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 0x78bd8278bc01cc410d87ab1253d8ae54e6c948758199cddf01c384bd2ce5dcc4. 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/7f32068c-07da-439d-9289-7072cd28c3fd.json and https://artists.proofprofile.net/proofs/artist/7f32068c-07da-439d-9289-7072cd28c3fd.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 0xbfaf5d4b14e74c064f8cecadf7e414ad239447075cbd001b1f7d9a4eb9533ab0. 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/BRV7W1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e2efae562137696da6a1e0f8ea07581fcf0586c0442eddd750633372e7b0ad. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BXKBP2200047.
Fundamental - Teresa Cristina e Grupo Semente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba275d1a844e85fa3bd65c4d00c373930f56a6fe36da564b5d658da8d36787e. 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/BRDEP0400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44605c3d79bde2fc9acc31fd70a608f2e83e6de9b2850aa4eeea84def86cb22d. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/BRDEP0200273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc261febd6280446b88137214c829aa1f8834df09b6c6082f5f45bf86182fec5. 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/BRDEP0400033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030af6df10f39a927ba1a03324b4941447e0972108fb8ffa239335693c6ef2e1. 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/BRDEP0200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836d493bfd52dfe3cbd067139ef3e61cd5bfd3354d7ac009a341fc9395134119. 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/BRDEP0400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec9cea0f9f1fdad25d9bb31944be8cd84e58e729a617168ae66c1dca830ede2. 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/BRDEP0200266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8f8df6c10f38ebcebcc2b173aa410f2a56398b8f3d94001e90da65999be40f. 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/BRDEP0200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308b61dc03dd0faf0d6efa61ac6e96b124dfc360f885bc93a8ce2e7695fed41. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BRDEP0400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d8f7cc91d9df7cf722d69fcb42e32571e9a758141507fa0395faaa138c5297. 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/BRDEP0200277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e822089b64fea21016492651436a2f8b7e32f0fc0791ecdf89a0c935b986667. 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/BRDEP0200285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63dc8295eb2f67bb6fe74480dbeb260cc13390b7784250088d134aa891e25a29. 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/BRDEP0500343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92aaa02df6477ed7c5cc1fcf04790eea94f345eafb302657737b264e4a88156. 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/BRDEP0500341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37efd281b040d321fc64e754a4fe5a4fd9d6ec90126fcc695a99e475265bef1b. 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/BRDEP0500342.
Onde a Dor Não Tem Razão / Coração Leviano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173745a04d913ca5264925beb9b8dfc89e02f1db78948c2d9c8f00c558754121. 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/BRDEP0500340.
Eu Sou Assim - O Melhor de Teresa Cristina e Grupo Semente
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44101c8ec0f8b27b02ffdc2db4a2b6848293762fd8e8b45426530732c9842231. 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/BRDEP0200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0308b61dc03dd0faf0d6efa61ac6e96b124dfc360f885bc93a8ce2e7695fed41. 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/BRDEP0400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93356affd2eda9ed17cc7f6578f54561e18e88720d34f6c7e0356a6eabb67ca7. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/BRDEP0800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba275d1a844e85fa3bd65c4d00c373930f56a6fe36da564b5d658da8d36787e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRDEP0400043.