Pith Number

pith:MECILYDZ

pith:2021:MECILYDZZTPTF7VBNNRYZAYABR

not attested not anchored not stored refs pending

SimpleX: A Simple and Strong Baseline for Collaborative Filtering

Jieming Zhu, Jinpeng Wang, Kelong Mao, Quanyu Dai, Xiuqiang He, Xi Xiao, Zhenhua Dong

arxiv:2109.12613 v3 · 2021-09-26 · cs.IR · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MECILYDZZTPTF7VBNNRYZAYABR}

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	2026-07-05T07:18:22.149111Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

610485e079ccdf32fea16b638c83000c484c05c3b06ba1cdbb84d786a12f820d

Aliases

arxiv: 2109.12613 · arxiv_version: 2109.12613v3 · doi: 10.48550/arxiv.2109.12613 · pith_short_12: MECILYDZZTPT · pith_short_16: MECILYDZZTPTF7VB · pith_short_8: MECILYDZ

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/MECILYDZZTPTF7VBNNRYZAYABR \
  | 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: 610485e079ccdf32fea16b638c83000c484c05c3b06ba1cdbb84d786a12f820d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9103509795e028a1f6529bac4ffbf855868fc93ffeafa5544553cb95efc2b3d8",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-09-26T14:09:25Z",
    "title_canon_sha256": "05f0529c71e019dc48628ce75c7be3b04f33c55eec247c5356f89564dcd0df19"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.12613",
    "kind": "arxiv",
    "version": 3
  }
}