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 0x20e3ab3c2a65ba8c6d24f70948377d43bb4c6741a5e53cb518ffa8000132ee7c. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d3271a90-356c-4fe3-b498-ac26b399797e.json and https://artists.proofprofile.net/proofs/artist/d3271a90-356c-4fe3-b498-ac26b399797e.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 0x69267607e9f5a4f70c886b71f91ea563d922e0b3b66776c09b135cffb4a8aa8e. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:00:27Z), 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/JP92S2413664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef1540e42553624c0653ea4af053e5f7dc82b512a44a19d8df4c6548329a923b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92S2413663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef5874c390d19be0d68aca20e60f48f0992c9912e20ad4ed2c90819caec2b6b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JP92S2413662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a0897bf541ca83c833efcf0b9f8482a56e45e95880a4e73e9eb1c19c2fcbc5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/JP92S2413661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906c4a2fe5fc0e2c0a0cf8c6440aa97cbf30ef4f8369a2bb4bd98f8ce8e6c487. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:46:28Z), 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/JP92S2413660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125a6f5b741b6bca6e4caaea77830b24e16a0a357ad0266704a471ca2849e391. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:23:11Z), 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/JP92S2413659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fca1ee028ef6910d8307122959445450ca66001799ae527a887107de9a4ff2f. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:20:00Z), 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/JP92S2413657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f4fee82129eb7543e1eed6cafd8f8e7ba2c344476acaea9e997437d3e4a523. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JP92S2413656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa2536714c6dbdb8c45f3f68a3f250a8c3ae11c92a0e27792fe6df4a45508c6f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JP92S2413655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165e5e33fe035817308010de6df1eee1fd92eda578816426f085de88a62b2c23. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:07:41Z), 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/JP92S2413654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ace793613ae1856462da9a8454e6f2222b31e8ae860a67afe104bf04f460068. 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/JP92S2413652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe90fd41b46698ff80fc24d90c399b5fbd57e5eb566293bb99ebfe7ca7424cbc3. 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/JP92S2413651.