Pith Number

pith:RF64JDDY

pith:2013:RF64JDDYYNJWCRMAFW2ZJEMT7I

not attested not anchored not stored refs pending

Exact-Regenerating Codes between MBR and MSR Points

Toni Ernvall

arxiv:1304.5357 v1 · 2013-04-19 · cs.DC · 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{RF64JDDYYNJWCRMAFW2ZJEMT7I}

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	2026-05-18T02:19:28.788448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

897dc48c78c3536145802db5949193fa354d8ca26fe42e909e8643bb239f2643

Aliases

arxiv: 1304.5357 · arxiv_version: 1304.5357v1 · doi: 10.48550/arxiv.1304.5357 · pith_short_12: RF64JDDYYNJW · pith_short_16: RF64JDDYYNJWCRMA · pith_short_8: RF64JDDY

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/RF64JDDYYNJWCRMAFW2ZJEMT7I \
  | 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: 897dc48c78c3536145802db5949193fa354d8ca26fe42e909e8643bb239f2643

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eeb6176d499add6a969feb437f123b0155b6707b401bd0e24bc39bdaacc694ee",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2013-04-19T09:37:36Z",
    "title_canon_sha256": "24e8c3620fc06ea4405e790f3c7342bccaaa43259b7e6c5aed7dc6db237e650b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.5357",
    "kind": "arxiv",
    "version": 1
  }
}