Manuel Varet Marte (born July 21, 1979), known as Vakero, is a Dominican singer and rapper, believed to be one of the most important acts of the Dominican urban music movement and one of the first to
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 0x501bc04cacf3fcd941a33d5e6d2278e1cb926dc6a4440f53a6b8fef87101313b. 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/5f829d68-dc79-4482-96d1-79f36498862e.json and https://artists.proofprofile.net/proofs/artist/5f829d68-dc79-4482-96d1-79f36498862e.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 0xb09fc661d65ec03a36191ffd98bf780ed977007139924965a80d79e71fb60dc5. 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/TCABX1427284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27f4112d3bc20651bdcec9badfa9efec712605b80b9eb9f49a3e59577f2465cd. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USB271500945.
No Hay Amigos (feat. Big Mateo, Vakero & Poeta Callejero)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff0599c8526a02af300ebde22c335ca98f8c0c7c619f1faabec25970df4d6e3. 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/USASN1202074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff380fe102b1de81e2465b822e9bc07b2eac0b518b98ad803160242fec4b0d5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM4TW2147793.
You Want Me Baby (with Big Mato, Vakero, Skeem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e81fb7f006532c4c3dc1f0b3da0e4cedb1f9f46e98546583c0fb93a016e74d6. 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/ITF250800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4a554036c85b1dd4db8ffdb77cc832f05cdab592d2acf64441f9b582da85a1. 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/QMFME1460653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6266997b46075ba224fbc7dd3e96ee2e0d5b7d4198cd3516da69d9fb20d7050. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QM4TX1565661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8f14184134e27d6d810483f493ff9b5581fc72fa71b785a0f610b4ce7e543f. 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/QM4TX1565662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c5e0dc24be701c53cd7847a82060c27509548ec72dfe572ccd3e94351eaccc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZ5FN2096069.