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 0x866de944d3ef27d6b4235216692ee14341b8c915f90e81644ba727cd915b9500. 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/edc6e21b-b868-4fd8-9cb2-7f8806b949cb.json and https://artists.proofprofile.net/proofs/artist/edc6e21b-b868-4fd8-9cb2-7f8806b949cb.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 0xe753b8396c31a1d27dc0120507070ee72298e1594a5b6a3f582227dee7d332cc. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZES92483141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f2beb8ea7cc2284a3f9b642f1e7b7ca7a90cf87c6a2b82ca28bece2ca74936. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZES92483142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9005b1adb6c1681de02b3c56f3a695a9c8948feebaaf5be66dc532c6500cc314. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:01Z), 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/QZES92483145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd49489e3b0a00eb7261edc231268eeb50b709dbcde448762bbacdab0fcdf2c1. 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/QZES92483149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c341e61fae0edca1c4e183d53c285aa1e1016cad3dab6ff2abbb5018a9685f. 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/QZTAU2447009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02356501948a5b429165bf852f86f121bc9de167641e8000e8e2532c8d6db82b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZTAU2447012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d634dcb59fbcea58577df0a67ecb3cb22ebebbf7d310e2d66fd93a665f594f5. 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/QZTAU2447013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8293e6e1971a108729f548acb76b794753f27b3ea73c7f011791235c175fe558. 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/QZHNC2538248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71fb030e27c0c4672083eb05c8a22e1f6bbfc7db48b3cf5a545156f596220e4. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHNC2538249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b2ba8fbcb092907d7bc4f42eec0d97aa802f24ee1758b7c3148c3eac288f95e. 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/QZMEQ2541603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3758697bda906b07afa365b4326b639e30dae0c4ec72604e2214b9546585a35d. 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/QZNWZ2553331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4594018c2b6c8cb4f922698cc89dc212501774cb2a6eb0d90dd74937043bb8. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZNWZ2553333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd859530f76aff2cfd7399c91eee8b6c45a264c10c50bc588d98c530d71b86d84. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZTAY2598590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a8e77afc64c60efe52ed2fd92b4ec49e35b1d57f26b2e4ac59deda75292bda. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:50Z), 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/QZTBB2519603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084b2ec4689fe2c157daf2ed699d08bf07fc50f8a2601c3f02a61a6ba445d656. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:49Z), 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/QZWFM2506072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980c1dbd8b0223dcf9f10c1118b6ca150d2d22908a527c551d8f8614e844950b. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZZ7M2552742.