Laureano Brizuela (born 22 July 1949) is an Argentine singer-songwriter and musician whose career has spanned over 30 years. Early life Brizuela is the grandson of painter Laureano Brizuela Giméne
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 0x1edc49897b87fed25e149305ea90e8890affb7f203d590fa5fcd531fcce3d8bf. 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/15f6ef67-1014-4b07-900a-c297e21573d8.json and https://artists.proofprofile.net/proofs/artist/15f6ef67-1014-4b07-900a-c297e21573d8.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 0x9802a8bc3b9436a05a6a25caa341f24c2f5bc992bd193d2ab6cfb18e8f0aa708. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXUM70802711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3190ec40236cbe9e5fc39c702a6cb97a73f841bda0e03aa9390e2d7daf0b66cc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXUM70802710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb697dae5122d9589e436581cb52209c3554be781937cb51d3c5b3b56771b209d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXUM70802730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdad79e2386e01f33aff1d0fd3d2387eed6ffb7df90195172c38eff5e0864b57. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXUM70904612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81cf1414df03035289a3cfc2e625cbc8e369723df031671929a4aaedd271f85. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXUM70802729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11007f25136f15e259741dfa52227685030e4b10986147965bf742cf07273d5c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXUM70802720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb716aa5327b3cfd11d0246be91e338fb024a799adddb6e26bd192569d2075d55. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXUM70802743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7494341afb7578cb432c6a256a3078e292917ba9b32989c02f8d4ba70546d08b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXUM70802715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead30b13aee4e9025fb5030cb7327601c38f526c76d5d47b9b17e0e817668855. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/MXUM70802737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb921fb760782a2193816ed07bea97f5c0f3969068fbd1a3e38b014603366ffe5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXUM70802712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb716aa5327b3cfd11d0246be91e338fb024a799adddb6e26bd192569d2075d55. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXUM70802743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead30b13aee4e9025fb5030cb7327601c38f526c76d5d47b9b17e0e817668855. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MXUM70802737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20eca8f8a29f0017a62281686efd4e84f35aa1c1c1567f15c520b8cd77c00fb4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXUM70802748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6de1cbfe990c9370816b41810e38d83567c90a9f01fb6d5ca411cb4b9af786. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MXF159300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5f3bf4d4fb7f29c77ff31d369cb2551c6e7523757c5c8ec7e77a14c34d5bef. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MXF159100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c8fc6c7f11829399f6b5c5331980eefd5a94e60b476fcf7cbbd4a98e5d4cf4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/MXF159100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a07013921110cd0a5c2d9cb72d73e39871abc26524b4f01031d726af59330c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MXF159100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd853d95de5dd8eff0293f470c569f49d7d18bcae0962ec7ec25872e37b744138. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF159100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a26819add58e625b8be829b68ce7472f5065550de454185f542ba9c324f91ba. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRLR62000003.