Pith Number

pith:NA2IQEMT

pith:2016:NA2IQEMTO4UFQFG6NYYYQ4DHUI

not attested not anchored not stored refs pending

Daala: Building A Next-Generation Video Codec From Unconventional Technology

Christopher Montgomery, Jean-Marc Valin, Michael Bebenita, Nathan E. Egge, Thomas Daede, Timothy B. Terriberry, Yushin Cho

arxiv:1608.01947 v1 · 2016-08-05 · cs.MM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NA2IQEMTO4UFQFG6NYYYQ4DHUI}

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	2026-05-18T01:09:44.200953Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

683488119377285814de6e31887067a235873f06bd3dc2c2cecd35a487883e27

Aliases

arxiv: 1608.01947 · arxiv_version: 1608.01947v1 · doi: 10.48550/arxiv.1608.01947 · pith_short_12: NA2IQEMTO4UF · pith_short_16: NA2IQEMTO4UFQFG6 · pith_short_8: NA2IQEMT

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/NA2IQEMTO4UFQFG6NYYYQ4DHUI \
  | 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: 683488119377285814de6e31887067a235873f06bd3dc2c2cecd35a487883e27

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "af1ac7021666413d0614593b4b7986e30e940a8062e7403e2b0d40b0431cd022",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.MM",
    "submitted_at": "2016-08-05T17:36:51Z",
    "title_canon_sha256": "b8b3365a047da8771395c0d3cf0ad8bdcd4b89c25e6a25f9bcbbc1fa2db50d48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.01947",
    "kind": "arxiv",
    "version": 1
  }
}