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 0xc4d8f6b8c43681c17ba0678a74bc3b10b1107343bce70040cb0d3291e5559658. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1602eeb0-5a28-45e2-8eb4-bd80a1b6db58.json and https://artists.proofprofile.net/proofs/artist/1602eeb0-5a28-45e2-8eb4-bd80a1b6db58.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 0x73ef52e849c9f1fba790ab1e827daad060b2e1755a9d71b69a75c02b320c3e0a. 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/DKJW20800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4b55c55fa31635ac4c8eb0c881e41a699ec98f6d38afab9dc8c0c6b6df6fabb. 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/DKJW20800103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40afeec6e042c0b3e0a61ad4d96b4980bb1ee1d31a0ae4e7ca9a0e890c7dfe39. 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/DKJW20800105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cfb1c7b83c5451dac79f93a34190b6d0a55f431b503bbb16a456177a75d8bd. 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/DKJW20800107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafb8d4bee215ac774ab9264ca4ee884640b3ff2e7476f1ebfde2605ebb78469. 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/DKJW20800108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66307dbe2dd00f2e2510e0412c1bb068e4e493dfc2fc54efdd71761db13e95af. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DKJW20800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aa062a471a818a3c9c33e3121bdaec76e4c788885dcae9fc689beea3ca327f9. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DKJW20800113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1aeceb7cf2c9809f5f60999f74eefe6b1df12bd3330c6342579e67e59138b3. 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/DKJW20600302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae14db607f031f8da2c04f13b276438d405acf4f576020aaddbc2b8d86cbf3a3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM4TW1945562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1ebe0be206d5ef1021cd0f5459e0f3c635a147abdb3d70595f9070c7f4cb83. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DKJW21100101.