Pith Number

pith:TWWSFC6N

pith:2018:TWWSFC6NK2VEE4F32RD2XUCTYC

not attested not anchored not stored refs pending

Static-Memory-Hard Functions and Nonlinear Space-Time Tradeoffs via Pebbling

Quanquan C. Liu, Sunoo Park, Thaddeus Dryja

arxiv:1802.07433 v2 · 2018-02-21 · cs.CR · cs.CC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{TWWSFC6NK2VEE4F32RD2XUCTYC}

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	2026-05-18T00:21:34.153125Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9dad228bcd56aa4270bbd447abd053c08164f5511ad34fd08e35a278f6446a69

Aliases

arxiv: 1802.07433 · arxiv_version: 1802.07433v2 · doi: 10.48550/arxiv.1802.07433 · pith_short_12: TWWSFC6NK2VE · pith_short_16: TWWSFC6NK2VEE4F3 · pith_short_8: TWWSFC6N

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/TWWSFC6NK2VEE4F32RD2XUCTYC \
  | 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: 9dad228bcd56aa4270bbd447abd053c08164f5511ad34fd08e35a278f6446a69

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "931a766a5d4daf7801d33c934abd0eb305289e8cad2e6ccae1d7ed8683147dd5",
    "cross_cats_sorted": [
      "cs.CC"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2018-02-21T06:11:19Z",
    "title_canon_sha256": "9f0b5553b8ca0bcb9d7d5cdf92dedeb66de02adcc549b8fca3d49085aa59928b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07433",
    "kind": "arxiv",
    "version": 2
  }
}