Pith Number

pith:T36FIBTC

pith:2016:T36FIBTCDDZ4MFBBB3X7O2GS5M

not attested not anchored not stored refs pending

Recognizing projections of rational curves

Carlos Hermoso, Juan Gerardo Alc\'azar

arxiv:1603.07500 v1 · 2016-03-24 · math.AG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T36FIBTCDDZ4MFBBB3X7O2GS5M}

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	2026-05-18T01:18:20.726590Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9efc54066218f3c614210eeff768d2eb2044771e6cb40be1b8fcd3314a785a23

Aliases

arxiv: 1603.07500 · arxiv_version: 1603.07500v1 · doi: 10.48550/arxiv.1603.07500 · pith_short_12: T36FIBTCDDZ4 · pith_short_16: T36FIBTCDDZ4MFBB · pith_short_8: T36FIBTC

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/T36FIBTCDDZ4MFBBB3X7O2GS5M \
  | 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: 9efc54066218f3c614210eeff768d2eb2044771e6cb40be1b8fcd3314a785a23

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a9ba27ce23e7651b01daa95e4b91bd11fe7f244052799a6dd37640aa9ea1c773",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.AG",
    "submitted_at": "2016-03-24T09:39:42Z",
    "title_canon_sha256": "11340e6afac071797d7f6feee2df9d2948977ddb81bdaaa936214079b62f9adb"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.07500",
    "kind": "arxiv",
    "version": 1
  }
}