Pith Number

pith:TCPSHERD

pith:2018:TCPSHERDTARVRP77DDKPCAZK5Y

not attested not anchored not stored refs pending

WG021416.37-210535.3, a quadruply lensed quasar in three public surveys

Adriano Agnello

arxiv:1805.10296 v1 · 2018-05-25 · astro-ph.GA · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TCPSHERDTARVRP77DDKPCAZK5Y}

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	2026-05-18T00:14:53.008581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

989f239223982358bfff18d4f1032aee315d13d779416764a05521a4203840fa

Aliases

arxiv: 1805.10296 · arxiv_version: 1805.10296v1 · doi: 10.48550/arxiv.1805.10296 · pith_short_12: TCPSHERDTARV · pith_short_16: TCPSHERDTARVRP77 · pith_short_8: TCPSHERD

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/TCPSHERDTARVRP77DDKPCAZK5Y \
  | 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: 989f239223982358bfff18d4f1032aee315d13d779416764a05521a4203840fa

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd0c33bb9f9b17cb058aea81046ba3d78edc4764525b119bde6a3cd0b8b56b5b",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-25T18:00:08Z",
    "title_canon_sha256": "848e251c4bb3c6a1b40b72ba1cb2e662274a131222206c4f01584f2745a4dc39"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.10296",
    "kind": "arxiv",
    "version": 1
  }
}