Pith Number

pith:MJFEU5QF

pith:2015:MJFEU5QFYDK7DXA2A2U6DCXUNJ

not attested not anchored not stored refs pending

An indirect transmission measurement-based spectrum estimation method for computed tomography

Kai Niu, Kevin Royalty, Sebastian Schafer, Wei Zhao

arxiv:1503.02047 v1 · 2015-02-28 · 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{MJFEU5QFYDK7DXA2A2U6DCXUNJ}

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	2026-05-18T02:25:26.985204Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

624a4a7605c0d5f1dc1a06a9e18af46a4a68afb9de171065b5fa191c350050c8

Aliases

arxiv: 1503.02047 · arxiv_version: 1503.02047v1 · doi: 10.48550/arxiv.1503.02047 · pith_short_12: MJFEU5QFYDK7 · pith_short_16: MJFEU5QFYDK7DXA2 · pith_short_8: MJFEU5QF

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/MJFEU5QFYDK7DXA2A2U6DCXUNJ \
  | 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: 624a4a7605c0d5f1dc1a06a9e18af46a4a68afb9de171065b5fa191c350050c8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "657235aa2d0909d34aca40ec065387c52291755b3b437f665a7b727986d6e893",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2015-02-28T01:27:29Z",
    "title_canon_sha256": "77651efce81c14e4378ecf81aafbfb391cb295cf7db4eaffa61e16d34191ff9d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1503.02047",
    "kind": "arxiv",
    "version": 1
  }
}