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 0xaab507f974b4d86e795327e7204f860cf3dbb90f958ed13a678e72ea05558e90. 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/5286532e-515a-49d4-90eb-6fc13a1fb766.json and https://artists.proofprofile.net/proofs/artist/5286532e-515a-49d4-90eb-6fc13a1fb766.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 0xc00fc3619408ff9ee044ed8750779d15ff3a84ca81f462193bd182baaaad601c. 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/TCJPP2127541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b1e50405ccc598792e3abd4fe39c1fd5e75f8dc880da6b6cb60d540abb0966. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCJPP2127547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7183795dccf85482c609ea7f53c5b3ac5c681c157ab5ec04a4ac3ca68a36dcf. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCJPP2127550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba2fdde289b2eb50218852cf58cfa51975e02b50bd369bcd092b17b2f876c26. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCJPP2127554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe599c38abc41306d5cf7def1224fccfacb6074f9e6b9352015434cf2de0f0685. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCJPP2127556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b953a3313619d24ab6a20c86ab1189219b245939c758f42472f082180f562. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:06:53Z), 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/TCJPT2295777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1025507ad0a915fa58edf27a11c747a7a2a9a32b0688e2978093151381a21075. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPX2379370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e2b519e01e269f4aa1c46e413c4eab9b4c8d9d0743970498d697e6ebab4309. 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/TCJPX2379374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b66500c0e393e1a3202472da097cf2d5601cbf1bca4565445ed15054e4978ba. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPY2350110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fd2fdb0ec786a04ec313fdece44e976f7c4167d11492db2a11fd64972648a0. 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/TCJPA2493362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7a675360e490d3c4b03c0164d8d9b3ae6b6dc205a4cb0ee97fb32e815fcc04. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/DGA0S2446560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5854006de57d350875ab936d4bff988e59d000fee8240dca9e918911018c7cce. 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/DGA0T2430922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478a7fa83c4ef3fd0740dc2cad2561ac7b19557fd09be29c61df2141fba686be. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX452575210.