Pith Number

pith:SPOF34FN

pith:2017:SPOF34FNDHVQEEKX3MLFJTNZC2

not attested not anchored not stored refs pending

Optimized Pre-Compensating Compression

Alfred M. Bruckstein, Michael Elad, Yehuda Dar

arxiv:1711.07901 v2 · 2017-11-21 · cs.MM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SPOF34FNDHVQEEKX3MLFJTNZC2}

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	2026-05-18T00:09:30.220835Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93dc5df0ad19eb021157db1654cdb916b3098e32ecebf24a8e97688b44730bba

Aliases

arxiv: 1711.07901 · arxiv_version: 1711.07901v2 · doi: 10.48550/arxiv.1711.07901 · pith_short_12: SPOF34FNDHVQ · pith_short_16: SPOF34FNDHVQEEKX · pith_short_8: SPOF34FN

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/SPOF34FNDHVQEEKX3MLFJTNZC2 \
  | 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: 93dc5df0ad19eb021157db1654cdb916b3098e32ecebf24a8e97688b44730bba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f3444580f9657438899c094e680e5c23b7ef0246b33f03a3533f367d29c748b2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MM",
    "submitted_at": "2017-11-21T16:47:11Z",
    "title_canon_sha256": "48e41e9e76713265105401df25aec650cb8e9d4578fd1f863b007a7bfcc9d7b0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1711.07901",
    "kind": "arxiv",
    "version": 2
  }
}