Pith Number

pith:Q7ZT3SOJ

pith:2016:Q7ZT3SOJTTAP6VFN5WHGZPZQ3R

not attested not anchored not stored refs pending

On Content-Based Recommendation and User Privacy in Social-Tagging Systems

David Rebollo-Monedero, Javier Parra-Arnau, Jordi Forn\'e, Silvia Puglisi

arxiv:1605.06538 v1 · 2016-05-20 · cs.IR · cs.CR · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{Q7ZT3SOJTTAP6VFN5WHGZPZQ3R}

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	2026-05-18T01:14:11.931963Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

87f33dc9c99cc0ff54aded8e6cbf30dc417c9c4ca7e24b131a8454f1dbcd70ec

Aliases

arxiv: 1605.06538 · arxiv_version: 1605.06538v1 · doi: 10.48550/arxiv.1605.06538 · pith_short_12: Q7ZT3SOJTTAP · pith_short_16: Q7ZT3SOJTTAP6VFN · pith_short_8: Q7ZT3SOJ

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/Q7ZT3SOJTTAP6VFN5WHGZPZQ3R \
  | 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: 87f33dc9c99cc0ff54aded8e6cbf30dc417c9c4ca7e24b131a8454f1dbcd70ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "760de7b1c02818c7450bf14850c364dd612d56265c7a9ee588df0d2de0a54abe",
    "cross_cats_sorted": [
      "cs.CR",
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2016-05-20T21:00:50Z",
    "title_canon_sha256": "74d3b5238667e53d63a814e4d613d9db6e2d9e1f534bcb3bddbc300d673bdebc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1605.06538",
    "kind": "arxiv",
    "version": 1
  }
}