Pith Number

pith:XLP3Y7FP

pith:2023:XLP3Y7FP5KBB3WUBRCL4CWUFGJ

not attested not anchored not stored refs pending

21-cm foreground removal using AI and frequency-difference technique

Feng Shi, Haoxiang Chang, Huanyuan Shan, Jiajun Zhang, Le Zhang, Ming Jiang, Suiping Zhou, Zitong Wang

arxiv:2310.06518 v2 · 2023-10-10 · 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{XLP3Y7FP5KBB3WUBRCL4CWUFGJ}

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	2026-07-05T07:54:51.840529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

badfbc7cafea821dda818897c15a85325203e0fcf18c7641861960a83911006c

Aliases

arxiv: 2310.06518 · arxiv_version: 2310.06518v2 · doi: 10.48550/arxiv.2310.06518 · pith_short_12: XLP3Y7FP5KBB · pith_short_16: XLP3Y7FP5KBB3WUB · pith_short_8: XLP3Y7FP

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/XLP3Y7FP5KBB3WUBRCL4CWUFGJ \
  | 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: badfbc7cafea821dda818897c15a85325203e0fcf18c7641861960a83911006c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f0f919fde3cff19e5838aca112c9b33e2b996ec1c7b6064f3f6f089829bc810f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2023-10-10T11:00:49Z",
    "title_canon_sha256": "c8938558af5a03d8213354d967764401fc2a61a0058dea203d780c867e61766b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2310.06518",
    "kind": "arxiv",
    "version": 2
  }
}