Pith Number

pith:2BHQAOLP

pith:2019:2BHQAOLPG4XEBRFVA7AUQMX4E2

not attested not anchored not stored refs pending

The Design and Implementation of a ROACH2+GPU based Correlator on the Tianlai Dish Array

Chenhui Niu, Dan Werthimer, David MacMahon, Fengquan Wu, Guillaume Shippee, Haijun Tian, Jixia Li, Qunxiong Wang, Xiaoping Zheng, Xuelei Chen

arxiv:1904.07778 v1 · 2019-04-16 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2BHQAOLPG4XEBRFVA7AUQMX4E2}

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	2026-05-17T23:39:54.182228Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d04f00396f372e40c4b507c14832fc26900cb5d213c3e3a4d4855b39e44fe182

Aliases

arxiv: 1904.07778 · arxiv_version: 1904.07778v1 · doi: 10.48550/arxiv.1904.07778 · pith_short_12: 2BHQAOLPG4XE · pith_short_16: 2BHQAOLPG4XEBRFV · pith_short_8: 2BHQAOLP

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/2BHQAOLPG4XEBRFVA7AUQMX4E2 \
  | 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: d04f00396f372e40c4b507c14832fc26900cb5d213c3e3a4d4855b39e44fe182

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5617d40f711b169b6465432473d099de2eff8347f84f2e9999f3f8e2e6421a2c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-04-16T15:56:34Z",
    "title_canon_sha256": "2ec79782449f576c1b564fb1c2ddd55d3b622bcff27abcbcbbc55f4af00cc02f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.07778",
    "kind": "arxiv",
    "version": 1
  }
}