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 0x7c7aed0ec00c2d90a682dcb4d339f5f50067f93ab3ca407737f2d77e01f68c9a. 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/f6501b7e-441c-4354-a124-9c9b0514c858.json and https://artists.proofprofile.net/proofs/artist/f6501b7e-441c-4354-a124-9c9b0514c858.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 0xce90004397dcb6cd8a6409f0a301f9bb81c109cbd4fa812931555abc4e1d0e70. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-17T00:00:02Z), 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/UKMWZ1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b8864021cc2f672edaa413f155d51dd983ffd67c2eff986bfca74a1e9a66f2. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USKO11982169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04363d110447b9b8cbb6e16d01f8f77887231cedc936156253053edff493ec97. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US5ED1900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb706534f399f7c48cb498efa582d4db918bd0abaa2f603bfa365d2a1c78c031e. 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/USKO11982173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fa6ed7ab218f2fae3916a071e2685444f2436128c4e1e35aa632d5b2ffd893. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US5ED2101334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fd943b43578f666c869c8dc5b15f37b7f3d44167c7c6c4d209d97477955229. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US5ED2101335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b3d7a4a1559cbfc84a84f644e080c777afadfcd12d9b8fc4f4a09e1906647dc. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:12:53Z), 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/US5ED2101336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c29b0b56dc7d3e3a2c7aa5c061677965cd01f38f0c9b878d5c2602aec81c88. 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/US5ED2405139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb929e285f945e3272fda841d7b49270610d0f102af202273acffd2c9f181bcf2. 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/US5ED2405140.