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 0x22d23fd19c1acbcf8aea471a235baa53188cc58e4f256f8c2d0e6f1f5bed150e. 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/71d5ff04-381f-461e-bb58-f342132f33a7.json and https://artists.proofprofile.net/proofs/artist/71d5ff04-381f-461e-bb58-f342132f33a7.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 0x5d55d49330b823026156dd70e3f99399a4ae458ba0a02d79f29e990cbaff8262. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:30:26Z), 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/QZN882075287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47bf86c29aa52fe4312f988d70670569631939439574675697d1f0051405437. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZN882075288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe32878ca8b602c5bd76ec7a4fdbd9d71d28f6f7902f139e101394a6ee69ed6b8. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:39:02Z), 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/QZN882075290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f3e2b12026dc78d661730f5a4e4fd3afb3b1e3f7b2cdd0cf3ed3f2f54d431d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZN882075291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b270388507980ac444b9a8a59945f89530116afd7547bdfa8e9cbf91cd45b9f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/AEA2W2204205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ea5aae77458156bb693f60d99ae812e0c32ff7bb03344f2b8fb11324a7faf. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/QZWFV2449254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79b5db831ef74ad83a0f2cfb8a7c6e65d13d23d1d3704835bc545d0b610d94e. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:15Z), 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/QZXLZ2552824.
Facetime conversation 12 (Acoustic Version)