Pith Number

pith:TIPOH2OO

pith:2018:TIPOH2OOZHXQUGOP4FRGQD3NOT

not attested not anchored not stored refs pending

Discovery of the most ultra-luminous QSO using Gaia, SkyMapper and WISE

Brian P. Schmidt, Christian Wolf, Christopher A. Onken, Fuyan Bian, John L. Tonry, Noura Alonzi, Patrick Tisserand, Wei Jeat Hon

arxiv:1805.04317 v1 · 2018-05-11 · 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{TIPOH2OOZHXQUGOP4FRGQD3NOT}

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	2026-05-18T00:11:33.864722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a1ee3e9cec9ef0a19cfe162680f6d74e42f53f46b01a3b52d9d4ee4a6d00838

Aliases

arxiv: 1805.04317 · arxiv_version: 1805.04317v1 · doi: 10.48550/arxiv.1805.04317 · pith_short_12: TIPOH2OOZHXQ · pith_short_16: TIPOH2OOZHXQUGOP · pith_short_8: TIPOH2OO

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/TIPOH2OOZHXQUGOP4FRGQD3NOT \
  | 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: 9a1ee3e9cec9ef0a19cfe162680f6d74e42f53f46b01a3b52d9d4ee4a6d00838

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ae41cae0ff724d3ef611ab37de5a434306fd8c86dbf1b2e189a9ee13394d2f97",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-05-11T10:50:11Z",
    "title_canon_sha256": "58838c8f38cb715d82597eea03bffce079875a88d58df88a45eaeb1a6858b4eb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.04317",
    "kind": "arxiv",
    "version": 1
  }
}