Pith Number

pith:NT6QYNCQ

pith:2025:NT6QYNCQI4TV2JDFTX2BT6U2SR

not attested not anchored not stored refs pending

A User-Friendly Python Interface for the Numerical Relativity Code AMSS-NCKU

Chen-Kai Qiao, Yi Zheng, Zhou-Jian Cao

arxiv:2509.21652 v5 · 2025-09-25 · gr-qc · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NT6QYNCQI4TV2JDFTX2BT6U2SR}

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	2026-06-24T00:14:21.080329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cfd0c345047275d24659df419fa9a94598ba832de8bce239f040ee760255ec4

Aliases

arxiv: 2509.21652 · arxiv_version: 2509.21652v5 · doi: 10.48550/arxiv.2509.21652 · pith_short_12: NT6QYNCQI4TV · pith_short_16: NT6QYNCQI4TV2JDF · pith_short_8: NT6QYNCQ

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/NT6QYNCQI4TV2JDFTX2BT6U2SR \
  | 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: 6cfd0c345047275d24659df419fa9a94598ba832de8bce239f040ee760255ec4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb0d577fcc9e068e6799a8e6c6e76b56aef285eee24999b4968a39a30c6f6f2f",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "gr-qc",
    "submitted_at": "2025-09-25T22:12:52Z",
    "title_canon_sha256": "3375f09975d4d89a07acff7f958512e7dbf42a825b7e9c406d62e88adb740c2d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.21652",
    "kind": "arxiv",
    "version": 5
  }
}