Pith Number

pith:YSVXXHOO

pith:2015:YSVXXHOO2YHVTQBE5GLDS7GUFU

not attested not anchored not stored refs pending

Dawn of the Selfie Era: The Whos, Wheres, and Hows of Selfies on Instagram

Daniele Quercia, Diego de las Casas, Fl\'avio Souza, Meeyoung Cha, SunBum Youn, Vin\'icius Flores, Virg\'ilio Almeida

arxiv:1510.05700 v1 · 2015-10-19 · cs.SI · 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{YSVXXHOO2YHVTQBE5GLDS7GUFU}

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	2026-05-18T01:29:39.930232Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4ab7b9dced60f59c024e996397cd42d3d0c17ad3a2108d4d6fb81b5008d8fad

Aliases

arxiv: 1510.05700 · arxiv_version: 1510.05700v1 · doi: 10.48550/arxiv.1510.05700 · pith_short_12: YSVXXHOO2YHV · pith_short_16: YSVXXHOO2YHVTQBE · pith_short_8: YSVXXHOO

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/YSVXXHOO2YHVTQBE5GLDS7GUFU \
  | 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: c4ab7b9dced60f59c024e996397cd42d3d0c17ad3a2108d4d6fb81b5008d8fad

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d76d0328fb7a0fb76e28e4322090313f9e40e6281d6db7ed84f7519f4c8b8cd5",
    "cross_cats_sorted": [
      "cs.CY"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2015-10-19T21:47:16Z",
    "title_canon_sha256": "5cf2aa508128d6e8ab14ee10691159ec601b3390fd41255ebcc9b014f81c7677"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1510.05700",
    "kind": "arxiv",
    "version": 1
  }
}