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 0x4bcf8f82ceb8dbfd797b2445f083f08044096937e6e30678d9d2e974e1a658c1. 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/fff23054-309d-4cd5-b8c9-3441a1280a2a.json and https://artists.proofprofile.net/proofs/artist/fff23054-309d-4cd5-b8c9-3441a1280a2a.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 0xa7528faab8f20c49bca9dea9034f08b5136303116026864956a817b15dfae566. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/RUA1D1714048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f9996f86fe710a0948bbfd7524a0bf159aacbbd10896f4b757e6111096e85a. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:25Z), 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/RUA1D1813000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9b84a7ebe6878848ca8ba444671ef64ea85756649b6b7947ecb3bf8b527762. 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/RUA582102634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568b2359763262ed0f02709f2f3797f68c90c1e59467fcd3f734b77063bbb90e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/RUA582200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac1b47c0ef30bc764e7542ac3a9ae3775a916acba9d9268fd56c56f5ca8750. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/RUA582101528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea45137540b3dd5ca7a9aae9b28233eb444a15833dd50921916e5c711fe75bca. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QM6P42343942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x668b93efee5e625c313742dd2772d6bd88254d3ea79b563eaf34f5e7474f447f. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T19:20:13Z), 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/RUA1D2372845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad637941e2167040904268ead5e71220394d52a8024fe790e1ab4f2a9248dbe0. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:57:14Z), 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/RUAGV2410648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3136448ddea2cff74e6cfe5a6d57f988402d56933438ce56a1ff0cd98a320b90. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US7VG2541525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d6aac09de25dd7c9ea472cfa23c0ae3b7bd70d81f84ebf12cb60a2d7d71f9f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZGLM2569256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dd363ce42038d4afea4276a13eaf324e7e6a82883da70a923710b1847823d0. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZGLS2535069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c4dd3f304d4c996622a3d2a0fb1392e25d7d16a2ac3eaa95ee36f72a62366. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNJV2564506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fcf19c08500c3388c32f9444b0d31c2062054c4a543c77b30d9bc4c9066943a. 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/RUA6Y2548082.