Pith Number

pith:T75M5PEU

pith:2021:T75M5PEUEIVGN4T5AIBO5BCJ5P

not attested not anchored not stored refs pending

A physics and learning-based transmission-less attenuation compensation method for SPECT

Abhinav K. Jha, Md Ashequr Rahman, Richard Laforest, Thomas Schindler, Zitong Yu

arxiv:2102.05318 v2 · 2021-02-10 · 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{T75M5PEUEIVGN4T5AIBO5BCJ5P}

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	2026-07-05T02:14:33.662739Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9ffacebc94222a66f27d0202ee8449ebe91d5c6a72a418c5af6b60b30e6648ed

Aliases

arxiv: 2102.05318 · arxiv_version: 2102.05318v2 · doi: 10.48550/arxiv.2102.05318 · pith_short_12: T75M5PEUEIVG · pith_short_16: T75M5PEUEIVGN4T5 · pith_short_8: T75M5PEU

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/T75M5PEUEIVGN4T5AIBO5BCJ5P \
  | 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: 9ffacebc94222a66f27d0202ee8449ebe91d5c6a72a418c5af6b60b30e6648ed

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1375dac4fddc5d7c10b791df707897a06c20b678a50cbde1ac200d5b41373c30",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.med-ph",
    "submitted_at": "2021-02-10T08:35:51Z",
    "title_canon_sha256": "25f75f45eba93dce6cf677794e67c39e6ec39c47369559ec8c63045feb93a700"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.05318",
    "kind": "arxiv",
    "version": 2
  }
}