Pith Number

pith:4BQFR5WY

pith:2013:4BQFR5WYYAJKX2GPSN32I6PYZI

not attested not anchored not stored refs pending

Image Integrity Authentication Scheme Based On Fixed Point Theory

Quansheng Liu, Xingming Sun, Xu Li

arxiv:1308.0679 v1 · 2013-08-03 · cs.CR · 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{4BQFR5WYYAJKX2GPSN32I6PYZI}

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	2026-05-18T03:16:48.538241Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e06058f6d8c012abe8cf9377a479f8ca33e9de371b83fde004718f5293850eb3

Aliases

arxiv: 1308.0679 · arxiv_version: 1308.0679v1 · doi: 10.48550/arxiv.1308.0679 · pith_short_12: 4BQFR5WYYAJK · pith_short_16: 4BQFR5WYYAJKX2GP · pith_short_8: 4BQFR5WY

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/4BQFR5WYYAJKX2GPSN32I6PYZI \
  | 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: e06058f6d8c012abe8cf9377a479f8ca33e9de371b83fde004718f5293850eb3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d1bf290e3aee1918adddf342b4b24815799e9a12d3b76c01afd787c24245178e",
    "cross_cats_sorted": [
      "cs.MM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2013-08-03T10:22:35Z",
    "title_canon_sha256": "852e064196105237abbba8da62ccd7432b93c8c042a6bd918fd8b2ebf1ba7798"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1308.0679",
    "kind": "arxiv",
    "version": 1
  }
}