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 0xcaef162b19bb88f7a2ff21e55ce2ec1562eda626a3f02bde7b18304582456859. 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/78d09dfc-e13c-4d06-8c07-a8435336e930.json and https://artists.proofprofile.net/proofs/artist/78d09dfc-e13c-4d06-8c07-a8435336e930.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 0xad2e88bfb115a5f2d819b3b2ac62a009f4e47966140ef126801a79fafe48e550. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/BRU4Y1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc046e683ace6747abbe96be53e2de590fdbfb8493943f21d1189422bb775eb40. 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/BRU4Y2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fba95922cd13cde8793f7c1db089bad1db1d4f58353cd24478b9d412a6c8746. 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/BRU4Y2100026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a1e1efe9fc2e679de7b1f6bf51c80004442ef71a1b691f46ac823ca20bbca1. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/BRU4Y2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f73b41399fb715217389c9186cd10e4b91a7b9330f559c83e61e52043f57c6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/BRU4Y2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5fd42414bff454a2ba083d92ee57177e19e26fce0c1c5788a591a33dc24ed3d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/BRU4Y2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd733c5e69b6e155595c14a96fafd1cabaf80c73b404458853cb4f7c4c6a333. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:29Z), 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/BRU4Y2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb977787d29b43e0b5ecd5824d83881995bc8db945a41df52258bc2296fc614b6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/BRU4Y2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418fe9d0e6fb0d09a56c12350616f3f0aa51112b6447c6947801c2500422598e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/BRU4Y2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637b9543d11b5ccfa3815b2de98f53893e59e9bd0f32287ba825f07ffdb51bb0. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:08:47Z), 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/BRU4Y2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420e151bce2f125e43b34b97fd4a7f242833b1f3be37447808966646946914c8. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/BRU4Y2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59429dd81118a283dc34d506587415a721f4016677b4968defec4481d34c21b8. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/BRU4Y2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2989d87b0e32ba495dc9fb896e37ab5a19a2dfc37c5f8aa23e73b9a260cf6a3. 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/BRU4Y2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2989d87b0e32ba495dc9fb896e37ab5a19a2dfc37c5f8aa23e73b9a260cf6a3. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/BRU4Y2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ffa74b713215fdc2c1631dce5c543366fc853e8db5780a8d465dd31333b147. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/BRU4Y2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29f2230bf0674fc2fc117572a7104020235cf2f05184f26057ebf8082f5e716. 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/BRU4Y2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1812dbd351de295788027a25a23327a4561b4ae85648d1af99e9ff007854a0c7. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/BRU4Y2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa081e4b61b1abe5e535a07dddbb4ae042c4b7674a53cca9f77c831cfcd86e941. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BRU4Y2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207bb2426f12ba4bb01f20dd85ed55c358f36ef9aef8c4e79da6dffdc177463c. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:04Z), 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/BRU4Y2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5432e350c2d9216f047bd45eeaba2b1e74b586b52c4e85a25bf7e9340bb0971. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:33:06Z), 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/BRU4Y2100023.