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 0x3ba586a107acc54718bfce4c02e06146c7966fcd8b0509aa02b2b85d7be1ce73. 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/ce783b71-949d-4064-9c72-3db4bea27e69.json and https://artists.proofprofile.net/proofs/artist/ce783b71-949d-4064-9c72-3db4bea27e69.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 0x33aaeda96809c13957b70cb051fb551fd734de7212d339c823df5900aa9e47b2. 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/JPA651804371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a3fd53ad64a7d1364146136927df9e8c8e5401632011b34bf722e1093d730d. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/JPA651804369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158680e6703306856d14d25f6974aecb35963c09d5ceff2acd1bbeaca8928154. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:23:17Z), 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/JPA651804370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02db060a86fdeb92ce173f6be6e69c04996f11cf71a26e4f20ef74a38eb3ef68. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPA651804273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafaf17a08236ceb78ccfae3ab4f0884505118c054b9af17879debb22ce78866. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPA651804365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7effdb5c88451a315513f526225c29fb3bbaf51fcf1fa6345b0ae533a50d2a0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPA651804041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d1fde6e76a4a2d9c94dd0656f68a129020c848739af64a3c56f47ef4fb1a72. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:43:34Z), 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/JPA651904622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e82c482a3f4f3c7e466e872f7abf2ecedba54d4855c28acbcfa4f6dd2f3568b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:45:41Z), 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/JPA651904735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba8b4c80ab7db66ef8954de0554d7f59e034d3c7892f9cacb397548ad3cf5e0. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPA652105355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d06eac746e7c8f2fa339ee835b7c61a0000ce6706af4c3547cdcd7b65fc422f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPY392301600.