Pith Number

pith:YH2CF3BM

pith:2017:YH2CF3BMJ6RDFTQXE5CI62PNA3

not attested not anchored not stored refs pending

Calculating groundwater response times for flow in heterogeneous porous media

Matthew J Simpson

arxiv:1707.00369 v2 · 2017-07-02 · 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{YH2CF3BMJ6RDFTQXE5CI62PNA3}

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	2026-05-18T00:32:20.357751Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c1f422ec2c4fa232ce1727448f69ed06d9b4a04858d787636935fc568f6c0df8

Aliases

arxiv: 1707.00369 · arxiv_version: 1707.00369v2 · doi: 10.48550/arxiv.1707.00369 · pith_short_12: YH2CF3BMJ6RD · pith_short_16: YH2CF3BMJ6RDFTQX · pith_short_8: YH2CF3BM

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/YH2CF3BMJ6RDFTQXE5CI62PNA3 \
  | 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: c1f422ec2c4fa232ce1727448f69ed06d9b4a04858d787636935fc568f6c0df8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79de6d69ec01991498e8e5fca6c4116374c8429f960752408108202b4bb9295a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.flu-dyn",
    "submitted_at": "2017-07-02T23:20:50Z",
    "title_canon_sha256": "bb534b2fcbce16a67b366a02275b57bc4cfd53e98b3b30e1bf383c9b92c3c078"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.00369",
    "kind": "arxiv",
    "version": 2
  }
}