Pedro Carlos Soto de la Colina (23 October 1934, San Luis, Cañete, Peru – 19 July 2004, Lima, Peru), popularly known as Caitro Soto, was an Afro-Peruvian musician and composer. He was known for his v
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d8d806629d20c65cf4fb0e4e0a61fe1750a6d3c5e3d5c8a28b07a4205739d6. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7a105f46-2040-411d-836c-32a44929a208.json and https://artists.proofprofile.net/proofs/artist/7a105f46-2040-411d-836c-32a44929a208.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Caitro Soto & Rafael Santa Cruz: Desde el Cielo Le Cantan al Perú
Caitro Soto: The Master of the Afro Peruvian Music
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1c97a2499ffe234f14b012adabb419e6966cb2fa43ccd22ef3f9884ca5752d. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:01:58Z), 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/PEMG99501005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b8fc335b3206ed97ab2c796a98c97b2e1571e837de6f4d2864c6cc27c99c6a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/PEMG99501007.
Festival Musical del Camote Peruano (El Carmen, Chincha)