Pith Number

pith:M4WEYOUC

pith:2017:M4WEYOUCDUVRNEPP6QSJ7RGRSJ

not attested not anchored not stored refs pending

Testing and selecting cosmological models with ultra-compact radio quasars

Jingzhao Qi, Marek Biesiada, Shuo Cao, Xiaogang Zheng, Xiaolei Li, Zong-Hong Zhu

arxiv:1708.08867 v1 · 2017-08-29 · 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{M4WEYOUCDUVRNEPP6QSJ7RGRSJ}

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	2026-05-18T00:26:45.755584Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

672c4c3a821d2b1691eff4249fc4d19257e90db08611ba11f6cbd51089083c06

Aliases

arxiv: 1708.08867 · arxiv_version: 1708.08867v1 · doi: 10.48550/arxiv.1708.08867 · pith_short_12: M4WEYOUCDUVR · pith_short_16: M4WEYOUCDUVRNEPP · pith_short_8: M4WEYOUC

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/M4WEYOUCDUVRNEPP6QSJ7RGRSJ \
  | 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: 672c4c3a821d2b1691eff4249fc4d19257e90db08611ba11f6cbd51089083c06

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7c9239fb6ee45ce21e8c8999a75bfbf85492e635b2ae91d86c663c7600bc1ab7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2017-08-29T16:35:33Z",
    "title_canon_sha256": "726bcabab67c006a90e257e60e46b779236ce36b002f5fc64da170b60a64d9a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.08867",
    "kind": "arxiv",
    "version": 1
  }
}