Pith Number

pith:SPO5JLNZ

pith:2026:SPO5JLNZN7KVW52ZOE5NYDEHSD

not attested not anchored not stored refs pending

The FAST All Sky HI Survey DR2: the FASHI Catalog and the HI Mass Function

Cheng cheng, Chuan-Peng Zhang (NAOC), FAST Collaboration, Hong Guo, Jie Wang, Jing Wang, Jin-Long Xu, Ming Zhu, Nai-Ping Yu, Peng Jiang, Xiao-Lan Liu

arxiv:2606.31539 v1 · 2026-06-30 · astro-ph.GA · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SPO5JLNZN7KVW52ZOE5NYDEHSD}

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	2026-07-01T01:18:06.517542Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93ddd4adb96fd55b7759713adc0c8790e285d1395e3d3f66867f7f2dd25f088c

Aliases

arxiv: 2606.31539 · arxiv_version: 2606.31539v1 · doi: 10.48550/arxiv.2606.31539 · pith_short_12: SPO5JLNZN7KV · pith_short_16: SPO5JLNZN7KVW52Z · pith_short_8: SPO5JLNZ

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/SPO5JLNZN7KVW52ZOE5NYDEHSD \
  | 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: 93ddd4adb96fd55b7759713adc0c8790e285d1395e3d3f66867f7f2dd25f088c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "93a86b7331c3075b4e5d3b5033127f6bcf01cd299d026090976a4dc10199bb55",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-06-30T11:52:27Z",
    "title_canon_sha256": "852845d0bdc5ad45cf88707937f622b383fd70df11c071cf3e4eedc32ac4d585"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.31539",
    "kind": "arxiv",
    "version": 1
  }
}