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 0xd76001c3401d4b23a6f3d9ae85b80864c95c36b7b4eb605b2958d1f258b6b431. 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/220e9481-23ba-49ce-860d-a7f0a5a4895a.json and https://artists.proofprofile.net/proofs/artist/220e9481-23ba-49ce-860d-a7f0a5a4895a.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 0x8ba323481420c53190ad503f163bcac58312e1aae1daa4449bc11912a3b1ecf0. 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/UK6KW1700235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd22d4a311fb0f82795375f4987678eccc3104fcd56776fb958a7f218a04474. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/UKG7J1600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7b9ab56d14810a3d5fc141bda933ac1bc79bc2dfc723329be60033d16f59a4. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UK6KW1800131.
The World of the Married, Pt. 2 (Original Television Soundtrack)
The World of the Married, Pt.2 (Original Television Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bbda874ac63ffbe5850e3d8f817708a03e595b1892eae1655002bb16ac42bf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6N2234877.
CLEANING UP (Original Television Soundtrack, Pt. 5)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78ea396ded3e3c722210b5576e6b72a6108e07f1ee94fffcc7b2ac06e31f824. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/KRF702200329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22561c6c2543a339ac4afda58c51210f89965161856cf7324ccdcb18c201044. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:52Z), 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/QZFZ32317783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45eed46249e811e6255e91076b0863f400325d38ac069b9670de4c2a0cc733d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZDA82399653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b069525b3e86c74eb15c673c773841d89f48cdf170195abbf3246ebfaf3d5e0. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNWU2467622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13698d9fa3cada804239ebc766874440429fc9fae09d4c1acf674557ad51cfcb. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZTBF2452219.