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 0xeaec03eedf46fd4cb608a9ece3df0673734035c9bd30a139dc1ff0f4eaa833c9. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb8ce799-29bf-4668-80ce-dc2d4e460918.json and https://artists.proofprofile.net/proofs/artist/cb8ce799-29bf-4668-80ce-dc2d4e460918.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 0x36f20e91c93437098d984669a05a80c4d7a13b3a4b2c1a0119924f1654e9439d. 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/TCAIX2490494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd629f6c5483a1740d8b621d49be4bda61722c9e63718d0d61504c1921875d8f5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCAJJ2523352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60ca699b9be7cd820e2b4ddd990056bed8bb9e80d50522f7156e2ce98a5e1e3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:28:57Z), 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/FRX202584102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733a9b97cbe60912106305e1404a4e46bf86ee548b51ab17ce02a3fc7a5a70e5. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX282512301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267c71384e6e9bba0eb2bcee595d3c7ec366e9ad6164ec725b05e9988eff08b4. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T05:26:39Z), 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/FRX282512302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39319f6ca32368b2deb4322f1318a002179853af9b92a41d3161ccf60c045ee7. 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/FRX282512303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd629f6c5483a1740d8b621d49be4bda61722c9e63718d0d61504c1921875d8f5. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:00:18Z), 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/TCAJJ2523352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012c5ce616a8064cd0000a5a3e3a69d09f6d3da02dde185346af1152f243c514. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:06:41Z), 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/FRX282512309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa60ca699b9be7cd820e2b4ddd990056bed8bb9e80d50522f7156e2ce98a5e1e3. 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/FRX202584102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f20e91c93437098d984669a05a80c4d7a13b3a4b2c1a0119924f1654e9439d. 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/TCAIX2490494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d55084ea738556d0b1782a3b1452dae6251fbfbfda6622acd2e78aa2037b38. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAIG2468857.