Pith Number

pith:X4BQHG32

pith:2017:X4BQHG32BYTRAAPQBZF67QL7BW

not attested not anchored not stored refs pending

The Geometry of Large Tundra Lakes Observed in Historical Maps and Satellite Images

Almabrok Essa, Ivan Sudakov, Luke Mander, Ming Gong, Tharanga Kariyawasam

arxiv:1709.02547 v2 · 2017-09-08 · nlin.PS · physics.geo-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{X4BQHG32BYTRAAPQBZF67QL7BW}

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	2026-05-18T00:32:16.144008Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bf03039b7a0e271001f00e4befc17f0d8c56e513b34be65ead2c1a44be992200

Aliases

arxiv: 1709.02547 · arxiv_version: 1709.02547v2 · doi: 10.48550/arxiv.1709.02547 · pith_short_12: X4BQHG32BYTR · pith_short_16: X4BQHG32BYTRAAPQ · pith_short_8: X4BQHG32

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/X4BQHG32BYTRAAPQBZF67QL7BW \
  | 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: bf03039b7a0e271001f00e4befc17f0d8c56e513b34be65ead2c1a44be992200

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "544201afa1511e8e503628f8f6d642d77e52a8ca062570a0e36d1ec07152684a",
    "cross_cats_sorted": [
      "physics.geo-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "nlin.PS",
    "submitted_at": "2017-09-08T05:42:21Z",
    "title_canon_sha256": "5f105b057fad3ac584bc43c891cfc5b11e9f455132a29036a7e4c00d9644e582"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1709.02547",
    "kind": "arxiv",
    "version": 2
  }
}