Pith Number

pith:S7FFA235

pith:2017:S7FFA235KSWRTTRQHBMCMYBLYF

not attested not anchored not stored refs pending

Discovery of a very Lyman-$\alpha$-luminous quasar at z=6.62

Chorng-Yuan Hwang, Ekaterina Koptelova, Jhen-Kuei Guo, Po-Chieh Yu, Wen-Ping Chen

arxiv:1706.05785 v1 · 2017-06-19 · 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{S7FFA235KSWRTTRQHBMCMYBLYF}

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	2026-05-18T00:42:08.903631Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

97ca506b7d54ad19ce30385826602bc16c672d1c6a81926be87423241578d248

Aliases

arxiv: 1706.05785 · arxiv_version: 1706.05785v1 · doi: 10.48550/arxiv.1706.05785 · pith_short_12: S7FFA235KSWR · pith_short_16: S7FFA235KSWRTTRQ · pith_short_8: S7FFA235

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/S7FFA235KSWRTTRQHBMCMYBLYF \
  | 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: 97ca506b7d54ad19ce30385826602bc16c672d1c6a81926be87423241578d248

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "23f1a6acd62e5d9da4800e534e6ac713357028017edc7b00fa47e99ea42cb92e",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-06-19T04:53:18Z",
    "title_canon_sha256": "eeba999472a0887509988d8fdab886e59cbfd66b486b894a082eb76e7c1c9fff"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.05785",
    "kind": "arxiv",
    "version": 1
  }
}