Pith Number

pith:TFPVWDEK

pith:2019:TFPVWDEK5E6BW7GMVNWIXPQI2V

not attested not anchored not stored refs pending

Negative Space: Workspace Awareness in 3D Face-to-Face Remote Collaboration

Daniel Mendes, Daniel Sim\~oes Lopes, Joaquim Jorge, Maur\'icio Sousa, Rafael Kuffner dos Anjos

arxiv:1910.03380 v1 · 2019-10-08 · 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{TFPVWDEK5E6BW7GMVNWIXPQI2V}

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	2026-07-05T00:10:46.151710Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

995f5b0c8ae93c1b7cccab6c8bbe08d577e0fb59287f653f0b2bcdce9ef3ec0c

Aliases

arxiv: 1910.03380 · arxiv_version: 1910.03380v1 · doi: 10.48550/arxiv.1910.03380 · pith_short_12: TFPVWDEK5E6B · pith_short_16: TFPVWDEK5E6BW7GM · pith_short_8: TFPVWDEK

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/TFPVWDEK5E6BW7GMVNWIXPQI2V \
  | 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: 995f5b0c8ae93c1b7cccab6c8bbe08d577e0fb59287f653f0b2bcdce9ef3ec0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "832df4839ed781cae6f13a664ad4018cfdd5d9b453dfbdf021bb602cd12da794",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.HC",
    "submitted_at": "2019-10-08T13:18:52Z",
    "title_canon_sha256": "48599d093735affabf5f2556d61c2c7a240bd57948cf8ba568c0dae495be7ef6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1910.03380",
    "kind": "arxiv",
    "version": 1
  }
}