Pith Number

pith:M7LTQ7HM

pith:2014:M7LTQ7HM66RPEDJ2F3TKWMR2PX

not attested not anchored not stored refs pending

Irregular Fractional Repetition Code Optimization for Heterogeneous Cloud Storage

Chi Wan Sung, Quan Yu, Terence H. Chan

arxiv:1403.7720 v1 · 2014-03-30 · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{M7LTQ7HM66RPEDJ2F3TKWMR2PX}

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	2026-05-18T00:57:52.036189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

67d7387cecf7a2f20d3a2ee6ab323a7ddd2c0337c012f6f6fc88d98a1d996bfb

Aliases

arxiv: 1403.7720 · arxiv_version: 1403.7720v1 · doi: 10.48550/arxiv.1403.7720 · pith_short_12: M7LTQ7HM66RP · pith_short_16: M7LTQ7HM66RPEDJ2 · pith_short_8: M7LTQ7HM

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/M7LTQ7HM66RPEDJ2F3TKWMR2PX \
  | 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: 67d7387cecf7a2f20d3a2ee6ab323a7ddd2c0337c012f6f6fc88d98a1d996bfb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ea2da7056b03007f6285ea6828a6c7798e3156e48fdd42ef880e1dc64fa11c41",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2014-03-30T09:00:51Z",
    "title_canon_sha256": "55ffbe67a5e1812448701eb07b3af63a3c8ee96252c6c8a97f26f3b655f617f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1403.7720",
    "kind": "arxiv",
    "version": 1
  }
}