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 0xf5a8b2e7ee2c595b539bcd6608147c3e04de719e81a11dc628ab7840f2a0481e. 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/24dce891-4cf5-4147-bd41-a1312364bd23.json and https://artists.proofprofile.net/proofs/artist/24dce891-4cf5-4147-bd41-a1312364bd23.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 0x1c6cda1c3f747969ac387edc7db7a3a7484b98ca1751624d40a870ac298e30fa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPB601877271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd6b9bdf39fa9683343b347738b28030f22721ba6c582252dfe5600dbb886a0. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T04:20:13Z), 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/CAHQJ1916691.
Music Box Collection, Vol. 1 (Music Box Version)
Music Box Collection, Vol. 2 (Music Box Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3612532f3eb5a888e953c3381e860646e2e1698247afd9e6bbb752f88f3e8420. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN92018946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb4516b5dde163da8222f4234aede2a3a20ccfbf665388e7010e0cbb0987d905. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:03:21Z), 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/QZHN92018947.
Music Box Collection, Vol. 5 (Music Box Version)
Rhodes Piano Collection, Vol. 2 (Rhodes Piano Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558517056c63aa7976e65dc46824c5768a9625799bef84c597891c2d518c8549. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX5MX2139903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42f5294495001a70e0d1d5cc0c69f384fd004a140465b77d7b4f0228114bef9. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-17T08:58:51Z), 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/GX38U2292568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d17179f3d118fe240969c7bc8cc404fd17c4b858988eb7d6ee5e40aad0646f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZTB92364480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752c148fe17083ed2ee6476276af613ba600ab0a45d6abc6eb7f12e102223f77. 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/QZTB42448196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7367aee0473569a00a5647abb5097003b7ea9a1daae30bc7b136288c45acc1ce. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:43:40Z), 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/QZTB22556698.