Tribalistas () is a Brazilian supergroup consisting of Arnaldo Antunes (ex-Titãs), Marisa Monte and Carlinhos Brown (Timbalada). Their debut collaboration resulted in the popular album Tribalistas, re
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0235d9e33b7c0e6d7b4b29e6aac7d69f7444c9d2114c32a2e4064401875b290e. 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/8950d641-8861-4590-a461-7a3ebcd20cb7.json and https://artists.proofprofile.net/proofs/artist/8950d641-8861-4590-a461-7a3ebcd20cb7.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f61ed3cd46f51c5f4de16d86fab79b6e5696ad09d141d7852036e531059dc3d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/BRONE1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b1d2bc0779a22c55ff36526f663b69f1f4350c7cd012268789693138ff65bf. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/BRONE1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c187a668311c6d2ccdb9fc0615416537288b97eb24434791fa5499c97b32c93. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/BRONE1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1850e7ea4d321869d5531cc9f459f9bb75ce01a5ca8fdd0607c94584f9bedbec. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BRONE1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4623c51bb1072fff55bc647b91d46f8a7caa99aecf252d762c6022a3ba01e4eb. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/BRONE1900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5131afbc62563f9c779c882e6e277bf4fd4d742e676d6994708379929e236605. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:04:06Z), 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/BRONE1900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f9d44bca805fafddfd4cd0716b6f193c462aef2d5c5f60527dc7ae5de33a9b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/BRONE1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa36ea701fd494042f33ed461898dfff8d9f2b9790f12ba44cccb8bebfd8aa0a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-17T03:31:14Z), 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/BRONE1900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6cbee1fbc05f61999f3abb59a1fbc36ed1b41fb61e6a03f7b5b164d00e3a50b. 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/BRPUI0700618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ac81517164c612d906105be7994ddcfbbb176927b835226771e516cb3defb8. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRPUI2000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef9471d3b529d68861dd1c38c1b683c6741554f2a0c277fe130216d348e1530e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRCA62200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a03fa29d74e77b8f5d891f660d8f5af406cf518fb8c949b9a92b25670a73e7a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BRCA62200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212f43122e07c7232627499bd3b6e246591c24c89bb1df285ee1fef8bb713649. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRCA62200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1013e21b25a893ea131a52509d647edd0f9ba9209eb275c924a9c9933c521fcc. 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/BRCA62200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324a0c7bfc406a22266ad274ac6cd086b867920b6f2adffe84372605385c500c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BRCA62200041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5306d219165a22b555761687a4e2324d6670b95354afbf58bb2d02cba872ee25. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BRCA62200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d69a8da24e3f94956c4d064a001c892855045cf3e31bd8dd3616eb754b8519. 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/BRCA62200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1013e21b25a893ea131a52509d647edd0f9ba9209eb275c924a9c9933c521fcc. 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/BRCA62200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0a5b5fbaf05a917ad8d9e0b5f03ddabf91a687512b179e27c2049dc7fd6dc2b. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/BRONE1800007.
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 0x855dbdd2f48199c6a4d56790f5445d6f2c0ae099a7d417d9f7d3e9d3088e682d. 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/BRPUI2000330.