Latin Playboys was an American experimental rock band formed by David Hidalgo, Louie Pérez, Mitchell Froom and Tchad Blake, active in the 1990s. History The band began with a series of demo recording
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 0x686c0c5f020822e15209f86df00482fd3fa00f2b0f07233efdeb47cc1ea0bad8. 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/f31d9b8b-375b-4c5a-a180-f5241b84b953.json and https://artists.proofprofile.net/proofs/artist/f31d9b8b-375b-4c5a-a180-f5241b84b953.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 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 0xf8a61af07d4e2c0078a30b250294413e35c4f60e16c58ffd4c2883fd4d626187. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GBANC9400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b11f8544c29efa0c53f5fbaf610155310e1fedfa2f964e214d2245785428ce. 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/GBANC9400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23bcd093536ca8fd87a2dde074a4a73e12609edd16e9bf04b7683fa0c46df63c. 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/GBANC9400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8829b09af0a9c8bc9e43b5334cfac058e181c625c1bd4a389b8a265970ef91eb. 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/GBANC9400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee78cda5d0483577293f5358835413ccb85abcd72efc26ceada587937d516b06. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GBANC9400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359ca73a7c60c9dbc99da852872b5832b818e88cff9b1c96181bca7def58fac0. 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/GBANC9400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda26949eb10c25eb7a6b1c7661f596b224d2862129f040abb28d9d40eeaf2347. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/GBANC9400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5781854be5b1c1c15b3d0d88b1945e2fa00dff81d05e31fc8afcce4c782af863. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USAT29900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b4991aaf3d59d1f5e699a8704a2a32729733043c4b72cbf7f8af83b788fac5. 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/USAT29900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb6be644b5ea290180e968d20ff6ccd7034ffb4ec0425df449c34b721bacd5eb. 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/USAT29900066.