Pith Number

pith:HMSY2OAU

pith:2021:HMSY2OAU3KGDGCORL4XUSNVDOI

not attested not anchored not stored refs pending

Testing gravitational redshift based on microwave frequency links onboard China Space Station

Abdelrahim Ruby, An Ning, Chenghui Cai, Kuangchao Wu, Lei Wang, Lihong Li, Mostafa Ashry, Pengfei Zhang, Rui Xu, Wei Xu, Wenbin Shen, Xiao Sun, Yifan Wu, Ziyu Shen

arxiv:2112.02759 v3 · 2021-12-06 · astro-ph.IM · gr-qc · physics.geo-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HMSY2OAU3KGDGCORL4XUSNVDOI}

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	2026-07-05T04:17:38.032174Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3b258d3814da8c3309d15f2f4936a3721aa0b7e6653e89d4fa263418a8c36103

Aliases

arxiv: 2112.02759 · arxiv_version: 2112.02759v3 · doi: 10.48550/arxiv.2112.02759 · pith_short_12: HMSY2OAU3KGD · pith_short_16: HMSY2OAU3KGDGCOR · pith_short_8: HMSY2OAU

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/HMSY2OAU3KGDGCORL4XUSNVDOI \
  | 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: 3b258d3814da8c3309d15f2f4936a3721aa0b7e6653e89d4fa263418a8c36103

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb916c7b70557e8ca02d45789dc87b1de6e2284dfc635debb14029cbc2d741b8",
    "cross_cats_sorted": [
      "gr-qc",
      "physics.geo-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-12-06T03:22:36Z",
    "title_canon_sha256": "b37fb411289877031e754e236144280f5b415cd9f78ed24e4dbd0d95f813c991"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.02759",
    "kind": "arxiv",
    "version": 3
  }
}