Pith Number

pith:JOYVX25B

pith:2025:JOYVX25BXPCY6EQJDAWXOUXJ2X

not attested not anchored not stored refs pending

Testing Extended Theories of Gravity via Black Hole Photon Rings

Meirong Tang, Qiao Yue, Zhaoyi Xu

arxiv:2505.21314 v1 · 2025-05-27 · gr-qc

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JOYVX25BXPCY6EQJDAWXOUXJ2X}

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	2026-07-05T11:10:40.011207Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4bb15beba1bbc58f1209182d7752e9d5ccb721ba15fa7c59a52ba2c72a9e9d1a

Aliases

arxiv: 2505.21314 · arxiv_version: 2505.21314v1 · doi: 10.48550/arxiv.2505.21314 · pith_short_12: JOYVX25BXPCY · pith_short_16: JOYVX25BXPCY6EQJ · pith_short_8: JOYVX25B

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/JOYVX25BXPCY6EQJDAWXOUXJ2X \
  | 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: 4bb15beba1bbc58f1209182d7752e9d5ccb721ba15fa7c59a52ba2c72a9e9d1a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a2cdf0d406d134470ccd33d0250e3e2f9b80a2a4a6daa8285680dc99314c597b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-05-27T15:12:56Z",
    "title_canon_sha256": "a77a5e03931b9e3d91f8bf15d8f9523e29cdc97a2c5426bc8cbcd24c53bc9c09"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2505.21314",
    "kind": "arxiv",
    "version": 1
  }
}