Pith Number

pith:Z7EKGSGE

pith:2018:Z7EKGSGEK75NIOQR7KVKBDQE62

not attested not anchored not stored refs pending

The Discovery of a Gravitationally Lensed Quasar at z = 6.51

Ann Zabludoff, Bram Venemans, Charles R. Keeton, David Thompson, Fabian Walter, Fabio Pacucci, Feige Wang, Fuyan Bian, Ian D. McGreer, Iskren Y. Georgiev, Jiangtao Li, Jinyi Yang, Joseph F. Hennawi, Marco Bonaglia, Minghao Yue, Ran Wang, Rohan Naidu, Sebastian Rabien, Xiaohui Fan, Xue-Bing Wu

arxiv:1810.11924 v1 · 2018-10-29 · 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{Z7EKGSGEK75NIOQR7KVKBDQE62}

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	2026-05-17T23:56:17.287424Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cfc8a348c457fad43a11faaaa08e04f69bbecb921aef1b013d7d3eea9a7e30c8

Aliases

arxiv: 1810.11924 · arxiv_version: 1810.11924v1 · doi: 10.48550/arxiv.1810.11924 · pith_short_12: Z7EKGSGEK75N · pith_short_16: Z7EKGSGEK75NIOQR · pith_short_8: Z7EKGSGE

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/Z7EKGSGEK75NIOQR7KVKBDQE62 \
  | 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: cfc8a348c457fad43a11faaaa08e04f69bbecb921aef1b013d7d3eea9a7e30c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b52d40492dbd5cfcda3df9632b8111be25f3ae8b6780586a5ff9c593c3cdc02",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-29T02:34:57Z",
    "title_canon_sha256": "41bf9f920428e35ae83698ebe363738a0de30e4bf866dfacf03726f84c469004"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.11924",
    "kind": "arxiv",
    "version": 1
  }
}