Leandro may refer to: Leandro (given name), a male name, including a list of people with the name Ero e Leandro, a 1707 cantata by George Frideric Handel San Leandro, California San Leandro Creek
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 0x45ef2a949822966060ac280fe3db555e0844ce60a8b164690d34fc959e4737e0. 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/fc4e5e61-c862-4a53-8888-21cdde2ba4e9.json and https://artists.proofprofile.net/proofs/artist/fc4e5e61-c862-4a53-8888-21cdde2ba4e9.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 0xc9c31a4b9a33de20ad3db32814510e63f6ebaf7d5b218fa72b1cad4193a1840f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/PTES10707201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47355d2051b11f9cfce7e3c34ffba5e9ccc66e839ade5729db3b8794dd9e891c. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PTES10707204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc263483b805c0da60ca6a00181cf6bb7c00539b9fdcd0ab5b98a0b3ff38aa3ca. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/PTES10707205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d429112f66d0255b6aecfd155a5d6b8fba4d0bbeed289ef670d362a6e9264. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/PTES10707206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc38af1bf0008ea29e6f223d4940469a267a92a955864b4eae8888011268d7aa2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PTES10707208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77315ae7e31aa71cda60c268845d7d6dd4887b56a6bc36d0d99ccc8bf405ba3. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/PTES10810702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6479c22fa9244e1ce3ad66d2c8e3a69a083af5caeb2de83dc9277bd8f19171a. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/PTES10810703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2453979028b3655740fb0d4d2c97136f342e39851ea5ec60e09b2904a1c6876. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/PTES10810704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbe30f93422f879e1173ad4b03f0144df8b10f136ca270d8f4593acc3e30acb3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PTES10810705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0def209a61997631323ceb305065a6f155e6b34eb493cca31248d819e967a8be. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/PTES10810712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dcdee2c0c0b2d2db3a19f6375786ee83f9729525ea64ec521239478028612e0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PTES10908601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38d44e31ffa2742f51ec0d617529d6ff3c95c81306803e603a83395fb7029ba8. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/PTES10908602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7895e3e107249570de8e8173c60be55a80cab3aa87b2d21aa39a02d034061a7. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/PTES11104601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01e6d0059d6badb979bbd5961f096de37dff2e5d988405fb7aa6e143eb55174. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/PTES11106902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977f52ff349de40c6661d548e0db623b39e0692d3bf9ab2e82a298fabc77fdb8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTES11106904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2afade0bfd235d48a257b04d7c278c0ec2837193e2e3ddabbaaa894e7d27bcb7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/PTES11208402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd8079678c6998b3a92bb8405cd0b5f9b3063176e05767d5810963b7f035201. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/PTES11208403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40606c8d2469c7fdbd6cdc41447efc5eacea6ca06c3a7916b623b0f7166c96dd. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/PTES11208412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4689d936750fc96239f00d794bd3f60a5ac8939a9afb62b7d2af4c7dd01c3e3. 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/PTES11408503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb605792d33c4249feab0384c402db9ee70e5a00615821363b841558cabfd4652. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/PTES11609102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1946e6b28ffacd2b9cf0b0afc9276dc5c2c42377b48b575a57d38228a10c705c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/PTES11609103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bef552ab4eebdb404fad5d55105e5adca47ca60a3a1f101d82c398e626a05c. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/PTES11609107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280ee7a57beb23f3568e5649b5ac5aeac6b2ecba0be019287bc144e3efc6dab7. 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/PTES11806501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb23f9481e37d37448873699a6194af383e72560f78fd295282db39f8d62e9ab. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/PTES11806508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c3b145f2d2454846c1d6669cd00263625fbb41c7cde50a4b0903121076ecc3. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/PTES11806512.
Que Mal Te Fiz Eu (Diz-Me) [Nova Versão]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab0bebd2c4db293168c53045c6f462c4dad3ca40e638f96a48ceab8f3da1dab. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/PTES12001201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc70e7121db4599c7564e6df95d973c673164c7bf6e2af2628736bd8bb01009a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/ES71G2224233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3314d09e3392ea948f87f00a6b683a6c7bf32a24884a2d7ce973a0cc9a748518. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/PT2EO2200535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9821a5513d26f0c53db185cb3f37c081777cce99eeb96939ddc0d36e0866d495. 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/PT2EO2300631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afe8a8cab4c85b7c180a7b5b70e0840892257f9a0b1b4afb4c679df617c9bab. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/PT2EO2400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b81f1a4a5eaf9c3f5aa8291054308d0de24c73d90a916076805e739c3a7ef5. 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/PT2EO2500336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35edd091f94d17542c72041ec5c753bfb557ef156cb3b66cac5343ab0bf1388. 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/BRBMG9800718.