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 0xfc367477da2137d0f338d1ded8ae539b5540857bac445453af294de2c70d34ea. 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/d7dbcdb4-7c44-4a8b-9c6b-76f3e3695030.json and https://artists.proofprofile.net/proofs/artist/d7dbcdb4-7c44-4a8b-9c6b-76f3e3695030.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 0x45d3f019385024283f493757ea5032a408f7efec7b86d2f3b2b16622958d2019. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/USHM22397071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9062c26b0f4d3c51110ff6d95a19884d77d067e31c095e4e5c0db3e81d58f4ca. 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/USHM22397075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0708130dc9454e7ffb1577e7ddf20da7d466f03701cff24b67cacb9feea235c3. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:17:22Z), 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/USHM22397077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd9a7b502168e4048b53fe6bb25059f0446c8b144a87ac203449208584546c6c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM22397082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809518b148fe9f542d6905d7473d5453b0389d60531d40866c2716b273d4f9b6. 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/USHM22397085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eba8874836aa354ba10cf224ef39396a26c0f30435f3da3cc6afeff47fd21ce. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/USHM22397087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a9a4327cdab61d7be1a8ba96951406a332a6dd4234b609eedb13549334271. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USHM22397089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987bb96511a29bd42e7a46431ea09b7258d0a512856c8a25f3df5e9b0c6e6c7e. 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/USHM82316327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d3c1a50e2757fea7f5045cef5a4f8fd27114eb3d500a96215b81dec3c023d4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM82316330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb524691708ef61ca8db4af0b69c8735ddd4e8e8f31cd0a55e68bef5ec891c25. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:11:33Z), 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/USHM82316336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e7cc30bb8cf11d29f4f4fb9777762d8032cc5c66d1ac2a153ee717e8ea323c. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USHM82383344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bbbfa95208b014a0cd328e75acf3afc990597fb130b7f87624d23c375f676d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM82383349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785a8a2a0b8c3b9aafaf1f2b6a15c12d5feabbbb3b79b6d23783254336713eab. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZWFP2423024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc1e13f4fe94348ffc86b61bd01cc59732284a6599be734579863604b3a8548. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:34Z), 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/QT3F22495735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dbbf32654e7b39d17eb439f90e56ae8d558f974b826afbfd467f0c0c11deba. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:32:35Z), 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/QZZ7V2467959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ad820fb6b3868aa127d3f06a5fdc87dd1f6c0caf317dc918a0fea29255b2fa. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:07:35Z), 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/QT3F22495737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395b69b2c020ccb8df6ca6bce1c3427101d1e3215ddaa45ef2f11e68ed9eab38. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:57:05Z), 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/QT3F22495739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be913a5ed4936e757fdbae32423c1655fb77b49a665910dc50d1343b01cc69f. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/QZK6Q2543935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x622e1543ddbd1e1e763d26f35799922e86949141cc10860e381e8491307c3b9d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWQ2523726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c06591f0522b367d282243e1cd1d717cdff4930614468c5424e07ef5e9f45b. 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/QZRP42585978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa033e1527359069cad9621ae33ba7ab19ce2ed70670bb03937b51e8ee7f1bef3. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB72597095.