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 0x985a738b6e2a685d62bf95e9a5ed1d36259ab96ba2ffa877259bd025338492bc. 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/f6070f19-4c08-49f0-a48d-404e9aa19651.json and https://artists.proofprofile.net/proofs/artist/f6070f19-4c08-49f0-a48d-404e9aa19651.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 0x1170dbf8495644ddd867cb5634e237ec10a33673b597ff0ddbe38c9d02a16614. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/ITFR82200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87e61b79f8b3275b3c3cfcebe4ca424c945dcda05ca34116cd6d61d2fd29270. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITFR82200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac05d16f8feda87597a2ba1bd4d706cc7801754318722ea820a43dd5de893174. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITFR82200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070cd7a57e5dddc903475a43df50ae67f8995811f73107d92d8ed309f4a8938d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITFR82200028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cad2e4da43066ac3f419cd2c5e15fe091c0c7b92d11a9c09727046b3d81daf0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITFR82200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79936e16cc373d0faa7c8b70f3bce95f998d5ce3c23559ce3a02584536f2a1de. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ITFR82010054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf47b4bf0fabb739012c328d53833bfe2babbb725480ddef3380b1d363d1beec. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:24:09Z), 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/ITFR82010053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89f0873fcd4613a040941d922d28f703b2c982ddba0bb4e059ea38642270599. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITFR82010055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf26b0eb4dff633cf758d528eb399695d925b84e6bd06b1e8cb8ac466c05aa0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITFR82010056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3212847d43d15414c793f69d2e6e9252770b3d9239f4fe031711a0c20693870. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITFR82010040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe965b22f47f12574ddb89af665a42416b878f9c51c174e1d4b6422ec75c0dee. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITFR82010057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa68d9fd6d249a1b2c6a1f79739576efdc1bc6f47035960e2eca583d5dbb3bba. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ITB002301113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb622f4b3c50ff042f4ef682df6d91259630e3c2842f2fa839339d2259404ff1e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/IT8U12200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88798c42028e48cbf193ce516b5d220c0ea9c83ab7f4c19c37e8991b77f7d3cd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ITFR82110136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d9313ad7fbd20f52c6ee7ce83535b338248114ada7f40491697ad409d6f076. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITFR82110137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcbc56785ea6ed74a1dc524243f6b8f79e0d47b49995d3aa5ff58d589d0ac1a. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/IT8U12100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3212847d43d15414c793f69d2e6e9252770b3d9239f4fe031711a0c20693870. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ITFR82010040.