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 0xa6aa34b9b1859daf802d8b5b982ab9a8694b797634095010bc655d8b011d5a06. 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/b98ba6f0-8c9b-45a7-a508-5597087d248c.json and https://artists.proofprofile.net/proofs/artist/b98ba6f0-8c9b-45a7-a508-5597087d248c.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 0x6a94739616d3af0980c628c1f9daf92d13c7377eba6be4ca44f123bd4758033f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQY51702210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a40e5f7134f3ce13ae56aceab1b0416d41f4875c5395d051c48c3049211a9b. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZXHT2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6024ae23d79f57805d71dd9fb41063be368fdf605105dacecaa43b71c334f3a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZXHT2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c1db606e51620b72ccb5c57eed92abc825cb3dc224a1371ca2f89e46928d4b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZXHT2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa725494598c5b5fbabb5dc75e96fbd57f73adb3b8e129f4c63fc5878a9b1689c. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QZXHT2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b2dcd976113877d32a6a806b2744bfe71f0b7c53ebdd85ae9ebe6b1b3723441. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA6G1557405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0537c1d0a05ea3060693b74da49cad3a030ba38c66a3b72cc2caaa59b336f3. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USA6G1557406.
The Walking Dead: AMC Original Soundtrack, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719bad59f50418f4f023dc15e691b58f76fcd0eb6f4d86edd81aacd4c8b2314b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMAS71400001.
Revival Road (feat. Ben Nichols, Tim Barry, Frank Turner, Jon Gaunt, Digger Barnes, Todd Beene & Mattscara)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x257dd5bcbefeac9163af52d38e465c7862e75aba32cc73c22e92867f95840796. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USTCC1095649.