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 0xda138bb11115a7df0866d3f45e6e6d58bca980b026b1b69c9b91983a96418c1b. 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/da8158f3-4e00-4fd5-a61b-e15904fc2386.json and https://artists.proofprofile.net/proofs/artist/da8158f3-4e00-4fd5-a61b-e15904fc2386.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 0x4dc6a7979cb7a664295d0eff902f1458104ff4d9e40237e983a4c184584aa4a3. 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/BXYGH1900002.
Quando Jesus Estendeu Sua Mão (Acústico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bd26b352e215b5ecee86dce8cb247c801077e52b38fbf6fadd166e70e76b0a. 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/BXYGH1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c695a11aa374c9163b1832f50932bd3d055753245e802ebc1db8346e6bea3f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHZ32185434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea9e33689e973e935c0a8a2079ea135b9fdf6a43de7883201317594f6c8c8d5. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BX8XA2200015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x759ae1663aeae8a146a4f2b697929a1e4d0299064a987bbfeba8607425d03390. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BXYGH2200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa4a8d7101fd6d0759abd39197298b968bc359946c216dcfeb88186e5fe7922. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/BXYGH2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b7b19cac47ac0b7b132ac8b2fd92de7ccee92bb2cca566f22800606d9e529e. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/BXYGH2200013.
Quero Conhecer Jesus (feat. Deleo) [Ao Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9ae66b66a8fbe3ad8b03a382c8434f46f68d4d01e3c2478e939d550dd1f862. 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/BXYGH2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa8a89d9f0007b22ed26942f2fa3614a0c9e089235f3d22427136819cb5c6c1. 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/BXYGH2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0318f13b46fcc649990ffd54cb057947f3a1b032f962a4e797264fc58f82cf. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BXYGH2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed91aee1981fdacfab606f8e4ca0ad9c0990eb344814740f3c8e99acb15b65c. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/BXYGH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4312ecd55ef8eafa9bdbd1831fdd07b93b827d3d10c78716d53e199e5226e9. 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/BXYGH2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c49ccd265abceb9f981851838399e78127bf852866717faa083a365059bcd0. 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/BXYGH2400004.
Eu Descansarei / Hino da Vitória - One (Ao Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fa895a5dde390dbd2231421fd42fe3faaa7ec0ece3961a6d582c75b165f1ed. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/BXYGH2500029.