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 0xc75cb74a859e85fc870a30790abdcc1f6494741abebcff601fe3bfcb01765d78. 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/bd412b3a-56ec-4b6e-a492-54b39952b353.json and https://artists.proofprofile.net/proofs/artist/bd412b3a-56ec-4b6e-a492-54b39952b353.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 0xd5b0c1b2d6cf6a9384e9078c52d35d61972af3aa83a0413bd4d47a3016b8579d. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/BRL1H1700002.
Moska Apresenta Zoombido: Leo Cavalcanti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc78cafd711ef272e4c6830ab03236a2955778db8f3b4427d0b50009966d69552. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:06:38Z), 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/BRL1H2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83044206b95afb7e4892f50a875ff9cfde6ad637c3f7efd6ccbe681307689c85. 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/BRL1H2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc77b6e3d400e11cc5e6bfa3731f990d7e8a5821916a31d68fc23edf6355a80ce. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRL1H2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7d0df3a08ddc55f8197a0c0cb61bda00fab0b85159eed72e852cc4ab3f9af1. 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/BRL1H2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42156706804c8dc38b9ec852e11a765c2de0de150d342f34397ed1d7e85f3e39. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BRL1H2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4eedf9bf7389c77f78637e875ded54a79bbfedca229b8163e756b2de52864fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRL1H2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665061eaa706d9cb131c1bbb18da8396af798f6c0748fb65df815d2b47614a96. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BRL1H2400004.
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 0xb6ac69bc3d1abfd2b0cbbb81d36f7923150b3a2f52dc3725ac05dcbd23be847b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/BRL1H2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd26d527e1a4f7aa9a10df425505064d679f6f93299a1ce29a020bc7d273cd264. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BRL1H2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3307079d7d678d05bafd994ed4fe93662f84b7be50f4e1c59a920e89de960d53. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/BRL1H2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a99c1acffc57af4de82e7e0d988f1a33c8709f9508b9993a8abf22ccd51b05. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRL1H2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8349ce39a23cb18e8b3e1e39b26748d87260da7b1d2017bf0106cba46ce36be8. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/BRL1H2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0bb2bf2bf3b11cc20d9a8c1636729e002d7236fd9af9638d46914dbeaa9640c. 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/BR10H1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5124af3f39ffbe44877cd03a24c7a9dd7b1b540f19a2f99e1a8062dc4de7f5f6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BROCT1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e4d293ff25311f742c5e273a0527b8e6d85af8fc74079488ef742eff51df28a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/BRZ9C2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cfcb71dbebe57567b4bac85164117c2aaa33e8cd906aa6ad05e3aa2f4b9027. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/BROCT1200001.
Tudo (feat. Filipe Catto, Leo Cavalcanti & Celso Sim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0977518a428757a9d4b3b93bf3d9f9abf66a4f33e9e1d37c680882326ffe2598. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/BR6FG1200012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6fed0ac49499ee8013612c8afa3a36bf1ef369a0e8e05f6695c4a3eb497b60. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USL4R2237818.