Pith Number

pith:IFH53KSW

pith:2015:IFH53KSWV2LYFRK76VBUAMVSHE

not attested not anchored not stored refs pending

In Defense of the Direct Perception of Affordances

Abhinav Gupta, David F. Fouhey, Xiaolong Wang

arxiv:1505.01085 v1 · 2015-05-05 · cs.CV

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{IFH53KSWV2LYFRK76VBUAMVSHE}

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	2026-05-18T02:16:51.997656Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

414fddaa56ae9782c55ff5434032b2390153940826dce1a3a91f2410660d2470

Aliases

arxiv: 1505.01085 · arxiv_version: 1505.01085v1 · doi: 10.48550/arxiv.1505.01085 · pith_short_12: IFH53KSWV2LY · pith_short_16: IFH53KSWV2LYFRK7 · pith_short_8: IFH53KSW

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/IFH53KSWV2LYFRK76VBUAMVSHE \
  | 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: 414fddaa56ae9782c55ff5434032b2390153940826dce1a3a91f2410660d2470

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e9ebd4158aca831ad1c61ec0f1deb8311b45095bec4210740a89374adc2a8edc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2015-05-05T17:11:26Z",
    "title_canon_sha256": "4ae51002ba061deca1964b5be9edbcbd8129046aaf24a6661ae60664a4adf6bf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.01085",
    "kind": "arxiv",
    "version": 1
  }
}