Rosalia Vila Tobella (born 25 September 1992), known mononymously as Rosalía (, ), is a Spanish singer and songwriter. She has been described as an "atypical pop star" due to her genre-bending musical
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41de88b21c6d19af8d6e95aa10751604ef412ed60c649a3b8ec4d6466ba7ae9c. Chain 2 (Bitcoin): anchored in block 953955 (2026-06-16T14:29:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/264dd1c2-0311-4ee0-b78b-4a233045607f.json and https://artists.proofprofile.net/proofs/artist/264dd1c2-0311-4ee0-b78b-4a233045607f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).