Pith Number

pith:R7T3L4TP

pith:2021:R7T3L4TP2YOCAK6WD6YGHBA5YR

not attested not anchored not stored refs pending

A single-camera, 3D scanning velocimetry system for quantifying active particle aggregations

Isabel A. Houghton, John O. Dabiri, Matt K. Fu

arxiv:2102.05787 v1 · 2021-02-11 · physics.flu-dyn

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{R7T3L4TP2YOCAK6WD6YGHBA5YR}

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	2026-07-05T03:02:45.892867Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8fe7b5f26fd61c202bd61fb063841dc44f59c7abc668d3c2f831133eca649e91

Aliases

arxiv: 2102.05787 · arxiv_version: 2102.05787v1 · doi: 10.48550/arxiv.2102.05787 · pith_short_12: R7T3L4TP2YOC · pith_short_16: R7T3L4TP2YOCAK6W · pith_short_8: R7T3L4TP

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/R7T3L4TP2YOCAK6WD6YGHBA5YR \
  | 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: 8fe7b5f26fd61c202bd61fb063841dc44f59c7abc668d3c2f831133eca649e91

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c62582a1ef518fb0b9476a81b6d4846bf230f67b0a5d4a7e250e193cc635c320",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2021-02-11T00:42:13Z",
    "title_canon_sha256": "f084d8cbe3da8c25c52e973a6c676076fe2cbe62480c885ac7874235680dabd3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.05787",
    "kind": "arxiv",
    "version": 1
  }
}