João Luiz may refer to: João Luiz (footballer, born 1971), João Luiz Ferreira Baptista, Brazilian football defender João Luiz (footballer, born 1985), João Luiz Ramires Vieira, Brazilian football d
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 0xbaa2265bdb133864e52241babbe3f79abc1c97d3b7eea77796d6360331a884aa. 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/6a4ae14a-a429-4bf6-ae43-7855ca12f0db.json and https://artists.proofprofile.net/proofs/artist/6a4ae14a-a429-4bf6-ae43-7855ca12f0db.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
10 anos de Violão Intercâmbio - CD Comemorativo
Central Guitar: 20th and 21st-Century Brazilian Guitar Works
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 0x0bddfd465e4552bcb25250ad8489e0d315b4d45676d8fbe81ce8cd952fddc5d1. 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/GBELX1003254.
Sonata in C Major, BWV 1033: I. Andante - Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f650618b2fdb3d42f68ed694bf19b7d6b5713bd2134af3902a3132e3af81623. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GBELX1003267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8f7532c6e4a9e1cd3287aadf1cfec1d5363f3495286f1649129ea23240bbb0. 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/GBELX1003255.
Sonata in C Major, BWV 1033: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f1b0ccf2c4a0f8e62b3d30ba8916e17e338181f2bec2bde1e514b42f2cc189d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003268.
Sonata in G Minor, BWV 1020: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d05bba3f456233378dd81b78b191e8c548a3eb342a20adb69586732973df35. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003256.
Sonata in C Major, BWV 1033: III. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab18c60a6b579b4aa5b39e655a223c76cc2d27a6bff928ce095c18e24ba124b. 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/GBELX1003269.
Sonata in E-Flat Major, BWV 1031: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa436d53c44723c5f2052d3ab6195ccf0050c2c416b880f30c609f578c4b5b82. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003257.
Sonata in C Major, BWV 1033: IV. Menuett 1 and 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af2d32415cd3f8ed8b339f9f8f29bde27857d139bfc63001e99e67d8856f169. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:04:08Z), 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/GBELX1003270.
Sonata in E-Flat Major, BWV 1031: II. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf249b8915b4b3ed059badf261dd67ea19fcfa64563b7d3d76af2904c991168. 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/GBELX1003258.
Sonata in E-Flat Major, BWV 1031: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe129c17b3cd5db10f7e2d9d06b614cd7da112628f32d1787b4c4b5259c4974f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003259.
Sonata in A Major, BWV 1032: II. Largo e dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6611933dfb91ecd227f44fdaab9cc2587e1aa3415f8be0babd73ca4cf808750. 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/GBELX1003272.
Sonata in E Major, BWV 1035: I. Adagio ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78ac2eeada3c1ad4e7374b3dd62c7206167a3ddfacd1ff80bec58e5b7d2c9c27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003260.
Sonata in E Major, BWV 1035: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c67f307bd75cd38d688a245864227ca40a3996fb5b321888e31e6ee96df923b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003261.
Partita in A Minor, BWV 1013: I. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11fcacae8d7048c31837f9aa89395af0cac4186f73b3e434f9719ccdaf0e12dc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003274.
Sonata in E Major, BWV 1035: III. Siciliano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20c393e4e2c850526e01956d094b88150e287fd5e24b98a2104c5582e06e848. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003262.
Sonata in E Major, BWV 1035: IV. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2be4533d60644cc996aa1927207c75db5b7d90215a1b01f0ec52da1a04a18e. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T16:28:29Z), 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/GBELX1003263.
Partita in A Minor, BWV 1013: III. Sarabande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f1e2eb69087a9805245860e627217a15c68f4cbcaa5ace002c5609723b5ab1. 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/GBELX1003276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9930231e3b3037e0cc961f001a0b225977cd5a8ac4b489206fe8612be4d6be. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003264.
Sonata in B Minor, BWV 1030: II. Largo e dolce
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8bbd07ce39af20e7d1358eff1735ae9302e575f86f7ffc4beab898f1ed21596. 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/GBELX1003265.
Sonata in E Minor, BWV 1034: I. Adagio ma non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa9dfee0ec699de7309807f8a1156487e5d11312d960fc82bb3267486bde623. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:47:24Z), 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/GBELX1003278.
Sonata in B Minor, BWV 1030: III. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b85014ea47ea27844ac298c61e4b24ff3d74b1ab056af33fb8a0bcfce53ffd5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003266.
Sonata in E Minor, BWV 1034: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce3b9e656ad52927f5326f7b3178a052bddb7989c7c1b48cfb8c90a0191dc4e. 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/GBELX1003279.
Sonata in E Minor, BWV 1034: III. Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24c28484fcee3f33a8eb3d8305aadc76b7d1cea391c28471c74edf5acfa4a88. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBELX1003280.
Sonata in E Minor, BWV 1034: IV. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47af0f6d7c06d6b4b9b4978cd3c5ddb3747e9e3bceaa1ad21dee592af46f1160. 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/GBELX1003281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f28d6ada450241e86b000bb3eab4ab8bb97c1c6df570cc12eb2406dbcbe47f9. 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/GBKQU2248815.
Clarice Assad, Brouwer & Others: Guitar Works
Guitar Sonata No. 1 in D Major: I. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811a9ed91d8a765e4d62419576874d4e9e723007adaf944f7cef73f721a36472. 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/HKI192200706.
Keyboard Sonata No. 23 in D Minor: I. Adagio (Arr. R. Oliveira for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x563907eb01bb5c3c2c35d236de6547935dfc5a308244d84adbfaaec2080dc79d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HKI192200710.
Keyboard Sonata No. 24 in D Minor: II. Allegro (Arr. R. Oliveira for Guitar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866ee11f02c3d359042d6dc9351346cd3359c9ac26d3d476d99bd4741667238a. 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/HKI192200711.
Mestre dos Mestres - homenagem a Henrique Pinto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5790543d9c1d2e8bd2a4f1445cdcf1936b978d74008276f9883d55b2c3a39dfe. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BRA221108093.
Miosótis: Paulo Martelli Plays Zé Henrique Martiniano