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 0xb9435c88ff8e014569a53eb40bbc9fbb8eb295361f628a50d626a8340da884e3. 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/a88d0bf1-dfbd-4dcb-9eae-2cb966b54a78.json and https://artists.proofprofile.net/proofs/artist/a88d0bf1-dfbd-4dcb-9eae-2cb966b54a78.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 0x6a2566ef9168a82c6ae00b763f943a7fc26d8f8e4b046c7b4e744cfc3736fc76. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPP2190170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897bcf9c738d7983089036e57e77a4650edfdfbf86162c3557865ada176d5615. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCJPP2190173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3683b80cd2b2a32c94a26cbd4011c2ffc8fddd823d3bb042502f88eba17dec56. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:39:32Z), 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/TCJPP2190180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e881982d1c0e726194284dc5c2f1f5f3d54723039b93355d192d1bfa5ea7374. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCJPP2190182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531d0148067e01a69e26fbda7284edbd575b04ba2313b61fa17b98224fe09e87. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:16:41Z), 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/TCJPP2190169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x897bcf9c738d7983089036e57e77a4650edfdfbf86162c3557865ada176d5615. 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/TCJPP2190173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e881982d1c0e726194284dc5c2f1f5f3d54723039b93355d192d1bfa5ea7374. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPP2190182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16abb846992e285b8075c2317134c104f610ddac50dcf0c27ac3dfb0d3c2f268. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:53:26Z), 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/TCJPP2190183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f5c9e9f269ac9f06ae0e842365922a8fcb2b1a5731d64b1e806960b5b3f926. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/TCJPP2190186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6afd0f264b0085e93eb6a521d88d43037453f23d1560cbbd0c35d5786315633f. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/JPCO02210160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe357b3cad173e8a057c7459d4f47e47f7ed099a062daf83e3b5e698128cd2794. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:49:48Z), 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/JPCO02210170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833c226dc9cb95b05bcd689124931ffdf3a00deaa1bf857934c7cfee059d8ffb. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/JPCO02210200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f140865da6cf5f0036ec5fb472bbac8f5f4d2c59816441b38a8f64269b11d2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPV502300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec284b49bfaa76d45c7c6825b0fb826c523bd73d17631ef6a1ded5c67e2d763. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPV502400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e2274b929453d33bf4c2380ceb37fce704a109424698487e240b45bde98371. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:02:09Z), 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/JPV502400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3370df7a240274c0908f3031222cb32c2945e33210d12c28dbd678c0fee6631. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPV502400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac82b856c4a52834c1784499d1adbb8346b880dac43aa3a11a8eb09ee9731b1. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/JPV502400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f4a19a187273f01166a4ac168e2a83cfe8f07812a97f810064555f5861c270. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPV502400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec284b49bfaa76d45c7c6825b0fb826c523bd73d17631ef6a1ded5c67e2d763. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/JPV502400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21483ecea0b6a17015653a2679ede341f9093dd8499298f07b4007ad99417866. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/JPV502400045.