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 0x6598591dea886374c02c9a67959502d49b2e7060d72108f1c262344ab09df6fd. 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/d7a40d5d-d9a3-4948-80a8-96fef37a7cd4.json and https://artists.proofprofile.net/proofs/artist/d7a40d5d-d9a3-4948-80a8-96fef37a7cd4.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 0x6aa65bece544ca9acadae753ce69dd8ccd812ac41c59ec085a300f65f4c861e3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NL8RL2413124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45df9d959807805ece20ef932008d1071f597c74d539b9bd432c1c3517f51e4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BK1P72400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aef743b3dc758a1e26dbd4372e8758770f4e4f4075112c8c3264348075b2c1f. 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/ESA112441973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0577de510f5f42d95898eded8332181d06593b452bc3d36d4fda75c78490190. 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/BXNT62209126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ac05c4495f65b99dc21a245c435055a5611f3a510f427f62d80c9b04878fdd5. 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/BK1P72400026.
Agrocypher Volume 1 (feat. Mc Swee, Cello, Seu Terim, Anarelli, Mc treco & Mc Kelzinho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2978d1665975248b59d775bb6707ec18cb71a28ec299f00b162a7ea88e85a1cd. 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/ESA112436540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f9cb1a060674921b3e0507dd74c061b9f93710cfdb49583f62b8a85378596f. 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/NLRD52354711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ada873345cb662ffc8627e402236bdf934b69219dc8427a428a77e60d800711. 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/NL8RL2402671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218d403f45904eefa7d71d9c82337652288adb4eb328a825925c7095223e0696. 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/BKTKU2500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056fc7bdbc00ec3e8d654de2ab71224c87f36b411d86eca083f6c789151a8adf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BKTKU2400065.