Pith Number

pith:PCFRLZMW

pith:2021:PCFRLZMWVPXBDQMHWUDAUUGTWX

not attested not anchored not stored refs pending

Learning to automate cryo-electron microscopy data collection with Ptolemy

Alex J. Noble, Anchi Cheng, Paul T. Kim, Tristan Bepler

arxiv:2112.01534 v2 · 2021-12-01 · eess.IV · cs.CV · q-bio.QM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PCFRLZMWVPXBDQMHWUDAUUGTWX}

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	2026-07-05T03:48:47.689637Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

788b15e596abee11c187b5060a50d3b5eecca1f532042c75224a330236b2aef6

Aliases

arxiv: 2112.01534 · arxiv_version: 2112.01534v2 · doi: 10.48550/arxiv.2112.01534 · pith_short_12: PCFRLZMWVPXB · pith_short_16: PCFRLZMWVPXBDQMH · pith_short_8: PCFRLZMW

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/PCFRLZMWVPXBDQMHWUDAUUGTWX \
  | 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: 788b15e596abee11c187b5060a50d3b5eecca1f532042c75224a330236b2aef6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "304e879d327026c59483a4397d763044eb83379cf749eaf8ad06d40d4ddcec7e",
    "cross_cats_sorted": [
      "cs.CV",
      "q-bio.QM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2021-12-01T22:39:28Z",
    "title_canon_sha256": "7c5eb5c4f85cc54659cf16c7285079c350a1bcb7eefd89e5a728d6c3c82d1543"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.01534",
    "kind": "arxiv",
    "version": 2
  }
}