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 0xc50c5f873ef44442b3cb724f9c4055c4812e00749762d1a054789da35003014d. 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/f3e60afb-ad2f-499e-91f7-ddedca49e542.json and https://artists.proofprofile.net/proofs/artist/f3e60afb-ad2f-499e-91f7-ddedca49e542.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 0x20ef1be84115591b737aa89325543cf1949e4cd89abe122cd955522923c5998d. 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/QMFMG1578736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e1f65c386d300ea12cf9662a817fef36a7e8b5a72fd717ec34ed4d1c6686b6. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/US2BR9700412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc69961e24e7742eada753a81a8aa42d120ac395033d4cf0c8d40260cd5ac89. 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/US2BR9700945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed92e388b791bb9b73e03c4e5f0943658b5727d51990e855d65af7fd8467401e. 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/US2BR9700989.
Colección De Oro: La Crítica Y Sus Cantantes, Vol. 2
Colección De Oro: La Crítica Y Sus Cantantes, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb265577f07be8bc8ad995118c63f07c8b38b6f53d6e485e59d12a0735b8036. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US2BR9700849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3998c4d56c68e93e1ce1e77ecae1cfb23d43f06536cc0f5b4c2cd464614ce. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBSMU8092202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dc7474ac942eb04d85cb01b21f7914196e97d91252f2ffa2f61371ffa8778e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US2BR9700845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd50427199e52bd3afcfebf9925cfa93f7363d1f1038fd0d6ee87649ae488ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US2BR9700440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0f399c35e767dc307443a66e01a6ecfc6f02a2519be4febda908d90d79226c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US2BR9700844.