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 0x49bef5a14d7ef1e031893990382e71d9b3598f197d79428f0d9252e0d03e6d84. 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/f0a4899d-2a6a-4bd5-94d0-4655c6e8ba07.json and https://artists.proofprofile.net/proofs/artist/f0a4899d-2a6a-4bd5-94d0-4655c6e8ba07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bota Em Você Machuca (feat. Flow Key, Bernax e DJ RD)
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 0x67ec820ecffd3e53dda99ba3951786aca5eab5589fe97a0bfc2c4e0620a30054. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BC3PG2200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf096bd50397f5cfa1c74edc1914275618fb406a063e6548fb90c3e6171d8e3c9. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZHZ62038565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3427477b656dd84b4a6569db327aad2f7e73258281afa3441fa79e9b833c9615. 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/BC3PG2200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3374e6de62cf30178c695560019fd804057fe560face8151c4cf76f3221aa85a. 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/BC3PG2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518182408c37c514ec49d2617e005d4e84eae58cca0a07e006d5171ed3975537. 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/BC3PG2200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009140f5d0654747f6a24a2ba85059434f3496beba9679537f6249ee59eac20a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/BC3PG2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90450e97771cf030e22ca2b483c16e45c82461d7264724f7d0ecc568519f8ef9. 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/BC3PG2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ec820ecffd3e53dda99ba3951786aca5eab5589fe97a0bfc2c4e0620a30054. 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/BC3PG2200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90450e97771cf030e22ca2b483c16e45c82461d7264724f7d0ecc568519f8ef9. 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/BC3PG2200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009140f5d0654747f6a24a2ba85059434f3496beba9679537f6249ee59eac20a. 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/BC3PG2200035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x518182408c37c514ec49d2617e005d4e84eae58cca0a07e006d5171ed3975537. 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/BC3PG2200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3427477b656dd84b4a6569db327aad2f7e73258281afa3441fa79e9b833c9615. 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/BC3PG2200223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3374e6de62cf30178c695560019fd804057fe560face8151c4cf76f3221aa85a. 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/BC3PG2200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07ea469aa4441e6e63d0da54697a8ffb6c556c3e6a1ffb0eda03a066d753809. 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/BCY422200003.