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 0x422c3685e62317d3867d038ef808b7ec4fcf06073e99ee1d9eaeedd7fc11a45d. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2b57b52b-aad3-4fb3-9175-7148b9cde865.json and https://artists.proofprofile.net/proofs/artist/2b57b52b-aad3-4fb3-9175-7148b9cde865.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pot-Pourri: Abertura / Locutor Apaixonado / Menina Paixão / Bela Loirinha / Sol de Verão / Canção de Amor / Reprises de Amor / O Trem da Cidade / Vem Meu Amor
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 0xfc78e35fce9ebb8167dd547b58555b83ab377825943c8a7faf8ee4b7af9fea90. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/BRACT1601683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3c2222e3bb01906db1a82123125890b284e63b88f463e82b9877838d0a7a90. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BRACT1600865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f68b90f4015ef265e4d8f07ed235cf5a9e09cffe536f55670d19e7d748f94f. 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/BRACT1602840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2930a23cc71d383cf87a17286fdf6eaef08732f05ac33c04fdfbe50bbcf19f98. 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/BRACT1603609.
Pot-Pourri Lembranças: Prosa / Convite / Tô Voltando Pra Ficar / Bugio da Capela / Rancho de Beira de Estrada / Galope do Mouro / Tetinha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fea93a9a20c80a3fc84e53d35ddeb263ceebafb9d2013645484d51a8401a22. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRACT1603620.
Baila Baila 2: Come Prima / Cuando Calienta el Sol / Voltarei / Tornero / Una Lágrima en Sul Viso / Che Sará / Cin Cin / Volare / Nel Blu Di Pinto Di Blu / Oh, Sole Mio / Ciao, Ciao Bambina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7fd7b3f767bc65e39c583028eeaea4d0a01bd2fb439b012a204ca43042dcab. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/BRACT1604465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56494a809b9d92a5bcbd65d943710b87220e18d165f5d881303fd64a08cf89e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/BRACT1606078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed83c4344ca316fa0dbac1f44a81058d831989a9787825ec74635310ac895fe3. 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/BRACT1606084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6eb0e8a403ceb5c3d2b65920e263d4b414a13b677b76881940383c7669eed3. 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/BRACT1603485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad791c45e976145fbfe1839685bd4e7491b3a82609cc521d19442f28ad3aaa39. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRACT1603636.
Mercosul Baila Baila: Santa Lucia / Casita en Canadá / Giovani y Su Guitarra / La Tierra / Linda Belinda / Granito de Arena / El Mundo / Color de Rosa / Marina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668ce30f15fa75f14483d4d32c607b20634548940897f7b9bf6558274bea682f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BRACT1605321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78d1c9268dace0d929c4fc71eb264aa7c9cb7bcc41cde7abb7d8419cb2bde2b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRACT1600311.
Os Sucessos de Terceira Dimensão Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1090c38a7c54d85cb315a65b5bd2c67085186f168687f5b84246fb9e6e1ba6cf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BRACT0701131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6b9866467b697ab1747708d6f0f31f4a5c6a03726e61a2cbbf614c75561ab3. 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/BRACT1600513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962bed37284bf729a7bd067415ac3136cff4c9c914d68cd7f8ba1e12b08afeab. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BRACT1600518.