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 0xb5889e8bdf4ba9f082fe25d8a6abed71e524f84ea7cc9d1107396b5eca04a0e6. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/25455d50-27a0-4610-93c2-34917b3af547.json and https://artists.proofprofile.net/proofs/artist/25455d50-27a0-4610-93c2-34917b3af547.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 0x836915baecdea54afcaa88eab73987a8c4272ef1d788539b2f3679c40cf84fc2. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:31:09Z), 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/QZWFU2501747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb79800f315552d3fb9aa7344008e7d08b9a23eb2d4a3ab391df3393b949211. 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/QZWFU2501763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89af7bcc0ec073a06e01c93ac85f9f95f3ee771a30ee9fc5c95a72c2a4a9059. 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/QZZ782507928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7ae517ecaf9fe5cde21a3b94fbcf1890d4ddc1de5456c83d2e38a1c97d16d6. 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/QZZ782510884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa933fba4cdd9783a326a0882a6c9cad7b27a9b67408af3cbf856f165385fd6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7R2501558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf580bc30e9b4c4e5d1e290a959c333efc4ba7f4e6329ca6d0dc616bda012e717. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QT3EX2566870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c3523548e71d0d4ae95c4e9367415eb8ab66ea4253f68d229a9f1cc77403fc. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3EX2569909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224b17f6fdf574d835eda3d3fec22efabfb4b5c3749913be09d1f1f9b3e2a1c0. 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/QT3EZ2529303.