1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9ca0f483e1416b9270570ff817533189e348ee3d18f475ab1bf47798a59b00e8. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2e501a55-28b1-481f-9111-36ad0b965a10.json and https://artists.proofprofile.net/proofs/artist/2e501a55-28b1-481f-9111-36ad0b965a10.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 → block OTSBitcoinBlock must exist at that height 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 0x4c5108ee1ec6bcb0e13a32efd67b60b1bdaa2963cce848b430bacf165eeaa564. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72233708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea00e08363d6e4670698f05526e17495210e9ceee15fa1214f5980bf7983695. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTB72233709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c1b56e55f62060edec7b767a425598cd3403a66c00cc934302703714eece8f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72233710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cfa1a9e12cf387ca2316995e6b6f468461b0ba4294d3c6c4d3e63097aabc36. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZTB72233715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a386ed853316e62cd58cdf9abc94b129924b9c92d62d363e447e725a6827c7. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZTB72233718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a803039dd7753df2f2fa28020385909c683b8b122f9c301ac7b1fc8ad96f97. 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/QZTB72233721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096f775d48d3fec6334504d3b932ac3f53e69cc42d64e5d8586f6515c9f616d5. 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/QZTB72233726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcede5a806ec545a7ca8646174e6ddc965aeabfdd9a437f6eb5461f4fa784f8c2. 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/US38Y2542921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4120bcd62c7947f9439c911fb9279f243411681d3766baef24bfa1a455c16ef3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US38Y2542922.
Les Couleurs (feat. Ball, Advm, luXe Timeless, Sholo Senseï, Ry's, Esmo, Toothpick & Surprise)