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 0xa28e678f6cb5f980d8e124ef21e2f87dac0dce721e63d7f903af081fdfc971e9. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fa8f9e7d-32e6-4bd4-b388-1093d8d17312.json and https://artists.proofprofile.net/proofs/artist/fa8f9e7d-32e6-4bd4-b388-1093d8d17312.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 0xf2c721a3826167e6bbba0d59566f9d49144d1b5ee6e8188d04d816393e264710. 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/FIMGM0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325f352b359a7a72a20b34c99252b11f94bbbe93846767ba5568372c8199aa40. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FIMGM0700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a431c6b2c218d667e8ed82c23e60f4e6fdd2f5ee962044b02f27d2cb60aae8. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:26:10Z), 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/FIMGM0700014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a29ba6720f8d2adcc38c06bac01869d599023dfa95f453e783c4cdea1b1ddbb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FIMGM0700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55133f2710cb7fbd3ccd9cf032fb7173eb77a987c66f0040bf387af5fcfa1ef. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FIMGM0800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5536e7d320f21e2109fd2ebb8e563e754737fe2e8c5cf7a1a305bf2f85fabc2. 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/FIMGM0800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8d552e903a54af238613bac3d96d34c27c6b0580dfe7e464746e4e00a5ca5d. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/FIMGM0800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49edcd49404cf8463ce6661f26ce2f2e2efbd33401c7d77a1448438109205a81. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FIMGM0800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4319da153e141e511e1bfbb043baf9c025004569bf01b611f50687363688f5c. 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/FIMGM0800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfe522215af11a0ed86539fffb50a9cbfb7a1b76680bc11371badfe1f0c2621. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/FIMGM1000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14deba56a09cb1f0d8ae8a858b88e11567f848fd65cf00084d8b94094aa8429e. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FIMGM2300020.