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 0x2e76287caa8ca8be0551e5e4fcd365cf1b022d0e086c0e9bac7ff8bde9a6f1f5. 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/f37aa45b-5c45-4488-a718-7e8db5fe6d51.json and https://artists.proofprofile.net/proofs/artist/f37aa45b-5c45-4488-a718-7e8db5fe6d51.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 0x3710ef5c0c88cb9eae9fc856cbc8ca49b6202680b03f8aae900bd56b8fae1075. 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/FRS182066078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb49a4475705bdc4a518f9052b683ee5116d8d543ee7a07bb77674aa6d165f581. 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/FRS182066081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfad896e7cc371c171b432d827711c293dbe0970b11beeb9be5d936b15ba1d53. 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/FRS182066085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb66957b6d28bde6acb521efc5b4a47afa3faef3f5c507b32013e896821c26f0. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/FRS182066086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ecc211e0b4d9e1e945e4feedec25bfb75930f6eded7af73f758e032f739286. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/TCAIK2455954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc10bf9528d866ebd52e95a4d3e1b8653e78c311c79973b31d065417343fadb. 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/FRX202282693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e9c03fba3d2129a4f51394b36dfcda74332f412389c6c5e3ce28ed5e7eb14a. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/FRX452206453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb79e54fb9a81e96a42d03427c800e27a3da9e7b8d577ef4085b9d6b1b4d2a89f. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/FRX452206459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb847358fe12be3e6c8b5a3fc8fce5f5c3398d27c019b29ce5fb64109cea17a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FRX452210847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5491948629b8545abe452b7ea4cf6c698084dc15feec9d5b03a4384fd043b5d5. 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/FRX452210848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae346d482a8f746ce625d72b40437f0b758a315e117ad500f2f7ca996ff327bd. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:36Z), 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/FRX452210852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe436f590239514cb8f8c08d6c99e68bda236ee9f0503ef5fc93bab3db4953a51. 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/TCAII2433086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec80a1726b8f8ffbb5f613c4c3852cb716af026676fb5ed4f377481509875c8. 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/TCAJF2573136.