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 0x4f3084c78c5499e6bf8b7002f5cc37b0cdd6beda23423b262b1ee6aca486f1e3. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c16981de-735a-4f53-8371-b513f92906e6.json and https://artists.proofprofile.net/proofs/artist/c16981de-735a-4f53-8371-b513f92906e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cannon Busters (Netflix Original Series Soundtrack)
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 0x86817bce937269d65189b477b151f99b211734e960a4e36a3f6a333cb3c4a69a. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USQX92005345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bbd45d5b6a5d0645e32041e79293f82b2530547db9e944c239d0fe4448e550. 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/QZES52125338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d02d74adc911570690d3ae4d032a788469b17ed24b81c39359777146122924. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6Q2193113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9f5342f6e3433bc604363121b83f3b92d49e80146d0ee801d0cdb30d39741e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZMEP2184217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76bfb297c6052fea1ff02a66b7be51262a68cbb363ce6ab28fd66e2a1cd986f4. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:39:36Z), 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/QZNWZ2239930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884378b9cddd98fe817c6711419858df58701d976f01a4b88c052007b529bff8. 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/QZTAX2225634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45ad1bd8f00fbd5f4bf731fb7d16c9994976cbd428f2481e33a57a9ea3a289f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN82355663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800dbe8c6418745c2b91d57f7e9bfd420cdb27cb8df435d5681d18aabcd14b45. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZES82492281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350de3081ffcd7b3dd603020397c80d6d0f345a94f787f2e0221642e80a7bff. 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/QZZ7V2408143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcffce8b868a1b6ca9d661a224c5c160a7d13841c4aa74076dad8d7bb830d717. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZTB42552748.