Pith Number

pith:QJCOL7HW

pith:2026:QJCOL7HWW6V2RCH4X4SPCCXM3B

not attested not anchored not stored refs pending

Testing the cosmological principle with quasars

Cheng cheng, Shuangnan Chen, Sufen Guo, Xiaofeng Yang, Xiaolong He, Xuwei Zhang, Yangjun Shi, Yunliang Ren

arxiv:2606.00551 v1 · 2026-05-30 · 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{QJCOL7HWW6V2RCH4X4SPCCXM3B}

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	2026-06-02T01:03:57.972923Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8244e5fcf6b7aba888fcbf24f10aecd87c7618c60441084e8992108eacf6ea24

Aliases

arxiv: 2606.00551 · arxiv_version: 2606.00551v1 · doi: 10.48550/arxiv.2606.00551 · pith_short_12: QJCOL7HWW6V2 · pith_short_16: QJCOL7HWW6V2RCH4 · pith_short_8: QJCOL7HW

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/QJCOL7HWW6V2RCH4X4SPCCXM3B \
  | 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: 8244e5fcf6b7aba888fcbf24f10aecd87c7618c60441084e8992108eacf6ea24

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "85f82b4ac5ce41eedf45272b6aade9a6a3beac44d27191cef93638e2d4b4497b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2026-05-30T05:53:51Z",
    "title_canon_sha256": "0773aa8218b8e256b59b1d613732622cd5925ae0c64fd94d5358a9e6cd433e90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.00551",
    "kind": "arxiv",
    "version": 1
  }
}