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 0xb55c08f0cd7e24363af77d791206ad3cf6cc7d6833821f92a41f85f19db3cbe1. 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/a633870d-27dd-4505-9f7c-d41fae3dca03.json and https://artists.proofprofile.net/proofs/artist/a633870d-27dd-4505-9f7c-d41fae3dca03.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 0x69bbbd79f72a59636d7cc86d5867345d292e5de119d900e058c751f21657dcf4. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/BRBLD1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c8e29a5bb09e5ab8ee766a247347a6e70394483ce1f16922b77e22b61104d1. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/BRBLD1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae933b86797e73e21777cd0bcf3fb2a7ae2148a2febb5a8582176e6131c1b071. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BRBLD1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f67ecb15d67538f0e912ef56f91193bfc2f95b99670169e9acf790e23f24c99. 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/BKL7L2300001.
Como um Caso de Amor / Quem Tá Duro, Reza Pra Chover / Água de Chuva no Mar / Aceita Paixão / É Pra Ficar / Camará
Nada Pra Fazer / Ao Seu Lado / Até Me Afogar
O Amor É Fato / Retrato Cantado De Um Amor / Desejo Contido
Sinais De Fogo / Você Me Vira A Cabeça / Palco / Gatas Extraordinárias / Olhos Coloridos
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f14633976829b501179f8c0e3a137f9af8876147d40e19ba3b6c242e1091db. 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/BXP9D2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070f1d7a64c663f3b441555455a1ec18c92f4ade9729e7fd52436d99f03e0a6e. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/BXP9D2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af58ffa852a4e8443313ad0317a232ab30edd71782f5184628771998b00e8e0. 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/BXP9D2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835d990216196b56d7b7aa7b740d9c39d8ddbf1b37e8a26c167eb7a277e7fc90. 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/BXP9D2400019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d23ccf84bfe721acd1ec2ea73d723a1d248237568bc5d20788a4d1a1618ad6. 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/BXP9D2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab03a361b45a51b7833a5154b73b1d61baecec585766ffe0db2581f313b1c274. 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/BXP9D2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3fe41fee1f9466a00b4ca0c9653961395c98cfbf512545ff8e479008475b0a6. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/BXP9D2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb2b19598642ce016a4b91e7bea3bf872822128cd29ab057bd479ad3f88b7245. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/BXP9D2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268713844100316312b1a18e1fcd43e191738eb5aaf5da3b16beac16b3b21e53. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BX0181700004.
Marquinhos Sensação 30 Anos, Pt. 1 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b344772a901bf696c1c933045c465bdd2594fe8c5133ffb7a68c0f486e18dd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZGLM2276467.