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 0xfc4cedf5113be3e17c0f0ffa1a11d6fc8d2120a47d94f3093fe9dee547eda8fe. 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/2f5c2c7d-0d01-4269-911f-1cbb4bf692f7.json and https://artists.proofprofile.net/proofs/artist/2f5c2c7d-0d01-4269-911f-1cbb4bf692f7.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 0xc961b44a82a9f0ea3d14db25592748d9eecfcbccc09817f07bb61cb1fd7f068b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:21:19Z), 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/FR10S1631752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7351829f2134730fb881da5ac6d030e618b16e3b8dd8d22dd0b37b66dad60be5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRX201630398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7adde650766cdb0dd618ac432e488fa68f84989f7f22ff7034c218be7e184cb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:24:07Z), 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/FR2X41734858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d18860fceceb239191f13b35fc5b27f623f0407a00c863a506012f42192201a. 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/FR59R1752792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b3c1572279486694dd9142626e0cf82f8b2a55ea961dd6cc8d09892cbef2c9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FRX201707383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4374db757ad087ee44ae8c9b959dda55530537f294fd33ac0eaa08dad8379671. 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/CIUM72000370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7039b7b07c1abfccb4462e941c6233e7c6f7f38986bb010399860393eeed5f2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T21:52:44Z), 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/CIUM72100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4371675b9ebe4dcda8999e4a6d952eb643f93a3a1702de07a0062027cca721. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CIUM72100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x154ef5e3f39b2ad02f113712fbd97af1858789ec0503090b5244ed4468ed273f. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/CIUM72200181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c4067b9ec8ef027911ee09a5f059dcbbc54fc82941f56b6cb754fd1ed1565af. 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/CIUM72300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca39117529bd0f8b44e32b66c06f2b8eea423318fdbbf25ae273403f6048faf. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CIUM72300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167c572fc16ab99e61c22d7eb06f5f4c293b2e1cb8d6ada1bce22e89d9f8090b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/CIUM72300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63df2ac7659eb9dc04cf544f03a9be970dac1f61889fbbcefb2431d58e649aa0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/CIUM72200183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54415a49bff757e3af1dfae1edd4a486b3215b129ac1b2c7d0f87c6025f2fc9e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CIUM72300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x197a2014a558296044296defce067ba2085344e89f6bddfaddb8e3ff1625a678. 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/CIUM72300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ff65dc3f5a3409c5544dfe2d68580909812197e1a8bd9196292f465a6d83c8. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CIUM72300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3410d1acf64ffd4d85d44547635367f2333e86b47a1382820129fd1f645e240. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:46:34Z), 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/CIUM72300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde97af372fe87727cc9f646812c95453eda4816855fef457629ffa899aed59a0. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/CIUM72300059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a8babe3e35a2d7b76d23a9d2c2f91b8f562c517d2ec44a4b84ee7c24080f1e6. 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/CIUM72300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0fbfcc55b43ca4a4fd28b1553a6f15c6c06d7006b20f21df4cbf639dbc8ae5. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/CIUM72200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fffc092089dc79c82f8c0fc98dc5a44a1015a220d170dac6558517b4fb6e27. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/CIUM72300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5583039edd28b49e4a8f5e18fe54266c0fec09422fa026637bd7a9884744eff. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:19Z), 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/CIUM72300061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2f0bd03776bd22b61df16492dc3bc80c76cf1e8ad996e93e842da4f70d3922. 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/DGA0Q2413726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc36fdd7383616f6b9f190a4131fcd11ff43bb30947305ae3f52a50456fdaa97. 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/DGA0Q2444999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b2c6322fade5bc9d8f4ef8c52e3a6eb8da313d26b3b9fb277cb234c103e068. 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/TCAGA2207809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cf2a393d939b38f0e64ecc2c79bf1c5190887dc22b0de1a0ee9c6a7659faf7. 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/CIUM72100125.