1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x28b02f49b1fffcbf979d96af25521ff4acf7316669dd6c333326b947c1b7ffb9. Chain 2 (Bitcoin): anchored in block 954638 (2026-06-21T03:45:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d369081e-e499-4e74-8947-29a5e5cb6dce.json and https://artists.proofprofile.net/proofs/artist/d369081e-e499-4e74-8947-29a5e5cb6dce.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 → block OTSBitcoinBlock must exist at that height 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 0xf0692c22d32e425981d5457db58bfb713dd34c9a88276a7fa9402d398631edcf. 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/USA2B2401980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ce166f1c8f534edd9eb0ed5d06aeaa6e65d6bc58dd2cff58f3e0515e541c5c. 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/BRQ8A2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213a4c0213a38ee6239df7e9f98c64275e1f052a66e260812b4f0891ba3a08a1. 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/BRQ8A2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8978e4b554993ee53f285c45f3d36bfa191d0dbb6f61322ea30f745a39ea2e65. 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/BRQ8A2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fc162abed02be831df2310553baf4063ccc530b9beb0ebfb72e947615ce673. 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/BRQ8A2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d20262c8d81bff45ba8ce64abe068d5bddd36fbbc3a290f412784a2578e0d72. 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/BRQ8A2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x071c27c5d2f5f35fda94aff37d509d5c5ef22e352dd65b9a1404c45e93975d51. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BRQ8A2500009.
Eu sou free / To bom, no tom / Arma Sutil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83edd5cae27d11935460c564adbd9b54b7caf720c9fe873b26976650c0b8f08. 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/BR3R22200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103f97b78523121de6d91b32378096bda2b7a594ab2538326ddb80d3d164fb14. 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/BR3R22200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc55f6b12dd66ca7b8f70f639612bbda5cd02cb5cc20a3ab8d91f04b929cf0. 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/BR3R22200016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf812daa4eda9cd01249a8285eda3bed96418a3dfb4eba191e732c9ba0e897166. 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/BR3R22200017.