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 0x3246d66a0fca23d6af5921e2552349f6cd7d438da4f58fbc893737d920552f16. 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/5f5997ae-2411-4dbf-b036-1cd966687746.json and https://artists.proofprofile.net/proofs/artist/5f5997ae-2411-4dbf-b036-1cd966687746.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 0xdbaf25df5d9ceca86a55bc529fc7cef08c1219999187d5d6739db6509da82e70. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:46:27Z), 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/DEYX82165447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5268f1a1937458f51f34f99d62fa2ad8658fa2c58d9cc1741047fc859e0c6cc4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DEYX82193933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc599fca3010abd12d5759438b21f023d7b3bb9f816c74a44a5054e030eb1fa4. 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/DEYX82209440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee05bfd1cc6496ec496d58edcde04cf46909328d799d4ca50da92b0415355c8. 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/DEYX82209441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aaa03f73b7999849017a03c3e0542faa62e633ee41fccb3cfb3c375d8b9b87. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/DEYX82226249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc883983fd76b1164b7610be54d78641e255b6c771cf94a3173e74a05b4499ef8. 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/DEYX82239569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaec4a514f373ef6105d4cfa895764586fb7d862169e1078a8e2ba5720f1acf76. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/DEYX82239570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed41805be6c513aee4eeca0398fc80beb2ccc65da89cdec4d6c2c8f0072c5270. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEYX82247496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb620d72d0b4f98836365b418e36b7a025594163165190f81c7c38940369dd0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEYX82253749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77191b0ea521fae2c4b8f97fec78ec72996d29d7dde9fd81c8a19c7bce871f4b. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/DEYX82260589.