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 0x4a1d97b5c4524b731f974642ce62b8e2c1d758b801ca80fc651cb1553fd791f9. 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/4ba88e80-29f8-43c5-98fd-da864e44b52c.json and https://artists.proofprofile.net/proofs/artist/4ba88e80-29f8-43c5-98fd-da864e44b52c.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 0xa7d592da6c7ce015e3c5c7abbb33eee438419849d21ba6111b1dcd59f4b3e8df. 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/QZES62337419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba617c121ec1198000b83886c774135464dbdb2588a78949f97fedb0ddbb8dc. 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/QZNWQ2351916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0615d9050a0cd1fe74dd1512091076bd38ec5b4fe65795ad0859ebf3316684b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZFZ32468269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3df431a0a133a02fe0cf962e6644453f5add15588147333b4b144be0a2933ea. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:33:11Z), 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/QZK6K2454933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363f23955153efe629e4bf45e5681200845fb7d79d846f9e174832f577f88a3b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWFW2416878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae245fb8c0913ac4f988d09de64c2bf79fb7bdc57fe936d37640a722721e24e1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFYY2556002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcefac6a463b4ecd848815c6b507d77f21af9f81225542a671cf5a841970dc8fa. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZK6G2519955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587de2357fe4e49684203451ce4ed3ff1a65e74844e47b059211b2c1c22a0455. 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/QZQAY2509914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502bfe012c707efb9e8ccc584c5ad4f3e3f20d3c4418e9aebc8ef5fc082c3947. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZS7J2570905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4b4a0cf4e25eaa9b33245adc07533f771e466aadb61d2c399a1294908942ff. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAKB2141416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdded1d7e9f6eda6e43e8164010451d8b3b29e523ea5f1867ba8ef33a821b6abc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USZHR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56cff79e624ba5ebd7d36eb97f84d2bbfd8d6f8757c4bf05486133cb7232489. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6G2341603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56cff79e624ba5ebd7d36eb97f84d2bbfd8d6f8757c4bf05486133cb7232489. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZK6G2341603.
Blindsight Cypher UK Drill Remix - UK Drill Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae8287b22caeaf2547e208c66b0ded6d06fc9649c483e8030544b5510f89333. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZK6H2130472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6306e7382a5043aaf86a785e2f9dd578c5b342c7afbb8120937631afd81e3cb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM6N22273587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dcb3356d0b0320d6df7b41a66f82c111a7862644ae67049fa455b8a45cdc12. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/QZPLR2195444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57eba2803ae7f066c872a4af5252785c142e212861a59eb3ac379d7d949bcab5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB22498665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdded1d7e9f6eda6e43e8164010451d8b3b29e523ea5f1867ba8ef33a821b6abc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USZHR2400001.