Pith Number

pith:BX3RG5BP

pith:2018:BX3RG5BPBYCX3FIEQ42PBGWB5F

not attested not anchored not stored refs pending

Location, Location, Location: Exploring Amazon EC2 Spot Instance Pricing Across Geographical Regions - Extended Version

Adam Barker, Nnamdi Ekwe-Ekwe

arxiv:1807.10507 v1 · 2018-07-27 · cs.DC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BX3RG5BPBYCX3FIEQ42PBGWB5F}

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	2026-05-18T00:09:40.389626Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0df713742f0e057d95048734f09ac1e97727f96c37016b57d78dfa1fb2e375d9

Aliases

arxiv: 1807.10507 · arxiv_version: 1807.10507v1 · doi: 10.48550/arxiv.1807.10507 · pith_short_12: BX3RG5BPBYCX · pith_short_16: BX3RG5BPBYCX3FIE · pith_short_8: BX3RG5BP

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/BX3RG5BPBYCX3FIEQ42PBGWB5F \
  | 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: 0df713742f0e057d95048734f09ac1e97727f96c37016b57d78dfa1fb2e375d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "825e85696a3345b3f086ed94d5d39b052616e4eaea824d23bd3d839cdc751da1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DC",
    "submitted_at": "2018-07-27T09:35:15Z",
    "title_canon_sha256": "a3244c7c1648a9043ba4e74360af41cd0c0fac656f1c8a9c5122fb19a4b4bae6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.10507",
    "kind": "arxiv",
    "version": 1
  }
}