Christopher Andrés Álvarez García (born 16 September 2001), known professionally as Cris MJ, is a Chilean rapper, singer and songwriter. He gained international fame for his hit single "Una Noche en M
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 0x62d3b8d1de7365211269e3632f6c2c51efa7f4be28ed38fb136bca71fb121944. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e289c35-2dde-4146-bde7-ddf2bdb1a2e9.json and https://artists.proofprofile.net/proofs/artist/8e289c35-2dde-4146-bde7-ddf2bdb1a2e9.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.