Pith Number

pith:QYEICOBT

pith:2012:QYEICOBTJQLBJVP25SWZREE6IZ

not attested not anchored not stored refs pending

On Optimal TCM Encoders

Alex Alvarado, Alexandre Graell i Amat, Erik Agrell, Fredrik Brannstrom

arxiv:1210.2107 v2 · 2012-10-07 · 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{QYEICOBTJQLBJVP25SWZREE6IZ}

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	2026-05-18T02:30:01.427647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

86088138334c1614d5faecad98909e46668a67a1939c24e99dad669311b3d76d

Aliases

arxiv: 1210.2107 · arxiv_version: 1210.2107v2 · doi: 10.48550/arxiv.1210.2107 · pith_short_12: QYEICOBTJQLB · pith_short_16: QYEICOBTJQLBJVP2 · pith_short_8: QYEICOBT

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/QYEICOBTJQLBJVP25SWZREE6IZ \
  | 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: 86088138334c1614d5faecad98909e46668a67a1939c24e99dad669311b3d76d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e302d29d2cdac28abfa2da765f33cebe43f0a3c47e078e780610b43b723bd8c4",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2012-10-07T21:25:37Z",
    "title_canon_sha256": "0c4d8f30c31e0b327967b0f0dbd874c81cd2a9380b6820da2d0d49e5b9bc60f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1210.2107",
    "kind": "arxiv",
    "version": 2
  }
}