Pith Number

pith:PNG7T5KJ

pith:2017:PNG7T5KJMVSOTEQC3IUI5E7XQG

not attested not anchored not stored refs pending

The Magic Barrier Revisited: Accessing Natural Limitations of Recommender Assessment

Kevin Jasberg, Sergej Sizov

arxiv:1704.05841 v1 · 2017-04-19 · cs.HC · 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{PNG7T5KJMVSOTEQC3IUI5E7XQG}

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	2026-05-18T00:46:03.874352Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7b4df9f5496564e99202da288e93f7819c18ff8bb47376e27271912a56278cf2

Aliases

arxiv: 1704.05841 · arxiv_version: 1704.05841v1 · doi: 10.48550/arxiv.1704.05841 · pith_short_12: PNG7T5KJMVSO · pith_short_16: PNG7T5KJMVSOTEQC · pith_short_8: PNG7T5KJ

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/PNG7T5KJMVSOTEQC3IUI5E7XQG \
  | 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: 7b4df9f5496564e99202da288e93f7819c18ff8bb47376e27271912a56278cf2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12fcdf6406cde2810f2cba0f05c7b20f96e46b53baccc777e2d31d227a45f731",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2017-04-19T16:57:25Z",
    "title_canon_sha256": "56b6bdabc3f388f3674b03f84f44c459c8b6b87e24d7f2559f40e2d05366cf63"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1704.05841",
    "kind": "arxiv",
    "version": 1
  }
}