Tacabro is an Italian dance music trio from Catania, Sicily, initially made up of Italian DJs and record producers Mario Romano and Salvatore "Salvo" Sapienza, and later also of Cuban singer Martínez
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 0x74ef081d838ef0c34f521ada3f3943ec93552e63557a7a7cfdbab7a83342ae31. 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/1d9ed1ff-32a4-4de4-af60-aee999812c12.json and https://artists.proofprofile.net/proofs/artist/1d9ed1ff-32a4-4de4-af60-aee999812c12.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 0xe90a0076acb9e50403a05e40bde6d27ed00a55ab96fe8b62808e34da59e8e18f. 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/ITV951100211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf65d3c380e1f23682f1db01ca29376bc1df169d96cf520b87aaf3cdf63ced1. 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/ITV951100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1cedaf03a8a9539004f2b243a638c446dee11b280d414f9f1fb50c9e219501. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/ITV951200334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf65d3c380e1f23682f1db01ca29376bc1df169d96cf520b87aaf3cdf63ced1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITV951100212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4621883be82ab1b1e69777987195957035132114ad018189f49b0d136a64af3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ITV951100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1f9b17d43cdf6558e19bd5182b584de871c2144cc9b2bf5107fc64eb8ea3ac. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/ITV951200341.
Tic Tic Tac (feat. Prado Grau & Orchestra Bagutti)