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 0xa303225153aa81f19d96b6dc30dac56fa9e307f90234936e4ea191b546e0fb51. 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/972c24d0-a723-4f8c-bf6b-b7a29beec406.json and https://artists.proofprofile.net/proofs/artist/972c24d0-a723-4f8c-bf6b-b7a29beec406.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 0x729e89498efc7b6f87e4c349d95ed413c59d41075b903172a8723e4b4dc5f242. 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/BRUKM1400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb190b9147abea2eb1bb87c63c72e9d67c3290c564acba66e89f3ef53d1bff35d. 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/BRUKM1400032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x869c384717d35b68892b69ed2b3f9b1bd1b28a5fffe3c05f3b6bdfb0b7224fb8. 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/BRUKM1400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71110aabf4bb68a7dd535b4e6d4833895e8b5c9bd41b94e3bdd23af90c715ac1. 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/BRUKM1400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce7e980757822a5bef2807d037097057423fe1486a34229dc6735598e3852dd8. 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/BRUKM1400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b804e6fa9d22c33d617baf96b77190342b4c8bb1a5ad69e4e7193fbd5f7e3e. 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/BRUKM1400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd567f33dfb333094213df3426a1e15862cfde0a6609a0faa7bb97841a80fa7. 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/BRUKM1400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7152432acde161b72bb94b8b0aeed818f05aba295765c4f3ccbc48ae6ae2b1b. 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/BRUKM1400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193725ae6c59c01029e395770c85708ed92207c4069e392369a6fe555af288f0. 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/BRUKM1400029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d93466bfda7ace058ecf930f1e579519d0cddadb26c82df72b398be64456126. 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/BRUKM1400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf08468b6fdd8d99b59bb868b6d41eec8a94d9d2d31ee8b57bd0710ada6c947b. 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/BRUKM1400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4befa682eb569b8269270710d0eb51f0c8cc8da2a09653c8d666c5661c905e26. 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/BRUKM1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbc9cb6d662dccfb82e90ced1f17bbdc2646894cf109cd3203c404e74058eea. 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/BRUKM1400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e11a949230f2a0a5f2d78798481de5a74990764978bf1dd5181c42c71d98f62. 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/BRUKM1400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb5e6870856a22655c41801fa30bd9ff23391b8aebdb42d4b9c9b699aeae959. 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/BRUKM1400042.
Pot-Pourri em Torno do Zeca: Camarão que Dorme a Onda Leva / Brincadeira Tem Hora / Lama Nas Ruas / Judia de Mim / Não Sou Mais Disso / Quem É Ela?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5369daa66d9dac5d8035e07345216ce59df1d2bb047cb626428b35306574566. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/BRUKM1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eec0dbf1c94ad1053a364c3ef124867d61018d2a366e32bb28b9e62e6581128. 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/BRUKM1400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbc9cb6d662dccfb82e90ced1f17bbdc2646894cf109cd3203c404e74058eea. 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/BRUKM1400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e11a949230f2a0a5f2d78798481de5a74990764978bf1dd5181c42c71d98f62. 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/BRUKM1400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb5e6870856a22655c41801fa30bd9ff23391b8aebdb42d4b9c9b699aeae959. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/BRUKM1400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c5f65988d4362c684c1f8ced94b443aea66e0585dac0bd0a55380c6adfd1ddb. 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/BRUKM1500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e130b6bcbc765c4bb9cc6d34b5cb74fee2fb36d6558ab15b45178e3a9270a6d. 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/BRUKM1500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f556e0cc54c7aabfab416a3432bce5d567423297f8b70def51c221ae0b0342. 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/BRUKM1500016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb45e0123ff4f7bb0e6626602e9a4e1687076edc2777d79d90a586518b92c7049. 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/BRUKM1500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15e791383e9bb593c06e669ac532df5f7ab1cdc651ac60bb4404a825d0ef5fb. 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/BRUKM1500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5594602cb77cb1d20700032d84eec756cd022736a0bdef3c2962426b5b81f1c1. 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/BRUKM1500019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0235689fb77f7cee401cc63bbb33fb99b3ad957ffef52206c59cb8f40a57279e. 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/BRUKM1500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5769b3cb3baf05b17d9831fbfd1e8f06203045163c96f977ad58c63f803a90. 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/BRUKM1500021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e21b985a6aee54991a68b87c67dbb3d4376f66587baa7f6953295ee9cfa0f5. 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/BRUKM1500022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa844da3632a19da4c209cad7a4c18d7ceaa4879ceb64707f2fd6461a16447000. 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/BRUKM1500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a87305f628207ed53f42f47aaae117dd8b21fbefd112f5f83cd34215e674084. 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/BRUKM1500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x768656a2d82578030cd03812eafdab42b0d2f55f6a8e3300020f72a5a7fdfb22. 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/BRUKM1500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839be03b00bfa75a3938d3c0af7f6ef9240aea35d462d5eb1ddb6e40eb179c05. 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/BRUKM1500026.