Pith Number

pith:OVEKRWZF

pith:2013:OVEKRWZFZPFEDY3UUX73HOAS7G

not attested not anchored not stored refs pending

On block coherence of frames

Andrew Thompson, Robert Calderbank, Yao Xie

arxiv:1307.7544 v4 · 2013-07-29 · 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{OVEKRWZFZPFEDY3UUX73HOAS7G}

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	2026-05-18T02:58:23.464899Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7548a8db25cbca41e374a5ffb3b812f9845ca4dda1d61bdba6d5a9e0a1775107

Aliases

arxiv: 1307.7544 · arxiv_version: 1307.7544v4 · doi: 10.48550/arxiv.1307.7544 · pith_short_12: OVEKRWZFZPFE · pith_short_16: OVEKRWZFZPFEDY3U · pith_short_8: OVEKRWZF

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/OVEKRWZFZPFEDY3UUX73HOAS7G \
  | 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: 7548a8db25cbca41e374a5ffb3b812f9845ca4dda1d61bdba6d5a9e0a1775107

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "062e35067feaaf18c0cc5178e4fdfeb59661aa0bc498bb919cc57ae7bf5fe05f",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2013-07-29T11:23:25Z",
    "title_canon_sha256": "daff159d899470b9bb43d06a5d8b98e7669d1b4a4fec0be3855124de531c24f8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.7544",
    "kind": "arxiv",
    "version": 4
  }
}