Pith Number

pith:OJOPGBSZ

pith:2016:OJOPGBSZUU4DH76IW6MLUGBSFL

not attested not anchored not stored refs pending

Accurate Measurements of Free Flight Drag Coefficients with Amateur Doppler Radar

Collin Morris, Elya Courtney, Michael Courtney

arxiv:1608.06500 v1 · 2016-08-23 · physics.pop-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{OJOPGBSZUU4DH76IW6MLUGBSFL}

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	2026-05-18T01:08:13.886625Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

725cf30659a53833ffc8b798ba18322af3cbd4c84b39bb259c6f63094bce2399

Aliases

arxiv: 1608.06500 · arxiv_version: 1608.06500v1 · doi: 10.48550/arxiv.1608.06500 · pith_short_12: OJOPGBSZUU4D · pith_short_16: OJOPGBSZUU4DH76I · pith_short_8: OJOPGBSZ

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/OJOPGBSZUU4DH76IW6MLUGBSFL \
  | 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: 725cf30659a53833ffc8b798ba18322af3cbd4c84b39bb259c6f63094bce2399

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a983d799aed177c7d8174f33e717ecb20c86f659dcc903f613f7e11ff9fc03ba",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.pop-ph",
    "submitted_at": "2016-08-23T13:19:24Z",
    "title_canon_sha256": "04182be1242e48777883c004f8ba790f9f7ce4d0b9106f83dcffa6c2043c86c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.06500",
    "kind": "arxiv",
    "version": 1
  }
}