Pedro Martín José María Suárez-Vértiz Alva (13 February 1969 – 28 December 2023) was a Peruvian musician and singer-songwriter. He founded the popular rock band Arena Hash with his brother Patricio, A
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 0x7e4c3784686b0acd518c94908412fe48c8e37a220a3b333aab7aee02e28286c2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e33ccbe-4c15-489a-bb46-1b1d45df0d1d.json and https://artists.proofprofile.net/proofs/artist/8e33ccbe-4c15-489a-bb46-1b1d45df0d1d.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 0xeadba1a63f6e2575843587560bac9a2e9ac7ffccfd020fb8ad9b2d06b85e8cee. 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/PEB029900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d340e75c345b58ff2c55f90a99faeb33a18ffb380d9bb3cd3ce29229eb251b2. 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/USHM81162450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeadba1a63f6e2575843587560bac9a2e9ac7ffccfd020fb8ad9b2d06b85e8cee. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/PEB029900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a276db2bea96c8f016f665da588eb3151a1c794855fea68466fc8b5cd0fe288. 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/USSD10004837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f3f21103aab5271895bbfd4fbbf69402cdde47212c588ba726593948ab7d04. 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/USSD10104629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc578a0b3863278804bcb21e792c8f2bf5f791e05c45974145dd3cd8703a4bd67. 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/USSD10004254.
Cuando Pienses en Volver (Versión Cumbia- Salsa)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a6af38b5a3084609de467e340529073a7b1b620027eb7be5e40320b03658b6. 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/ES71G2052029.