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 0x9c5c9c07ff9484df89de0c7b9e1eb6b0841e9117f25bafdd2a5e15fba813ab61. 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/0725bb24-eb83-4435-bf3f-15ef89b11ec6.json and https://artists.proofprofile.net/proofs/artist/0725bb24-eb83-4435-bf3f-15ef89b11ec6.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 0xe7bb1c9dbc7fcdfc6a7fbb92d3663739ed2a6fbc6e7326faf8bb3c4fe8df80ee. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZHN42060020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8132f8ff905a6b666e799f1dadfde6af3dca5a4731b7f8e957e985c82c8c7daa. 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/QZHN52048384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb131b68699fa7c9065dd63c3e1a9436161318fa6280bbf50694b5dd56219ea8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZFZ42190032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ca4a98764047bc429e9a18da81f50f65ae19daf7d5d06649d626dfd708ab19. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZNWS2057426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928beea8b9f14d9671c96c14e389e9d0c54ead9deeadd4188f8c3cca79dbbf8d. 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/QZK6N2119229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5d02a7a0254bada003b6b6633adeaacafbb2eb8338c0aada9a86947dafbc92. 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/QZMER2137186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6212f5981c99fd772134dd2c1df44f0cba60931fd32f5fb8d3ae6347cebc021f. 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/QZES92212651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc64fe4062fb33ee73ad746c1a78273a250582a410f211a836263bb6f12e678. 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/QZK6P2316917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888c65e8fdce120d7b6a2d9a39bf65b1f13f02e12c2126c040f650d5ad6dd3d4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/NL8RL2538625.
Clouds (feat. Langston Bristol & Curren$y)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33426a66c2e38c8492109ec1a86e3598d4dfecfa9cd9b1365f5bb7f6820f5be8. 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/USUM72208945.