Pith Number

pith:2P33BUP4

pith:2018:2P33BUP4XKZSIRGUCOIXGDEC3F

not attested not anchored not stored refs pending

An H$\alpha$ Imaging Survey of the Low-surface-brightness Galaxies Selected from the Fall Sky Region of the 40$\%$ ALFALFA \ion{H}{1} Survey

Chaojian Wu, Fan Yang, Fengjie Lei, Hongbin Li, Hong Wu, Juanjuan Ren, Junjie Jin, Man I Lam, Min He, Pinsong Zhao, TianWen Cao, Wei Du, Yinan Zhu, Zhimin Zhou

arxiv:1803.02650 v1 · 2018-03-07 · astro-ph.GA

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

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	2026-05-18T00:20:34.535859Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d3f7b0d1fcbab32444d41391730c82d941b0b11a9c61265a45c68774da1ffc3d

Aliases

arxiv: 1803.02650 · arxiv_version: 1803.02650v1 · doi: 10.48550/arxiv.1803.02650 · pith_short_12: 2P33BUP4XKZS · pith_short_16: 2P33BUP4XKZSIRGU · pith_short_8: 2P33BUP4

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/2P33BUP4XKZSIRGUCOIXGDEC3F \
  | 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: d3f7b0d1fcbab32444d41391730c82d941b0b11a9c61265a45c68774da1ffc3d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a1356089329237d071be24f2e52a16fabd42ee41a6969c36369de2994434bc4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-03-07T13:50:01Z",
    "title_canon_sha256": "44b6dc248e74a1be468f71a62ed86a95fe89bd8e81a69ddd8a9485bbeccb6ffa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.02650",
    "kind": "arxiv",
    "version": 1
  }
}