André Vieira Viana (born 27 December 1992) is a Portuguese footballer who plays as a midfielder. Club career He made his professional debut in the Segunda Liga for Trofense on 2 October 2011 in a gam
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 0xee59af7211a75f5b7a8d406cda7b26453354decfed6ba3fa2f00987854cea4ca. 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/2b50a9dd-06ee-4b59-a23e-40f8acd4dfda.json and https://artists.proofprofile.net/proofs/artist/2b50a9dd-06ee-4b59-a23e-40f8acd4dfda.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 0xfdfd307f420de3eac92519602d273ba27198f01c15a032f2cde5826ec2097fe2. 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/QZ5AB2009911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd5c9688c0e3d44ebece3dfeb874fd782a16f5e5a598a5d230e5c0bfaac00e3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZGLS1910571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9490fd2f9d2f410c5c7c171e71ef03a18042824b4c5878b4a5e3d7b14a9467. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZGLS1910573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5637c1a2698cb2abf6f8700954fcde931c42185e643acc31bc8783267847b201. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/QZGLS1910574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc73db01bfb2be8ef19f5aefb4d1171029ac2c0868cbf5998f8a4afa4cd743a. 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/QZGLS1910575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e7c3ed6d3c4e1d85a7d938fe64182576886189fba82d70389862870ac09c24. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZGLS1910576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8220e48520686f459a0678777bf760222d66e65878deb48bacb7e49987f02b3a. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZGLS1910577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a017ba44ed9cd95b8222149ed9a79c86ba01fb30122ef48ebb43c23c6613d8. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZGLS1910578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fd4b31fab6cf3fa4a78cb33ba47874984a8354779c481adff2ab29b21788cd. 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/QZGLS1910579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b348270c1c9c212450fbe0efe89d9842d6344882f38fdd068a877b7c50806f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/QZGLS1910580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8942d40467945d82308a9c8246b77e7f804971e74f61029ec6635d2566201cea. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/QZGLS1910581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e69f3df56ea05b025a264ba9bc1ad848060210cafe759f03d50dd388c843d3a. 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/QZGLS1910582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08ce2184134cf27e3595fdd4a0ae2147a457237febd437f4c6ed3e1a8ae2b67. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZGLS1910583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15caddbc057129d53316bf1401c433fa809524b0263457b1ca7fc26f3893ab7d. 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/QZGLS1910584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2762f62f51b541d646e819982708c221dc5bc91823b0ecba0bcf6eef1ca67448. 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/QZGLS1910586.
Estou Apaixonado / Ingrata Solidão / Artigo de Vitrine / Eterno Amor - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5492747011bea58bd695dc77490e91e27533301e9cf64c25f919ab8e49286146. 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/QZGLS1910587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d428e534a02274bdaa60cafcf068082f010ea8d4e42d5854b3403a6007b3b09. 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/QZHZ41965827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6df8f28996fa23f7dde0db90c60acbfa6cc1ae7ed306ffe3aaa95359a53f2f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZMZ92375829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa601321f6feb0ae281cc85bc3cb72771a00da41a5a74e6483846d38141cf0c. 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/QZMZ92375735.