Ana Carolina Vilela da Costa (born 6 February 1998) is a Brazilian singer-songwriter, best known for the song "Trem Bala". She became internationally known after her song "Trem Bala" became a viral ph
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 0xe580a4bafa63b58d1013ed245b13d77af02f5a85c6dc10d82fe83cb25298ef28. 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/b2925a56-7d2b-41d6-b8dd-3e0aa2299207.json and https://artists.proofprofile.net/proofs/artist/b2925a56-7d2b-41d6-b8dd-3e0aa2299207.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 0x3b1fa95516bf7c97188c388d9f46100c7d99a40ce4237227e3a5717d2d87a8cc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BRRGE1706116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d7d954b599934e8b475936987d71b31ec2f4aeb22287e4ab0ab9741f605644. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/BRRGE1706117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4d728f7171097eb091fd848237ba92b25972d1259c7c1cb9f9022a621d83f4. 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/BRRGE1706115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368e4526229b6d4a72e221923178fc05f87b9430fe465601a06acaeaa6e356f3. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/BRRGE1706118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2779fd2d70053feceef9f4cde64959f3b15315050e64cfe2bc96bdfd22651bba. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:03:26Z), 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/BRRGE1806575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ecc40abeb6ee51435d5b71b1bab0895f376e3344ff1809918d123203525b921. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BRRGE1906924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc4f2823b6c6683e19f4441375a226d34c7aead4accd98482278287bb4a30d1d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/BRRGE1906925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe863042af09b98beb525b74b43e2365a56fe55422743a622ca142790bcffd8cd. 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/BRRGE1906926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24e4da5fd9f5d21beb67c72372e77c41fbc949ffe177d9be33be4db4b971834. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:44:45Z), 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/BRRGE1906927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e504e18594b4b3a632c55f32b9536be64e5316333d1e22015620817c5b4b45. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/BRRGE1906928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60ccdd1dac6a5a7decca256991a33551cb8fb64a7cd3d40a0413fa58b800dee1. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BRRGE1906929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db7742fe5a62462a301c1eacc4568866a6e76a2f90e802ba498c15f35e9f0d6. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BRYE62100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec01b18e9892d4905c80c25dc3c03e605578b01b07d02ac31e0da6c2dcd4818. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BRYE62300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b31f70ba1c0fe4de8b93bb39ee1bff0969104f0f820e61557f58257595545b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRYE62300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5971b0349afeb0f164fd985b3c597f8ddbfa55e900b6c2f9bf53d231c5eea6d. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/BRYE62300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63a6a055860ff7e288da653c91f269317690fc8123091766fbb27e8831d18de. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:37:14Z), 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/BRYE62300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16402901bf51058482ff9a6d5c49c7a87d4b89e18ed90db87f711e56a1d5b4e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:01:15Z), 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/BRYE62300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6e0bdade3393a3e3f91164f6bf09dd20e294159be6af63dd516e96041b82ba. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BRYE62300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc153cfd8f387af39110dc61a39f82734bec394c9ce18124ae9950478f4141ad8. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRYE62300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac91766ff11252dfdbe6ea515057ba2a91123f43cd36ae8841df8ec315ffc70. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:00:07Z), 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/BRYE62300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b219664c9c3bf2ee22397cd246304f35ca03bfe7618ed088631a2201c459396. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/BRYE62300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e551ac9ebbcb17b618a4ae39167680b39dcf7d3183bf2256c4c2bc08fd062b4. 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/BXNT62208439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e810b33f211707adb460b4859b063a3ee0d6016c064c5c7396153ecf5ada40. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRRGE1705065.
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 0x718eeba4d364db2444c428d7df6ae33096fc6dd593d36b41a47472748bcd0507. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BRRGE1706247.