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 0x4f1ec3c71881188a6e40f52941c260fde4a82907f7ac596dc572c196d67c94ee. 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/bbeb392c-3eef-4223-8b0a-d6abcf09ad53.json and https://artists.proofprofile.net/proofs/artist/bbeb392c-3eef-4223-8b0a-d6abcf09ad53.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 0x8543a5b81723a8666f61a20fcc6e1e5acbed9be90fe40dcf3dbcfeac2fd1eea5. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-22T02:26:57Z), 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/QZNJV2459049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099ba23012cf394033866b569f6bc542470b71461e4beada7993a1b46bf1571e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T16:52:59Z), 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/QZW9M2309397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce51791a8f84d03d56268c60ba8d4c7fcd5e44424ff41c23587189b72b80c22. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZ5AB2416175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5df131fd20c5e9b66df2dccef6dec0dffb4c10779cf50d11bca524ebfc57d09. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZ5AB2453865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f530aab49e6096dc6e5c487be20089fbac61cf9cc7a33d163c0beb3508854cc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/US7VG2493673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd585eb04bafdf5891eb32330cb7f16982a5da36febe77b9745416c6ae5523a8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZ5AB2492773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6738a6d9c8fc752a374fc6d5e6e2e0795cdc874a7307d683423604515a66d130. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:31Z), 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/QZ5AB2493532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e96db068403e710047c9979a63b9176142bf15d4141d1f63774a869841f67b. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:53:16Z), 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/QZGLM2407124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abb6e7767035275c2dec401dee6ba087e2a4c3b1e7e9f9981d213c6a65a4066. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QZ5AB2487278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bc24a051100f7d09fb71bf44f45cc1bd62224fe0717e4a7215e614f8de62cd. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:04:42Z), 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/QZ5AB2487440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938e3ccb20ebc459cb542591f344dd50d9c9295630f0ff3ee9951dbcdff09957. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:03:41Z), 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/QZ5AB2483346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec8119c354c78a10bb3db9fa974084861c23a9e32647189029264c7b9f3cbd4. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZ5AB2483363.