Marino Perez (December 26, 1946 - July 26, 1991), also known as Esteban Perez, is considered one of the greatest bachateros of all time. Known as "The Father of Bitter Bachata", Perez wrote music that
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 0xeb6e7d2fb7e87dcc65422f53f11c8070454952ae59f8e257f78cbfc39dcec671. 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/3c747350-f894-4e47-abd5-11deeb8803a7.json and https://artists.proofprofile.net/proofs/artist/3c747350-f894-4e47-abd5-11deeb8803a7.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 0xae469a17716ee976a53592e3275d69d209d6142912cfebd099f8cd9c97968b7d. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/FRX281987159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8ed978f980ca76ece2c24516373bb3c84bdd957c73aa2dfa279080d82323c3. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FRX281987164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d0e77692e05dd2d2546455d23162052e0f4752638d5c5a86bd856e07a094bd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DOA472400303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a7fa735709e304dd5bd61f094037d237919a8f1a58a6999534548f68841aba. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DOA472400304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a063bd94dd682249ec2f16b91310734ffc45325b5d75dda590367bbff387e36. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/DOA472400305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630ccde1f5594a52da2cdb31a91ce7ed36ad6f0093e51a63c53af90ee8d59ced. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/FR2X42044664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be1d90db4b456a9d6432de3916f7552cfcfea8156738a7078542416196d57d4. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR2X42044677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2605ebd65bfcb54e61c17fad3d0be1498052631f0e3ae42c13104d3053af07f2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X42044679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44020ae5ea3154f6a9ab0c86f89e3f19f6f8be16f4d3e5ee5856c5cac6d01a80. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR2X42044680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5911f319d78c4965edd209fdef033724980f856f9f6681351fcb11b3b9505382. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR2X42044682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77263c73afdc44d4348a729598f73cba814bc5ce0627eef95d1a4816a9ac76bb. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/USQL81000314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c37a7ca896f5846dfc6af5d07a33db706ff0d2acd68630bd1c8bbfa856db262. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAJI2568633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac3b69b11554f57ea53dc5ccb22aa45361035035bc586054b592722ca5118d5. 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/TCAJI2568637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c68433a317497b8712285d7c7a4fd5e33e68e4381d51bee09977cf1d9d82d8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCAJI2568640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe271ae02e6e479cf2c1d3ae38b3085fdf16ee413c20e6371c8336ab906abc50c. 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/TCAJI2568644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e085c786ff6d171e7c18390f38399ae25f442772b727cb5ffa8efeb0f22740. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TCAJI2568646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23bc9db2619379dddd765a9faf0604bd14ec5069c1213f4a48c2fe0f97fe263. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJI2568647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03de165468d62cec7a538f34384d03b6f2e659abefe077550242b0f1905c326. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAJI2568649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8f75a1a935d497f2fd5d00dbd29a562f8d82ddcd9e3275ce43a084cf40d799e. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/TCAJI2568655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b70a3ee303230e33d8602230e183b4af49dada31383c6a1b2c9b01af1e3d68. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAJI2568657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0138dd8071892a1499bc1b39283e06e346f478dc6ab0e748d4065597a4f0b0d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAJI2568661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd79a13b20be6783d296be73b3c67e04f34ddaa865781da94f7ce24e76468dd0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJI2568665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f8ed92ab4701373975f10ccc7ab7d47a2e2c81d01efb99101993b9978155d24. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TCAJI2568670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69cb318593cf43f448ff598f82cbbee3086f846c6fa807dce7422703c7d62b4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJI2568672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681ba07ea233a65dad7ef916ad08c402585ad58891fa9ed3d5065c80c4493b82. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJI2568682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8ca5e832f5e2ef6dc9af9f3a14ca330cb314c95125e6ca3b6fab25079b3885f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCAJI2568687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fae588d443b0099c096d0d266c0d6bde3b2ae257188225ce49c90eb923c472. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/TCAJE2531060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf238d2fa0145c46adc5bb2c02ac0d65b9ac883b43ee3955df872238efe5b0546. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/TCAJE2531065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b9119effe2380eacb3e65aacd3c8d06844f0546804b0a666254363eb506e52. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/TCAJE2531078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916db5b2f03c01f3b76ac0345294cc733f2a47cfc1f4b7323fe6d21e10fcd7c5. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/TCAJE2531080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073e0950ddb9ff296a5876e24d2ef49777eb7e4612f4cb979b301eb304cd3180. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCAJE2531234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43796a94c3d96fe081a61720634278dc1d3734a4ef8d78f06494bea591664627. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/TCAJE2531244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebccaf05907c914cf1b6a635955ecda03f87df85ba6c0376c90c3a175d99cd1f. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/DOA251800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f89ea9bb966e2fd55c82a482d9589469bef4c36f2d112b214f3572e21477bc. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/DOA231800277.