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 0x90e0e43e6b39d458fd25a0464100d268d72ab04ab58b8b64710628b30e6d1bbc. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/819da19f-e345-4ee6-9f40-23c16b9f1bd1.json and https://artists.proofprofile.net/proofs/artist/819da19f-e345-4ee6-9f40-23c16b9f1bd1.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 0xaed2a866fa37f374ee8c0f6529cac3a326e2e41b4ffc4622e03f498608f86ca4. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/INI112177939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93b9f7cde51d5bad495e81152cc77b7c3b7da8fc1deaefece3e5ad36d4ea15c2. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/IND832400501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643ac2049773b250914f15fe1077afd354c4b703dfc5266a140f8cfc47889aaf. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/IND832400932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffaafb00e5da0561a0c43262a3d86d01f198693b318f70194a7efe8d155ec00. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/IND832400502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a70be8afa655e7ce3108018e8eb780bc25991c4fb29633f4893950074f1578. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/IND832400467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a534184d5490316784a35d052786ad2fc041301b53da00563cc5592ff03bfc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IND832400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab206a78783e1a8bae646c664fe4b38a8b3e2594733487383f7b39e082441cad. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IND832402254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb5f87de73c87b3984130ec2952664f7a00c7d33b06db2ac73cbb81cd166625. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/IND832403953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7613cc8dac6d655144fe790621f3d8b3cbe515590d5e0a59f07b1379e886ce2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IND832404148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5a43eb7e7652b9ec547f762fadab6c012f0edc5861390e3826aa6a9da68e0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IND832404257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf258d911a19d9e21acfecbb0407d07cf36ccfdbb8d7a30a22a9991426f128b31. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IND832500305.
Mone Serma Purawen (Atnahgoda Baha Doson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174aa7ceb052a88181a63277402dfa1acbef5aacfbaa6662934466b6cabff3db. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/IND832500956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d276b59e821f1c20f40e5e3f471f2c67b54338f292541dc88d25bbe33dadd3. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:43:15Z), 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/ING212530583.
Alom Mananj Pela Dada (Champauda Prize Jom)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de3186f6d3abb6d4f6026fd0cf4b013d0aa144d1c2aa31412ae39d5393384e5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ING212531555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efa19517dcb1effcc9bd230916810693dda3428a9babcbdc5f6e013873d7a3f. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ING212535363.