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 0x796a3031874befde3b5e0053fedd5cfa857b7eb18a8b222bee73824f83bfb3ef. 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/daa822d4-55f0-44d7-918c-5486bcf14655.json and https://artists.proofprofile.net/proofs/artist/daa822d4-55f0-44d7-918c-5486bcf14655.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 0x6db80fb0f404259b1f4aa8ba23d0e197a041b70cab9efdf6e233c1442bac08b8. 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/TCAGO2266893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff1a44f1baad617de42d5e549cdef2b3a83b99c9bef9351c51c95039ce7382b. 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/TCAGO2266914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bca32ed2eaceef8a835e2eaed729c4d50a76cf6d79ae518334f3c461a5a106. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:35:26Z), 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/QZTV32358082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf17412729cf0eba4f506a8fa3f012d999d71f0f451b6c8bad2834b8aa16fd5. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/RUA1D2530060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa11cbace15cf3b786a230078bc303dc19ef8e077ac9ca9cd71d8dd8f364c17. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:24:02Z), 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/RUA1D2548401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5721a0b65291084e478686792bb1b7f33898be3659e8e763acc5470a60e39042. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/RUA1D2559460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219ece80526b661f25bac09cccf4d52464fa1ab32bb0b5c10143486e11adaf1e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/TCAJP2516694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a31b90fd7e820cf5061d22ce0e3f415752641410107ed0e90a1863f1109a9d5. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:51Z), 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/TCAJX2549501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95da7942412a1a8abd96a8cbbb149c4ddd35a872ff66ac0a19a281ba045fc4a3. 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/TCAJX2580049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d56fb0206ca91e79d92a1b695b0e9ffe46f7d567259b9a08672a77bb85ca27. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/TCAJX2549539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20bd0fd3866220068cdc246be56cadf626aafef59e8560c1d28d421e5bd2928d. 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/QT65W2588959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7ff0b8375e50f414d2999d2c7aeb4dd330dc5a356a869f0152b21a7062c8f3. Chain 2 (Bitcoin): anchored in block 958602 (2026-07-18T19:28:16Z), 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/TCAKA2528321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea1d948560303140fe4c64741cc656982721fc135ebeef0c2c22ecd563ccbad. 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/QT65W2501674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5307835061ec7290813effe74e05d54005c03895f7ae1583ea684d051df6f4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:23:17Z), 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/QT65W2500423.