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 0x6be24c2479ffd1512a4f01c723a795020e423bad1457564c92a1b1223788d35d. 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/985d7c04-2636-4e12-9f77-0d86762b8936.json and https://artists.proofprofile.net/proofs/artist/985d7c04-2636-4e12-9f77-0d86762b8936.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 0x021a1b574760b24d99189a4d6f0e3201ba6d83f8e2d2db843a38df895875d640. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZES62041800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe97db3c5639c3e581481eb07f5084ae87771068d009f8c6ebc9c89396251d76. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES62041801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb67d5f1751bb7308ff5bcb026a2b894c2a95b45e5689b12d21ae66cf9566b66. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZES62041802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98f862381972927e9391c02618ab900e1c19dc2804b8348343a8d2ae401f346. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFZ52185757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a68de6b559b9d9d99e9506a37d6a486f98110424eb55c94f570a1043a0713b4. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZHN32219576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa0c0267132e9886658314be3c278050ef19f32c2817849bc277cfb042a75f7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM7282404906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44c9e0463522d2db66eee0773e8903dcf05442d0cce5f09203fcd2c107867b6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMBZ92407249.
Hell Was Nothing Less And Nothing More (feat. RXKNephew)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc83dede105e1df74f243da08c5ce8e8e86cfded4e66e21b8c2a349065d17e1b. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:29Z), 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/QMDA62419818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7434e1b8fb18d9a7abd8ef67da9086e35f9247fbc136635907ef20c15003661e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:04:43Z), 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/QMDA62419821.