ANNEX S - TRANSACTION PRICE BANDS & NOSTR KEY-ALIGNMENT MATRIX

Framework 1.0 retains the three transaction-price bands introduced in 0.23: LOW PRICE below 0,01 EUR; MID PRICE from 0,01 EUR through 0,30 EUR inclusive; HIGH PRICE above 0,30 EUR. A price band describes the economics of a standard native transfer and does not by itself make a coin uninteresting or exclude it from BEF. Dynamic or insufficiently evidenced networks remain LIVE PRICE GATE until CP-58 evidence is available.

The Nostr key-alignment test from 0.22 remains unchanged. Nostr NIP-01 requires secp256k1 Schnorr signatures. A native blockchain key is direct-key aligned only where the wallet/account can use secp256k1 key material and an auditable BIP-340-compatible signing path. Ed25519, sr25519, BLS, shielded-only or principal-only models are not directly Nostr-compatible and require a separate Nostr-link proof or adapter.

Operational safety note: direct technical compatibility is not a recommendation to expose a value-bearing blockchain private key to ordinary Nostr clients. Production use should prefer a dedicated derived/signing key or a proof-of-control link between the blockchain wallet and the Nostr identity.

1.0 Practical Classification (fee basis retained from 0.23)

The fee and Nostr filters are now read independently. The following examples show the corrected interpretation, always subject to COIN x PRODUCT x JURISDICTION and the other P24 gates:

• LANA - reference implementation; LOW PRICE reference; native BEF anchor.

• BTC - MID PRICE on the stated ~EUR 0.078 simple-transfer reference; Nostr-compatible secp256k1 key model; no longer excluded merely because the fee exceeds one cent.

• ETH - HIGH PRICE on the stated ~EUR 0.354 transfer example; Nostr-compatible EVM/secp256k1 key model; high transaction cost is an economic-use signal, not an automatic BEF exclusion.

• BNB, XRP, DOGE, BCH, LTC, HBAR, AVAX C-Chain, ATOM and KAS - LOW PRICE on the stated references; Nostr alignment remains as specified in the matrix.

• TRX - LOW PRICE when sufficient bandwidth/resources are available; MID PRICE on the stated unstaked fallback; Nostr-compatible secp256k1 key material.

• ZEC - MID PRICE on the stated fee reference, but P24 HOLD remains for privacy/provenance design; fee alone is not the exclusion reason.

• ADA - MID PRICE on the stated fee reference, but ordinary wallet keys remain Nostr-incompatible under the current key-alignment test.

• GRAM / TON - the stated reference spans LOW to MID PRICE, but the ordinary TON Ed25519 wallet model remains Nostr-incompatible.

• SUI, NEAR, ICP and ALGO have LOW PRICE references where measured, while their separate Nostr/account-model constraints remain unchanged; HYPE, XMR, TAO, DOT, ETC, FIL, APT and XTZ remain LIVE PRICE GATE where current representative fee evidence is not closed.

1.0 Key Interpretation Rules

• LOW PRICE (< EUR 0.01) is the preferred cost profile for frequent micro/retail circulation, but it does not override Nostr or other P24 gates.

• MID PRICE (EUR 0.01-EUR 0.30 inclusive) remains potentially usable in BEF; suitability depends on transaction size, frequency and the complete technical/regulatory profile.

• HIGH PRICE (> EUR 0.30) is less attractive for frequent small transfers, but the coin is not automatically excluded from BEF and may remain suitable for larger-value or lower-frequency flows.