Pith Number

pith:XMN2TUHG

pith:2015:XMN2TUHGJZ4KQM4Z22Y6APD35C

not attested not anchored not stored refs pending

Decentralized Recommender Systems

Guo-jun Qi, Jiayu Zhou, Shiyu Chang, Thomas S. Huang, Xianming Liu, Zhangyang Wang

arxiv:1503.01647 v1 · 2015-03-05 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XMN2TUHGJZ4KQM4Z22Y6APD35C}

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	2026-05-18T02:25:33.208508Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb1ba9d0e64e78a83399d6b1e03c7be884974a6d804dc3c359d532b0f829ae8a

Aliases

arxiv: 1503.01647 · arxiv_version: 1503.01647v1 · doi: 10.48550/arxiv.1503.01647 · pith_short_12: XMN2TUHGJZ4K · pith_short_16: XMN2TUHGJZ4KQM4Z · pith_short_8: XMN2TUHG

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/XMN2TUHGJZ4KQM4Z22Y6APD35C \
  | 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: bb1ba9d0e64e78a83399d6b1e03c7be884974a6d804dc3c359d532b0f829ae8a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4b56e208f5e8a88728d4ba71e400da6a6f0efe249eb4a50b42aea19937048435",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2015-03-05T14:34:02Z",
    "title_canon_sha256": "b0b387ff5c4632ee3c548eb6e1a36acdaafcf0975eb2a3bd309df94cbdcba8e6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.01647",
    "kind": "arxiv",
    "version": 1
  }
}