Tony Guerrero (born September 20, 1966) is an American musician, songwriter, and producer. His career as a jazz trumpeter has spanned nearly forty years beginning with the release of his first CD, Tia
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 0xea173ac1d7e788479c153c06867497638fa8ca7d420040e90a235e7fbc5bff05. 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/ed55ae45-92f7-4a89-ae68-f0db4627672f.json and https://artists.proofprofile.net/proofs/artist/ed55ae45-92f7-4a89-ae68-f0db4627672f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Different Places [Reissue (Originally released in 1989)]
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 0xe9ee3c00bcebb773ab1f97dc81fcb3095b76660bb2f6c9a297d20957dc27ead3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USTC40838025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58996457d184db58824625c4be8049616202d0e1eb50b5c97a440f7f46b8287d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM80400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5b673bfad61fdc13a631a1bc1784f23b1f40cf0e5df379519181341ebce460. Chain 2 (Bitcoin): anchored in block 958635 (2026-07-19T00:58:42Z), 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/QMEU31804686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1e75d42a295d053a59e0a44344b99851415cef371a54181ed35e67070342ff. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZJ2H2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe902d8701d412cddde5d521c755fc1f6d50d507e367b33c6a1f9b2a60af80a7b. 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/QMEU31711818.
La Sombra (Medley) - El Sancho / El Sapo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602b0c1746631533bee7f63ae0529c8f0fbef1b3fd3e7c83dadf6f916164029f. 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/MX2971601242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66535f07dbb83b6d105cb87c28405cf6e52ea50148a3f4025e865be72a79069e. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/MX2972001992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2891ee9acafdffbb22d8b6879a03f5c5bcd14a9895710cdb87a6b673d97b7214. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/US5260500027.