Sousa refers to John Philip Sousa (1854–1932), American composer of marches Sousa also may refer to: People Sousa (surname), including other Portuguese variants such as Souza, de Sousa, D'Souza,
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 0x956b17eec2a3ba58c37ba5734d14717c1adbd62b8292bd44d2c3b2bb35aeed7d. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d602e428-1223-4612-869c-be8e687cafc9.json and https://artists.proofprofile.net/proofs/artist/d602e428-1223-4612-869c-be8e687cafc9.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 0x20b99320950e7983d28f62ed54a1799baee20eddd974046a654c5911a268c4bf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZNJX2395486.
Casa Comigo / Depois da Briga / Fato Consumado
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ee73c809f994a13fa3eaaac578a2a4bf5ed967ece379ffd8e77784e6187c2c. 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/QZMZ92396702.
Razão da Minha Vida / Por Tão Pouco / Por Favor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6d37cd58a50902c6ec3ab7f87bd35d4769f7b7f7ba3607b59ff64161ab23cb0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMZ92396701.
Insegurança / Meu Amor / Sonhos e Planos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e4dc6ec9d10f30d039609b2423c14fe7d8f339eda8eab1c53fc2d12da4eb49. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/QZMZ92396699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b276254b0e9ad8035a33877268d2400ce6b46252377ac419e9a01938fb1a2e5. 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/QZMZ92396700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aff3bbd9baee0c07ca9d70aeb90468e1ec43d6abb0e9f29c7e228a575bc1bf9. 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/QZW9K2353397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43580f215663d341204fe43869988cebebe1f816d6f3e89c81b97804830e8eef. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZW9L2374098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2dbb7604cf60d2c7db82cac1c2a5024eed9d80e7488faab702326b4f48afc0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US7VG2439130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aff3bbd9baee0c07ca9d70aeb90468e1ec43d6abb0e9f29c7e228a575bc1bf9. 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/QZW9K2353397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d21d4a3ef2829dded6fd262f31441328c64fdeb3952e8b6ddad1717e9fb420. 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/US7VG2456751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba49e78b62fe86f34498d9ce52efb0b521d1d0046479e7ef315eea57b9b87b77. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZMZ92447413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4177986f6fe8f64c9cd53e345e76159ba010cb5b2132ca9ce389868f16f8baa3. 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/QZ5AB2402120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1f8147e1dc3aa9ee91d4d53ee0fa60aaae7b24ddd9e72e645f1ff1ca6253bda. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZ5AB2402105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ccd9f7680c2ba60feadb8b992c24dea326df5b0c79868a3aa33773a3556065. 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/QZGLM2412925.
Me Assume ou Me Esquece / Teu Segredo / Ainda É Cedo pra Dizer Bye Bye - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5892164d3cf3f8d3f5c0091885692a84fb1a209dfc027400681dca50c876a3c9. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/QZW9K2470485.