Blanca Rosa Gil (born August 26, 1937 in Perico, Matanzas, Cuba) is a famous Cuban Latin Bolero singer known as 'The Singing Dolly'. Singing career Blanca Rosa Gil's first album 'Shadows' was record
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 0x9dd9ca2ed17fdfd3140b72dc5916ad49603f65b4b62a1be46e559c7ed051c5bf. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/645e2502-fa24-4abd-a394-be3a3a2862d0.json and https://artists.proofprofile.net/proofs/artist/645e2502-fa24-4abd-a394-be3a3a2862d0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x1a717f1bed577a99ed248693ebce5543521f426b1736839f5f0251375552d9e4. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:14:50Z), 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/US78T0502979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc31cb04bdf0f2deaa506365722882d6f94aa1f2a1675a8a76b7c00c739136a33. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USHM81794228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2db8e29c800b65b6627af6eadd606593d7d6c0814420aa16033b103165f0df. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USHM81794230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f5c21022d3ec3fe7953a938be7fb429430b82cd7c299f2e447e2da308e38646. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:42Z), 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/USR010616663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59fbb3cd4e549b774e3a62b15811d668ac8a65d64ab239575e1c47b9ab09d5d. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:31:48Z), 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/USR010616670.
Besos de Fuego - Blanca Rosa Gil una Muñequita del Bolero
Amor y Nostalgia - The Vintage Bolero Tapes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52059acc2bb0a38cd891486c4ab7cbb861a81b8e81a69db6516fa43c4d70cfb1. 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/USDBB0602714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3f3352677ef17b216936341fb63c03c2cdcc104bd9b56689d6922456f25474d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USCGH1118328.