Pith Number

pith:HQ7VGPJL

pith:2012:HQ7VGPJLKPBHORLNPAA3PHEAAV

not attested not anchored not stored refs pending

Footprint Tracker: reviewing lifelogs and reconstructing daily experiences

Evangelos Karapanos, Evangelos Niforatos, R\'uben Gouveia

arxiv:1207.1818 v1 · 2012-07-07 · cs.HC

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HQ7VGPJLKPBHORLNPAA3PHEAAV}

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	2026-05-18T03:51:26.824458Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c3f533d2b53c277456d7801b79c800560ef4e79e2b102cc476de4533ef9e995

Aliases

arxiv: 1207.1818 · arxiv_version: 1207.1818v1 · doi: 10.48550/arxiv.1207.1818 · pith_short_12: HQ7VGPJLKPBH · pith_short_16: HQ7VGPJLKPBHORLN · pith_short_8: HQ7VGPJL

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/HQ7VGPJLKPBHORLNPAA3PHEAAV \
  | 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: 3c3f533d2b53c277456d7801b79c800560ef4e79e2b102cc476de4533ef9e995

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "415ac2ba551087b960161d4a051588b57e2ca11193e9ad69d3974c1db4606c71",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2012-07-07T18:52:06Z",
    "title_canon_sha256": "5394d60938b84ec273cd26f74bed80ac93d88bd3579db2f6afad7f57bc075cd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.1818",
    "kind": "arxiv",
    "version": 1
  }
}