6NV2GYF6TZWI \
  | 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: efec7c230946a890d3cdae8d82fa79b21fe38c2120c9dc6496be52a19647d1cc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3f09111e38821f235a39424495616c509ffed6d8269b1352c4181114a81ab312",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-04-05T18:53:00Z",
    "title_canon_sha256": "a07cf0d48a5636c886d7b87742bd4c06933b4507b5c6fee4e18e2d34ae9ed806"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.01361",
    "kind": "arxiv",
    "version": 2
  }
}