Pith Number

pith:EY6RHBJU

pith:2014:EY6RHBJUIVAZPZYEUZSZJCNQCK

not attested not anchored not stored refs pending

X-ray observation of ULAS J1120+0641, the most distant quasar at z=7.08

A. Caccianiga, A. Moretti, C. Vignali, L. Ballo, P. Severgnini, R. Della Ceca, R.Gilli, R. Salvaterra, V. Braito

arxiv:1401.7223 v2 · 2014-01-28 · 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{EY6RHBJUIVAZPZYEUZSZJCNQCK}

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	2026-05-18T01:45:11.610103Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

263d138534454197e704a6659489b012a2d750e48d2e834f48253e3ca23e4373

Aliases

arxiv: 1401.7223 · arxiv_version: 1401.7223v2 · doi: 10.48550/arxiv.1401.7223 · pith_short_12: EY6RHBJUIVAZ · pith_short_16: EY6RHBJUIVAZPZYE · pith_short_8: EY6RHBJU

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/EY6RHBJUIVAZPZYEUZSZJCNQCK \
  | 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: 263d138534454197e704a6659489b012a2d750e48d2e834f48253e3ca23e4373

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf716eb612f22ffd006f55181d1999104ff7bb6aec75d1c1672e4a18006a3775",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2014-01-28T15:36:43Z",
    "title_canon_sha256": "18267024599bedb9f9c3071e39b760901bbc53c693b6548e420e70ba68a1a28c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.7223",
    "kind": "arxiv",
    "version": 2
  }
}