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 0xe3212d5fcbbe380318d5591f114bf21c3eb88c2bff397bb4593fa7af1ee85988. 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/78c1daf5-e6c2-46ff-b092-85d1a77c2193.json and https://artists.proofprofile.net/proofs/artist/78c1daf5-e6c2-46ff-b092-85d1a77c2193.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 0xbd7ecea1475cc0f223d30765efeddaaf41c8c6fc1ff62ae86de5b4039596099e. 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/KRNAR1802526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec2ac1e8176491638fb05a8b23f49ed2de9c4c50b1724dcf6421d8d5fc4bc8b. 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/KRMIM1806834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2e367f9b76e1385f5233ce12512e3eaceb727f7f320297c5eac99a091d5e5d. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/KRMIM1815674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627a8e594b8eb04606173196d1eaeeee3189f697f36b3bb0b392bf85d24f867b. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/KRMIM1917439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba54b47d70f8037cc310b537e5cd6b327cf75a95f8b72879e593438e0b38bc2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRMIM2004355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a24680020bbf26c499b4807b9606a2687065ed4740fba5a51707356ba8c4c2a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRMIM2018032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc0020e78f2f4a907fa394b2b1c0061f6f61dffbaac23aa43b41c8c0f96c1f2. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T11:00:12Z), 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/KRMIM2027189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ecf6b6924baa837a859faa7fd0e7f52b5b16f9aa2cca1f8fb992af65b21251. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/KRMIM2112734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9b0330040a3f69d9b5353cafd012f2826f93e009efc062e78827ed3441c9f5. 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/KRMIM2214056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6e9458095c1b25075bdf7f489de866668fa84899ae3ea101c57decde56be7f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/KRMIM2241021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2e923fa07e1e04a65091c1738390386bd43287830216453ca0c213039d6f4e. 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/KRMIM2246435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8986b40091a34bb91fccc201b5b0f4490d75f392d164bc32f79e11763018401. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/KRNAR2234612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab8b785fda3019423cfd330febeb63fdc3e39899c5c840f90f19ffcd1333b4e. 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/KSA002402523.