Joaquina is a feminine Spanish given name. Notable people with the name include: Carlota Joaquina of Spain, Consort of Portugal Joaquina Cabrera, mother of Guatemalan president Manuel Estrada Cabrera
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 0x6036ae4b036ca8d2b8d624859ed8bfca9cb1a1265513334aa9b97bf82cfbca7a. 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/17388e9f-096b-4937-becc-83cfa1a4a9af.json and https://artists.proofprofile.net/proofs/artist/17388e9f-096b-4937-becc-83cfa1a4a9af.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 0x4c9ba20d54d335a51ce6932eacf8fd19c2afff2c93bd55d420e145bccf9fb833. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USUM72218255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe5f3dabaf759ac1cddc9b57d6df3748672b51756f8ee02d60f8a016084e316. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USUM72220097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9ba20d54d335a51ce6932eacf8fd19c2afff2c93bd55d420e145bccf9fb833. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USUM72218255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608bc8098408a004c5b77fb527180e96654489c4de6383f1209b509b6e8a7b48. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USUM72218267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585e3f1cb5c89c75f39d3a01cd2632a896b100367aa315672c8939a9239f2531. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM72302365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a02b0469211474c2f6f7bfb8bb64029591e078941ec476ffd9e154e9a80cfa0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USUM72318876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2d2ce626db50125873df2a915b3c117927f47eb706805fd6d9adf792efc4c8. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USUM72318877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ce3e851c458f49a950427279d5a2d1f9ac999ac06d0adc9642b516890e75a8d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/USUM72310985.
Blanco y Negro - live desde la casa en construcción
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae0d0c784fc7f050d2afac1d4000e1c6ac69fa9326df214edb2fbeeb92ffb1f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUM72311216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb4f4aaeb8bbcb674f069a0e93ef1c18cf1973f3d6fd5715c5f2598ad7ed415. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USUM72318885.
Si Nos Dijimos Adiós (Banda Sonora Original de la serie "Zorro")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb65c76ed5ec5970f0fbc2a5b2fbc3fb0efeabbc8a69f8df98472e4b643e2a6f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUM72400932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4273f076dc3148ea76ffd9940e04393c88b65b8fcfea6d0bd300ea9a5ee0fb03. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/USUM72406079.
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