Pith Number

pith:U6NC2DAR

pith:2015:U6NC2DARCDIGRSNLOAH4SZOVBR

not attested not anchored not stored refs pending

Improved 8-point Approximate DCT for Image and Video Compression Requiring Only 14 Additions

A. Edirisuriya, A. Madanayake, F. M. Bayer, R. J. Cintra, S. Kulasekera, U. S. Potluri

arxiv:1501.02995 v1 · 2015-01-13 · cs.MM · cs.CV · cs.NA · stat.ME

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U6NC2DARCDIGRSNLOAH4SZOVBR}

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	2026-05-18T02:29:30.722416Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a79a2d0c1110d068c9ab700fc965d50c48d600cce0b41cbc3d0b217b26f58a89

Aliases

arxiv: 1501.02995 · arxiv_version: 1501.02995v1 · doi: 10.48550/arxiv.1501.02995 · pith_short_12: U6NC2DARCDIG · pith_short_16: U6NC2DARCDIGRSNL · pith_short_8: U6NC2DAR

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/U6NC2DARCDIGRSNLOAH4SZOVBR \
  | 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: a79a2d0c1110d068c9ab700fc965d50c48d600cce0b41cbc3d0b217b26f58a89

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "443e9c0018eb6f05b3daded8c0748e44c3640b70bff9622738c27d066d51784f",
    "cross_cats_sorted": [
      "cs.CV",
      "cs.NA",
      "stat.ME"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MM",
    "submitted_at": "2015-01-13T13:26:40Z",
    "title_canon_sha256": "3044add8036d5e7c522bf99a88c8bfe2fb37addf647088be9bc5795c3ccfa13f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.02995",
    "kind": "arxiv",
    "version": 1
  }
}