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 0xd0a9f7af05bdefe30a29aa0d6eb31abb78f663b40b192b3122f4f76f3292d5a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dde027e-21dd-4eea-9939-8d3af7534f13.json and https://artists.proofprofile.net/proofs/artist/9dde027e-21dd-4eea-9939-8d3af7534f13.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 0x93568dd502b406184406fb7d101d13c65127eb6e97f293fe3d53ebf8019cf3cb. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZK6F2138087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff6920512c436811a85f11a16ccb00d5470ea854dbd13f2513d768dcaeffac0. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:48:08Z), 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/QZK6H2282892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2165d14abe391badb6fb09d28f017d79973398b6d91e153db0dd4253adea0e8f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZTBA2287635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb7210c493715459d85faf6b84ce3c508aaa2c96c70bbe587edd615c400f183. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:45:45Z), 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/ITQ002501517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7a36c3075351546d388ad177c222a2e5b6119f7d9d16c71b7d74a305d464f5. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:54:29Z), 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/ITQ002501337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a687076f23c83e4821467bdc6170693529fda555c878ed6ab00867065c50d6. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/ITQ002500826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9034e5c07e5c36ffef7522b9d585c7c84077dd929b8f85562c37056780b3c30a. 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/ITQ002500827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2f4acab31ff930281e4f36e09f5c9acff978a0bbc7e04e8cf3f86d32a25ed4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/ITQ002500828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cff0d802b9d61fde830f098893e7427995c5ffb93ff6b5e2146aa0c1ef9e73. 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/ITQ002500829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909682bb63bcd9e14dfb6a75d1999ce0b566b04dafdb680779a2775abd7ed1df. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:19:20Z), 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/ITQ002500830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26b3f9bae59b6b7d96b6eabce595c89d44dd99ebba3589b0dc6f7350d368051. 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/ITQ002500708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe875cc9342c2787db54b9b765fb43760bb57340126cd9cc153d84b1b8079577b. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:44:42Z), 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/ITQ002500831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040f460c1c1fdb3988b4dd188fec608134748ba164bc51e215dda93844f42283. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ITQ002500620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814c109049dad536fed9f0e7edd8b91ad0bb019cec7933ace1a4bd063bfc39a0. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ITQ002500832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a28247bd540a33899c83c43de10594194ce221178297535f67817848515d411. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/IT5592500485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a48e61eb9323708d5d2d39146ea65f0fc9db0407dee70a34f52a23d47a57ae. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITUM72400913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08feb2d3f255f14b244268f4953defa4768766d3920efb5d861e650f7e4b581. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IT1O72501286.