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 0x5644c82d0f47cbdc90808415978a5b9101b4aa01c1755e82dc24822c4a9fd1e9. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e658f66c-0623-4d32-95c9-c3cb15c1ba4a.json and https://artists.proofprofile.net/proofs/artist/e658f66c-0623-4d32-95c9-c3cb15c1ba4a.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 0x5a22e10b253a3e1c41b17f601a1d52f2662b7239bbf398f09beef9cf7bd3a12a. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXTRN2400631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x380ad75ca958d16eece75e597ca79c849da5b318bab999757c8a900f9ab6876d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/BK89N2500023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4b7b427be102a985418b99c341c24d7817d2a2bf33a3e7d57b661a5284eca3. 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/ESA112558570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf44b7f93bcf1c50c7dd9d95c675adfa18afa1583b3c34582970a8be766c9621. 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/BXTRN2400578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2bdfa3185f84ec7a951aee50cdf85d4a390099a942d79f03172d5251a2b9030. 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/ESA112456579.
Set Fim de Ano (feat. DJ LIPE 011, DJ GUI DA 011 & DJ AUGUSTO ZS)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf729700a15c8f25d34ba8a73eea3fa7db1a4474d93f4ccb0a5ba8397156cf91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA112456934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b320a84c06ce18c19fb8d0e31bf6a2859409dcd15be4d618ce1ee778382177b. 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/BXTRN2400544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63e1b106d2cb3a281f09980c8d09e02b590f60a515f52d9497d4267442cc164. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ESA112446616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9617c3dd115a71da27ba485a109f4b8e7f71fa5b9b6ae588b3f0e585fe68640. 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/QZW9L2415137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581e60bff50e0e1a1d32657c934f139b6148de592fff5f4190842b571e601d60. 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/ESA112444981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd6979c50ddd5dc489be17a7230d074ba94d69bb8de53b2720c50eef64ad8ea. 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/ESA112443594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4410bbc67f691ea8f4c64cbc050042ddcf762a275be9373cc47e637fecfb837b. 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/BC3PG2330988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e17f4fffc33c3ab81fc3340959f5336b034028b485e864ee2080474e80a733. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BC3PG2331018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cd5e1cd5af9c94d7494c3458157f1f08997ae45d685822d6cfed0a6842eab5. 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/ESA112324747.