Pith Number

pith:42LD7MCS

pith:2015:42LD7MCSQTWURM63YWNANJ73SE

not attested not anchored not stored refs pending

On the Dirty Paper Channel with Fast Fading Dirt

Shlomo Shamai Shitz, Stefano Rini

arxiv:1501.04263 v2 · 2015-01-18 · 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{42LD7MCSQTWURM63YWNANJ73SE}

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	2026-05-18T01:49:55.771800Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6963fb05284ed48b3dbc59a06a7fb9123cb39a147adc23e70381274b689dd68

Aliases

arxiv: 1501.04263 · arxiv_version: 1501.04263v2 · doi: 10.48550/arxiv.1501.04263 · pith_short_12: 42LD7MCSQTWU · pith_short_16: 42LD7MCSQTWURM63 · pith_short_8: 42LD7MCS

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/42LD7MCSQTWURM63YWNANJ73SE \
  | 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: e6963fb05284ed48b3dbc59a06a7fb9123cb39a147adc23e70381274b689dd68

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "570b0dabee2cf3e4cf4f29dd2cb0c4026c51b31b375ba90f7a64c6b1523f2658",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2015-01-18T04:24:47Z",
    "title_canon_sha256": "1e9d536a639b6d1d1e4ed63d6b1bd1fc6b15f7772045cc5817b8ab35f217e600"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.04263",
    "kind": "arxiv",
    "version": 2
  }
}