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 0x10971502cb63d1ddb81a81afc0604ec1d50e72728c867720dcc53bb9539b27d8. 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/329d22f9-f5d1-41e8-84ab-a1e14514eb81.json and https://artists.proofprofile.net/proofs/artist/329d22f9-f5d1-41e8-84ab-a1e14514eb81.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 0x4dbf14d5a138f318ec04d68c697c696a891d64f85cfd6dbb915c92bfed438999. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/BRAX61600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e254e3f27906ce76118944ae8531bd577a2e522075b3c7cf3f0147efdf526f. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BRAX61600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6adb2ac8c46327d1a917710681f6eb42b67acdc1807eecd87a29baaee88112. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/BRAX61600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb46934ad97159bfe0433f9c9a4aa7dd38c835639e1534776fd34bb661d9a2d88. 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/BRAX61600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc468fa1952c63bea3430c9279f8bd2ee1b00c7af08676932f3a7f4da891e26. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/BRAX61600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b24b26899dc042d90db7b7c8ede8f4e8bd996885e2912caad95efe5e4448811. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/BRAX61600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7e14bc3cc42b8375e97339970414477288d0553302b83988c3c97c56c599a3. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/QZNJW2039124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476d44b578df8e24221612c726a7a8fe4aa999b5f445933aac120cd852ef5d9b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/BCL102100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834f5157e4a10f6882783c95874a4564ec2087880534d9ba739a961b91cc82c6. 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/BC89P2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af7569e35b852a1cb806d264f865e48bbb5a1333cc0b266460fe2e73b7fc88f. 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/BCL102300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8286884a69505712eb07f5aee78ecd85f05fc8b73d5aa1e63d22e59b677aa8bf. 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/BX44O2402319.
Leandro Soares - Era a mão de Deus (Ao Vivo)