Pith Number

pith:XX75MGLS

pith:2018:XX75MGLSRKVBFAZTQV6SG3TSWL

not attested not anchored not stored refs pending

The Signpost Platform for City-Scale Sensing

Bradford Campbell, Branden Ghena, Joshua Adkins, Neal Jackson, Pat Pannuto, Prabal Dutta, Samuel Rohrer

arxiv:1802.07805 v1 · 2018-02-21 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XX75MGLSRKVBFAZTQV6SG3TSWL}

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	2026-05-18T00:00:30.633007Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bdffd619728aaa128333857d236e72b2ca257007d1d819e23df8d035604b9a9f

Aliases

arxiv: 1802.07805 · arxiv_version: 1802.07805v1 · doi: 10.48550/arxiv.1802.07805 · pith_short_12: XX75MGLSRKVB · pith_short_16: XX75MGLSRKVBFAZT · pith_short_8: XX75MGLS

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/XX75MGLSRKVBFAZTQV6SG3TSWL \
  | 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: bdffd619728aaa128333857d236e72b2ca257007d1d819e23df8d035604b9a9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "88ddb984c662647eb727789a1bed386ebc04f36d154ad1aad0b027a4400ed61f",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/publicdomain/zero/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2018-02-21T21:03:59Z",
    "title_canon_sha256": "4f37fd0caa51beb2bd291660cab7868262bb6e7b4d6aaa57d457bc3533c4e756"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.07805",
    "kind": "arxiv",
    "version": 1
  }
}