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 0x0f95bda1e0fe0e339153d7c779366465c9a1c7082c2a13f6c0f11536a0050be1. 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/b9c49bec-88db-4c85-88e9-5aba07046945.json and https://artists.proofprofile.net/proofs/artist/b9c49bec-88db-4c85-88e9-5aba07046945.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 0xdcb01a43d99faa5d34666b9d1bff42325559634aecf9a681a47113f0b6d0b2e0. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:08:43Z), 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/QMNYK1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8489217760c392692b6c91f213acb18c0b13d42de3355c4c66dd42d42f4cc8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QMNYK1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4af6c220098def40c0e61f32025778e7d18da413a084c0d5eb79fe9337a0720a. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QMNYK1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b2e0c8c75b3c237ef81ea748ddb7f11e596880d42a4c35757a1faed4e4cedf. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMNYK1200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec72910ca7b8e0275a8dc9c58a177f18a5772b39d29cb3e755ec19ce0460cf3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US27Q1462985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa849486954cec485bbec67e0e613bc15f085808028f41f63a2b5be7cafb3f1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US27Q1462986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f40e20cb334aaf2d352942ad223062708a8570586dc1f4a1d323b4848aed82. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:12:57Z), 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/US27Q1429812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1c7a79850ee5725c42797daa1836a13cb227a16f7fc23a92a6cb5b2cb9ca0f. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/US27Q1429813.
Outsiders (Music from the Television Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7f133372b7bc430b175bcf0bc746f6bb61b02c18dceacc4560442d735e8651. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/USJPL1700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0552c6a4b4702a68d79cf06a4435373505009053932795c2e8a7aaa08cb5420c. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/USJPL1700054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc221a11a9793d260c40a08591e665a602527a78919e2cf7e6789c25e60c83741. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USJPL1700057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1e5b0383ccbb37e22a83938a2a5fbf7732d3d6960ef74cfe1be96734f6d343e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US27Q1740605.