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 0x7788643bf5b3697775e647de4bee949e53bc38c73df664a70d40cf6966f3fbfb. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/50746e35-bc17-4817-893f-0e9f1adc1d6c.json and https://artists.proofprofile.net/proofs/artist/50746e35-bc17-4817-893f-0e9f1adc1d6c.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 0x21162d4acab0d70d861e0668e961eb9b3ef8a53559883cbfdb23fd2aa9ebab50. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/GBLFP2582028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967d32025d383723ffd86a4229933e78abc933439bae4fda15cc67ab58d89c66. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:21:35Z), 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/GBLFP2582029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05db11a6530ed8a8e1643f11ae7ec60c285053ed0faed11ffca39863bdcc56d0. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/GBLFP2582030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x107d191fab95966f0888041dda6c10e9a35c83ccb144c753f3e97a2ced5c3f53. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GBLFP2582031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba0bc4a27f2ca8edf46dcbf544fcc136d0b7e2a3e68e256b19149577b6dde8d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBLFP2582032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e701cb82c55d46837c019380f232a56033e3ec7ea15648af14d833b592ecdd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBLFP2582033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1deba3057c10cbedf60766f12505556e8947f17c9eabdfe23a5b853525de3cac. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:18:56Z), 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/GBLFP2582034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f602ee0f6afd5ff64c19c0b1586091822b3e7aa187c6fce343f2682ef75a44. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:16:50Z), 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/GBLFP2582035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd35e8f2cdb14cd25c04a60316f28ba3620a74463aea15f26ff30886631c46dc3. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBLFP2582036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe946ad8d0568e9142c9a7d291a47bbba3c3d1704e29db2c6af122d61e12011fc. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:06:11Z), 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/GBLFP2582037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eeb361bba837933c5e5242f5ac08498ed190f3998447100a168ef8f8a5ddc57. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:45:28Z), 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/GBLFP2582038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa7b7ff8d8f98503d2c445eced023207c965b37a208eaedc2553b1fd6e0c3985. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:33:45Z), 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/GBLFP2582039.