Frank Grillo (born Francisco Raúl Gutiérrez Grillo; December 3, 1909 – April 15, 1984) known professionally as Machito (previously as Macho), was a Latin jazz musician who helped refine Afro-Cuban jaz
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 0x6fe7393e5c0609546274fc00904145baf73f571b9e72a324c7c3fdfb8f0b0631. 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/e7c4f8ed-91fe-432d-b9d7-3adccad18928.json and https://artists.proofprofile.net/proofs/artist/e7c4f8ed-91fe-432d-b9d7-3adccad18928.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 0xcefc171287ef4cbe2cf13ee7bffdf43f516fb5c03f3af4eabd97b57dd60316a7. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:12:08Z), 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/DEXO52472955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723956aac6cc631fa1fa44bf0c60b90a9be409fa154898087a52339f6bf4a9f2. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEUD92395264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe089da16e39a8df105054c21fd4de87de432cc96095c72af41ac99b8446e5a01. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US29S0400159.
Tito Puente Meets Machito The Mambo Kings
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4342dd156bfe6390b4664110548868adaa7adf82a12f15cc3ee4eeecafa52725. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/GBAYE9902076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63c5ada1da0cb0b492620b76f50426a4f253fc19b18198b5015cf48962224ec. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GBAYE9902077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7869a4f86bac76ebf19111fe42c67f1254a110f1d2c6625c679ed9f57f485f31. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBAYE9902078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e73dee247e7718b691066984d6f798b619ea8d8f62473454b2bb93cdc81959. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/GBAYE9902079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696a9064cd2e963b8343e33b1684da8c21584f74c177f46e175f7ebd4ea60fa4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBAYE9902080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e6221b53532a5c3ef4491d7e3ed9f7586deb2a794e5b481b2139d8f15ba6f5. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:07:00Z), 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/GBAYE9902081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b4b67cb96e8d094ca88430c2accaaab6108f9b140b0d43e2e128d8461e530a. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBAYE9902293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d54f75adb78c275f07a0b40009a621ce68689e0414fd22aca9f85149e682b61. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBAYE9902083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51e38cfa11beb39563e599ab5f809715f24e945c5da78224db9b74c0a3c7b886. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USDBB0605699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3991395338dc53ddba9b2dc446444bc459afcfebfe76773f4ad68f160fd43a. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ESAAI0260318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b304cb15854d049bd39cd22448d07bb19f437d2c0859fbeec844e4bca950f8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USDBB0992503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd310934e85743e72d50db323b1900b0e25b5229656481a07e2513541eb40d122. 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/USDBB0602056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cd7160ad71d1bce023ee9afcd705d80eeb3ae4b70d3205e91f77ebcb7bfce4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USDBB0605289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7cb88c21a580f5b0e0292c0a6b1a8c1fcefdac2ab10af8d4e3a0abc2fb0105. 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/USDBB0606786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd243c70f0321038649f8529b7607cda6c41bb69a63905ac79adc9da2f33cc139. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USDBB0992505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c032920d3bb5da40076e3afa5f8c625e2ab2f98142260c62762dd2c73adfa4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USDBB0601355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512dd96f96821b6edb7f7f25d477163b07e0d355c7b94ffd84fa4d989062e0a4. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USDBB0900351.
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 0x1760fbbe69f938d9d71356cd4a123eadb4663a3b907fef1bc943cc9ef1193459. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/USDBB0607292.
The Fabulous Jazz Collection (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7a65ac7abaced44572d1e95134ed1558483dce704af41b8dfa79a0f29762ad. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QM6N21431749.
Les idoles de la musique cubaine : Machito, Vol. 1
El Son Cubano de Frank Grillo (Remastered)
Les Idoles de la Musique Cubaine: Machito, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563f5a82c79f50ecfdcd93303037ef839c2dc07908a9641490faa9876808c6aa. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/AUXN22119335.
Machito Dances And Other Latin Dance Favorites [Audiophile Collection]
Machito Dances And Other Latin Dance Favorites
Just a Hop and You Are in Cuba with Machito - Afro Rhythms of Carnival
Ritmos Perdidos, Vol. 3 - Son, Mambo & Cumbia Classics
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbbe7554998d382e6b7108549a70cf040560683105605882b20c8aa1699f6eaa. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/AUXN22530873.