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 0xa5a4b48b06e4cadf190c412c8e0e31c9eeaa658a257a1991c782ad3f8255a33e. 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/0ed3a8a3-cec9-46f3-b75e-5ffd1e7bb37a.json and https://artists.proofprofile.net/proofs/artist/0ed3a8a3-cec9-46f3-b75e-5ffd1e7bb37a.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 0xa4ed18a963b002724c88b87addbd2904b1e41c2c8a11165a7935ed991d6540ca. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:07:47Z), 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/DGA092213750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977ad087493eec18931ec0fd121c8ff905ac2030d4be1f07e24f6a58a565b89c. 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/FR96X2363787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d8662688a87324409e6dfb55f687c6149e24bd8506e9447c4c367e02689494. 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/QZDQH2367373.
Familia Nacional (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed410a33f167c446dbfac8e8b7298312f3e0391d3ac688c5670dd4dcb3b4e0c5. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:56:17Z), 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/QZDQH2428349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc804f73d772e8dd4126b1bbedff4734f474efee55e74814bd2ae9dccd7e801f0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QZDQH2436941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6586a287db16bd6cb20f77e6a778269dea5cc123bb1556194f27264dc1a9130. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:02:08Z), 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/QZDQH2436943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ada94cc213bccf6ecd7cbe0b24149feec9bce4a5b6a7992d92b7d40aa6dd16. 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/QZDQH2436944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d83969fc5eb4956bf0c550b26a3f7b69188124da41e8497cb021fbd93fc167. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDQH2436945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c914f6e147273f4be1d1e63f3a035d792ac259de7b4d8c1dc27185b939b612d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZDQH2512523.