Carioca ( or ) is a demonym used to refer to residents of the city of Rio de Janeiro, in Brazil and their culture. Like other Brazilians, Cariocas speak Portuguese. The carioca accent and sociolect
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 0xee74fa0f1ef951dbab78f653d85e7f72aadd0cd0aeb7a6e63b6eee6f270d8845. 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/1d3ea6e1-6b48-4dba-b036-4066805a1db0.json and https://artists.proofprofile.net/proofs/artist/1d3ea6e1-6b48-4dba-b036-4066805a1db0.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 0x5eaf37d6628e44e5046b206a770557deeabc65d226f2f91d740942a731facd56. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USHM80830513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9689cd20584217ae9d942923321fd99f272ec767529b8038afaeb9b1ee5d511. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/USHM80830517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d8c1db91e24951b3a5749051dbf3b8b458810ff9bc545c34a1272628140c815. 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/BRAOU0400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80454fb8652ae245db28ff62bc1009be32ccbe89f40993d7544ccebd741df5eb. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BRAOU0400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14377b836fc1a8e61a70ba0854c11dc72f15e649e7de697393965079f43e183. 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/BRAOU0400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x067c817bdbd556b6b4dedd8f78a4254beb15ca9ed9644bf56f779c56271e66cd. 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/BRAOU0400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc784e119b722a25067b71799b81edc0ac0d45df3e05e65c47e8f29f3d69c2b91. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRAOU0400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7989dc59dd5281f79bac9880dd5fc29d5215e935abd882d218db98c8594487c5. 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/BRAOU0400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58795f7c126f5a3106e17a8fb89ffdb004eba35aa80e3e03e4cbd8c7dbb2bcd. 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/BRAOU0400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a2f27d3b52ba7baf6573c2d73a245204f32653a5934347c3a3241512099a2. 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/BRAOU0400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437a54719bf5503df38a4c53eebd011c404db1a78b5722b5885284c2e318e015. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/BRAOU0400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dbd83db30b2dc33d1ec180f7353ec4c04dd11b335026bf73100af439df147f3. 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/BRAOU0400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcdf950913795c07158ef3e3c967f3977e5233e341a8068f269f9e08c06705ed. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BRAOU0400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14e54a86e1d15cd1327602d62d58c95d781b5614809c6d9b48c12dfd0d798254. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/BRAOU0400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddd9d630483e091c5a4ba5141b786fed1c7823dc7a3e2b86b12491f6abbea83. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRAOU0400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821484bed6c5e783dd521fba4ccc77c3fad59d986b1622a551fc4a0f9d48390e. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/USHM20840288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35eea371ca27422f88fbe8a972fd028c5de59d5c59e6f16bd5576a5232d5b26. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USHM20840289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580556459acd6d4b11447de7f27f354a7a4afb0404f0b8dd3d0241c493afce40. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USHM20840290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fd6067697a53654b6d5575b93ad5fd7e84e2988275f9b759434e2363a542e8. 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/USHM20840291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce02424ab6496d37918b30c8ef5e1aa207c6503858b91733e39d9e9475be9a96. 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/USL4Q2018017.
50 Aniversario del Triunfo de la Revolución
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0d79f0395f05e5b0792b3fd7e7f74a3e506d26cbe17a740252ff4fc506486b. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QMFMG1397280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec30738af2f3ef6816ce7429f597cc8e085dc102ae555f762b4c6b38b456698. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/QMFMG1397281.