Pith Number

pith:GC7JOMKC

pith:2019:GC7JOMKCQB2PCCLEYLXMZDM6WH

not attested not anchored not stored refs pending

SeF: A Secure Fountain Architecture for Slashing Storage Costs in Blockchains

Jichan Chung, Kannan Ramchandran, Swanand Kadhe

arxiv:1906.12140 v1 · 2019-06-28 · cs.CR · 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{GC7JOMKCQB2PCCLEYLXMZDM6WH}

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	2026-05-17T23:41:59.167635Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30be9731428074f10964c2eecc8d9eb1d000deeb708cbf1ae73ccb7bb6d0007a

Aliases

arxiv: 1906.12140 · arxiv_version: 1906.12140v1 · doi: 10.48550/arxiv.1906.12140 · pith_short_12: GC7JOMKCQB2P · pith_short_16: GC7JOMKCQB2PCCLE · pith_short_8: GC7JOMKC

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/GC7JOMKCQB2PCCLEYLXMZDM6WH \
  | 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: 30be9731428074f10964c2eecc8d9eb1d000deeb708cbf1ae73ccb7bb6d0007a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c827189efae25a861bbe126fa0596af48401e6fe49a2c1c832cabab49a895b6e",
    "cross_cats_sorted": [
      "cs.DC",
      "cs.IT",
      "math.IT"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-06-28T11:32:33Z",
    "title_canon_sha256": "08fbf137dac71f5206a3d31b53d0128475a3ab1192957630b579d1886ab2f261"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.12140",
    "kind": "arxiv",
    "version": 1
  }
}