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 0x125acc3bac30d79f6a9872ec4d7e78a46718b838729c131cbb461fc44b5903ea. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/daa297ce-cae9-42d0-83d4-3ba6553971ab.json and https://artists.proofprofile.net/proofs/artist/daa297ce-cae9-42d0-83d4-3ba6553971ab.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 0xe7e3be5ddb26dafaff1e2b4dbb1f1e3c86ceffcde8ec10973b446735a231f0a3. 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/BAA052008374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b3be7b4cd019556c66533514f7cbfa464d898e17bd26b3b9843bcfb678a415a. 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/DEKB72412318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x629f44cbc30db89e836f6c739595b9a838b55bf3fa2136b5a23e5931b10315c1. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:45:11Z), 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/DEKB72412319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135d9c8a073cf2b0f381cfceb5300ee596505d2d6f08a9cda116a26307075047. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/DEKB72412320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fee7c195fb3dcf9c789e118ef30f4bdde5d62d1d06ea1651bb9f0a167ff152. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:22:35Z), 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/DEKB72412281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07685a002002e707d308597cb28eb9ec72b3a64e4a97f81f70e7edd96c3641a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/DEKB72412283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa58840b1894f0b17d66e6cd92578c73127798867fe502fc6a60b29e0adb0f5. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/DEKB72412284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5d979e85d8099a9f462a321bf11fd0fac48a40a8e611c6c8de3d1f6b99c9c. 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/DEKB72412288.