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Ordinals

Ordinals assigns unique identities to individual satoshis and allows arbitrary data — images, text, HTML, audio, video — to be inscribed onto them. This enables NFTs and digital artifacts directly on Bitcoin's base layer.

Key Concepts​

  • Ordinal numbers — Every satoshi has a sequential number based on when it was mined
  • Inscriptions — Content attached to a satoshi via Taproot witness data
  • Inscription ID — Unique identifier in txid:index format
  • Sat rarity — Rarity tiers (common, uncommon, rare, epic, legendary, mythic) based on Bitcoin's periodic events

What You Can Query​

Rebar Data provides comprehensive Ordinals data:

  • Inscription metadata — content type, size, creation block, parent/child relationships
  • Transfer history — complete ownership chain for any inscription
  • Sat information — position, rarity, and attached inscriptions
  • Content retrieval — raw inscription content
  • Search — by inscription number, ID, sat number, or content type

See the API Reference for full endpoint documentation.