Roberto Sanchez may refer to: Roberto Sánchez (hurdler) (born 1910), Mexican hurdler Roberto Sánchez Vilella (1913–1997), Governor of the Commonwealth of Puerto Rico Roberto Sánchez Ramos (born 1960),
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 0x7cc61a7b68138e095a36d58e27435f0e7add0a8bfe8d093c7dbd79facabce9e8. Chain 2 (Bitcoin): anchored in block 953730 (2026-06-15T02:47:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/93f60dbc-55ef-4eb0-8f16-bc1394a87bd6.json and https://artists.proofprofile.net/proofs/artist/93f60dbc-55ef-4eb0-8f16-bc1394a87bd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Roberto Sánchez con Gloria Matancera (Remasterizado) (with Gloria Matancera)
Rock en Espanol Sigamos el Camino Rout 66
Rock en Espanol Casas de Carton Route 66
Nuit de Boleros (Sonora gloria matancera)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0x0c821a9fd9a01748c9bd7928167331b946e83a008b547235cb1323ef8dfac9dd. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES7311200099.
The Real Cuban Music - 100 Essential Greatest Hits (Remasterizado)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e761aa2ad8790d1eed6ca404f2c5fe0ae55b1d84aef9ce8e1d150d1c99c9fac. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ES5021801025.
Deep Roots Music & Dub: The 10" Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bdfdfb84963790bb45f83c569d68ca40e6934720b5e3cf7ad70047f44baf6ac. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFME1492700.