Alfredo Belusi (born Alfredo Belluschi, Los Quirquinchos, Santa Fe, 10 January 1925 - Buenos Aires, 1 January 2001) was an Argentine tango musician. His works at José Basso's and Osvaldo Pugliese's O
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 0xef70fc8897765d554514601fb5cf48d8de5e87c9be4fddf3b7f234c7fa9b11da. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3042c27b-a056-4136-b3b5-bb2d4696dcf5.json and https://artists.proofprofile.net/proofs/artist/3042c27b-a056-4136-b3b5-bb2d4696dcf5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alfredo Belusi con Orquesta Osvaldo Requena
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 0x153312d9fe47b64287832bcd05a9d886fa7d9e7426fad50df1060a4c5b57ed0e. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/ARXP71601535.
Antología Noble Del Tango: Sus Grandes Intérpretes Y Compositores
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcb2d6d367248e201cdd3e4005712bd83a20472f6c9da3e4b3af84d1f90e980. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USR010612445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09f559f32ec9f6a20a8a2547c3a7258fbaf2393bc473e96491c64ffd13a7165. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM6MZ1480863.