Pith Number

pith:CCDXQMWR

pith:2014:CCDXQMWRBVC7W32DMFQC7NK7KF

not attested not anchored not stored refs pending

Cramer Rao Lower Bound for Underwater Range Estimation with Noisy Sound Speed Profile

Geert Leus, Hamid Ramezani, Raj Thilak Rajan

arxiv:1404.7313 v1 · 2014-04-29 · 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{CCDXQMWRBVC7W32DMFQC7NK7KF}

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	2026-05-18T02:52:56.889848Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10877832d10d45fb6f4361602fb55f515096055f5dc4d20533c23a59eb2b1a9c

Aliases

arxiv: 1404.7313 · arxiv_version: 1404.7313v1 · doi: 10.48550/arxiv.1404.7313 · pith_short_12: CCDXQMWRBVC7 · pith_short_16: CCDXQMWRBVC7W32D · pith_short_8: CCDXQMWR

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/CCDXQMWRBVC7W32DMFQC7NK7KF \
  | 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: 10877832d10d45fb6f4361602fb55f515096055f5dc4d20533c23a59eb2b1a9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "12edff685385cb9298d016d2c3fefc3dff34006322ce43817bd8314bcbdc4c6f",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2014-04-29T11:25:18Z",
    "title_canon_sha256": "faa95dd48765bd1407d2e645dcb2e5bd316363e789a503233d23462a3fc8547b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1404.7313",
    "kind": "arxiv",
    "version": 1
  }
}