Pith Number

pith:T53GDQAU

pith:2019:T53GDQAU6IY7MZS7ZGZH2VGY65

not attested not anchored not stored refs pending

Study on the spectral reconstruction of typical surface types based on spectral library and principal component analysis

Chi Xu, Donghui Li, Hua Xu, Weizhen Hou, Yan Ma, Yilan Mao, Zhengqiang Li

arxiv:1906.07563 v1 · 2019-06-15 · eess.IV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T53GDQAU6IY7MZS7ZGZH2VGY65}

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	2026-05-17T23:43:07.522268Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9f7661c014f231f6665fc9b27d54d8f7492b6d506bafb99ef66e6db88cdfe945

Aliases

arxiv: 1906.07563 · arxiv_version: 1906.07563v1 · doi: 10.48550/arxiv.1906.07563 · pith_short_12: T53GDQAU6IY7 · pith_short_16: T53GDQAU6IY7MZS7 · pith_short_8: T53GDQAU

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/T53GDQAU6IY7MZS7ZGZH2VGY65 \
  | 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: 9f7661c014f231f6665fc9b27d54d8f7492b6d506bafb99ef66e6db88cdfe945

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4ec7528060ea803f01e016f5a550b043defe8ad42b1976c177a6012a9f536aac",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.IV",
    "submitted_at": "2019-06-15T16:01:49Z",
    "title_canon_sha256": "f000592a2efe0330c67dd7315640ba10742ac807472a28a5a956e067a836f446"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.07563",
    "kind": "arxiv",
    "version": 1
  }
}