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 0xe0ec610f1aee1bb9ecb82fea6a37cf0f9abc2eee1b4a9c1a304c039fc931c2cc. 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/2e68a791-b429-4ca6-aa37-1dc5f914f382.json and https://artists.proofprofile.net/proofs/artist/2e68a791-b429-4ca6-aa37-1dc5f914f382.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 0x263eeac46727f100da30e3b9f66a5de204d610d83220c51df112df917f812655. 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/BCM8E2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b70c9cb178a07c385384525e8b7d7f9b2c75598b00fd4313b68f5a3655aa313. 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/BRRGE2400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aad7e2a9d4674db3dd7d90f9ff843a30bd60fe0851bbc4252e516c9224c6149. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/BCDE52100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bea913984c92cd08bfe3697000b90a150bfc11fad7f493adc4a9745f49db5a. 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/BKGHG2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37bea913984c92cd08bfe3697000b90a150bfc11fad7f493adc4a9745f49db5a. 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/BKGHG2400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38af27bc89ae115bd91ad397b21e77612e29c2569157357aed35de4a33712ccc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/BXYNY2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd480fb3cd690c9a07dacba75b5ab303e6e18054cce7b25d1c17ece0db404a7a. 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/BCR6R2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3562110a9238653188dd3460a8001a814889641f02c35c81c678a4382a2a96f3. 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/BRRGE2300934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712759770f28e4f3e527ae6cdb70ec66308da444eb2ba3d222f1e5cb22deed06. 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/BK4T62400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c170de0e65ff8f8ea4bf06ed2830eda808bab7cf99f4ca8d726798751ba2062. 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/QZTPX2486526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457889ae8ff68f1762606609652e7371b91be35f77bda2f4f557f829e8b14269. 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/BC29Q2300099.
Amanhã / Loucura do Seu Coração - Ao Vivo
Sorriso Eu Gosto No Pagode - Parte 2 (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c18c956904790211fe53c19247ffab8821250aadb1df11c1d4eb999efc4a82. 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/BXS8V2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff4ae294740edeb7c58d067a5693e7798c603cd27aa4d7e4744d2333fbac176. 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/BXS8V2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c18c956904790211fe53c19247ffab8821250aadb1df11c1d4eb999efc4a82. 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/BXS8V2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff4ae294740edeb7c58d067a5693e7798c603cd27aa4d7e4744d2333fbac176. 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/BXS8V2300023.
Ontem Eu Tinha Certeza (Hoje Eu Tenho Mais)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241f2e08e7d71c64d2a9fc322236836f76dc46eb678066f5403df95989e9ca0f. 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/BCDJT2400006.