Pith Number

pith:B2QNYDI2

pith:2009:B2QNYDI2RKYYR56J5X2NGXDFB3

not attested not anchored not stored refs pending

Bits About the Channel: Multi-round Protocols for Two-way Fading Channels

Ashutosh Sabharwal, Vaneet Aggarwal

arxiv:0909.1011 v1 · 2009-09-05 · 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{B2QNYDI2RKYYR56J5X2NGXDFB3}

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	2026-05-18T02:47:51.463533Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ea0dc0d1a8ab188f7c9edf4d35c650ed53c617f3fc180c10d873e7f164d4ada

Aliases

arxiv: 0909.1011 · arxiv_version: 0909.1011v1 · doi: 10.48550/arxiv.0909.1011 · pith_short_12: B2QNYDI2RKYY · pith_short_16: B2QNYDI2RKYYR56J · pith_short_8: B2QNYDI2

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/B2QNYDI2RKYYR56J5X2NGXDFB3 \
  | 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: 0ea0dc0d1a8ab188f7c9edf4d35c650ed53c617f3fc180c10d873e7f164d4ada

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a1b370c172799a7957b0fd6f1ae83f6255004602e9dad6e39c78fa15694b0cd0",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2009-09-05T09:35:25Z",
    "title_canon_sha256": "6b5d1eb949214d244b6c10b6b423ef655511527d2622136d8776e627565afa3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.1011",
    "kind": "arxiv",
    "version": 1
  }
}