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 0x79cd3f1ae9255b33765c64081914fe8ca696196a472f06ab1465c6acc830818e. 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/b242a108-3b62-414d-8758-6743cc7e238b.json and https://artists.proofprofile.net/proofs/artist/b242a108-3b62-414d-8758-6743cc7e238b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Love Does Soul Like Water on Withered Soil
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 0xf96b4624e62a6b8307914c4adb1344b0f7ec4d9e1945e59e6ca9923c74bf1651. 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/GBSMU2452648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809a6e80bb40c9088902ecb375257cbb4baf4571f95d151355c233331187cbbc. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GBSMU2452653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacc688dadb3e06edf5029b8528d5768f154169026fa0b1e7f0b7dad424fdc60. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/QZES62562404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100f9920cb057832f7355127841030975e02e1b6fa9263c2945679fb9d0096f6. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHNC2564338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa437f3594c6f2999e256effaac69f6330f56ad381820b2bbe5761eff83c8e545. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:38:25Z), 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/QZHNA2599682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c4bc0b77a6d5cd97f501c29aff07880d19122d173325105b6c512b6f8f7161. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZMEM2521393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9896533ea7d2f4bed61267c022eaa05824d74fae1a5a5562f723a5222f7893e0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3F92592192.