Pith Number

pith:6J2QZHR2

pith:2019:6J2QZHR2RHDMOJM6WUFUXYDCER

not attested not anchored not stored refs pending

An improved physics model for multi-material identification in photon counting CT

Guohua Cao, Olga V. Pen, Xu Dong, Zhicheng Zhang

arxiv:1902.03360 v1 · 2019-02-09 · physics.med-ph

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6J2QZHR2RHDMOJM6WUFUXYDCER}

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	2026-05-17T23:54:21.102605Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2750c9e3a89c6c7259eb50b4be06224698c3b42a65fd5ab18f0320394e226fd

Aliases

arxiv: 1902.03360 · arxiv_version: 1902.03360v1 · doi: 10.48550/arxiv.1902.03360 · pith_short_12: 6J2QZHR2RHDM · pith_short_16: 6J2QZHR2RHDMOJM6 · pith_short_8: 6J2QZHR2

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/6J2QZHR2RHDMOJM6WUFUXYDCER \
  | 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: f2750c9e3a89c6c7259eb50b4be06224698c3b42a65fd5ab18f0320394e226fd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cb29ea177a1062f011d5320e5a2cd505fcd9bbc350ebc629c83177905d5b869b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2019-02-09T02:39:45Z",
    "title_canon_sha256": "669683f7258288162044ce588e32039241aeb1aff3df324606a4cb2b70edf1a9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.03360",
    "kind": "arxiv",
    "version": 1
  }
}