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 0xce9d02b22042560176bdea0ccf35dddb09a3c945c1f953d851f0cf823ed67524. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7392e079-3de9-40db-8f88-404e9a02e542.json and https://artists.proofprofile.net/proofs/artist/7392e079-3de9-40db-8f88-404e9a02e542.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 0x2fd39f1e276b920a65e3a5ec983cb0b0e3d214e40bfbf3f024bf86dbc66185da. 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/KRE081700026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721a1e3dc2dc7fed7aebb59c26a4181d1277f2bdf045e005cf19cc32eb2fe805. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRE081700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55489e1bff0d48dbab1ebc395abf6e11ab9398b67340e52fd59e86420105ad6b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRE081700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65dab279f7b1aafc3ee7e543cd7c580b5e086216b8c25153712d1d29b3907a6a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRE081700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095998eac82a81b2e00a7463476e57a3b8dca4bbaf18ef0239ead1a2d0ddecc5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRE081700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416541efe3e20ac4b3fe90d53db995e78dadad221d933abc8b403171adda2578. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/KRE081700024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c20cb8ec094d755de10a4deca39387f8a97c8cf3f1c3cd0109eba55276cf4c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRE081700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c364b1d1d38220deffc39adc63b7bb1d1432bf3c992bab3e5d3997e35a75dc4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRE081700029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bdc28bc2f8af00124f2de65eb03d483f235ee1da5fba86f11d08ecd1585292. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/KRA341754770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d158fd541283ad03b95463cca8736fcdd61f31584217c4dfcc8b93f6e6ad35. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA341754585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042ebafe61554e25ebdb776f8e655c64cc19f4035799e56fe79a5330e61d36c5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA341754586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a9ccf77dd8c1838ef8f605dde0deb00bb45615ffd68a1623c55e6de2f57a17. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA341754587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9640d575e28f17b91ae28f9fa357782bd9318aa07e2ff6e1d383dd16214d5c4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/KRA341754588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ded48d5d206641c67a3e3a9c35d44efe629bf46f2787b2893ab9d9ae621eb5d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/KRA341754589.