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 0xca72b78ebc690e86ceaaebaaa5825ff4e4ab2c6914101b0abcc98091da824e00. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/83e9d2aa-2950-4296-acae-48a6fe2bc5c1.json and https://artists.proofprofile.net/proofs/artist/83e9d2aa-2950-4296-acae-48a6fe2bc5c1.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 0x521adc67a2e4531de344258c8514cdabff6fbffbdf038109517b708ad2dde721. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:49:50Z), 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/KRRAR2416911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9049e7d6442dd283d4c1f59b8713b5c716f3cfa26e44591719e6f13ba7f5f2. 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/KRRAR2416912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5362f8b3936da5e02043602459b4212a86828fc59fcba0b2c491a23416cb11. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:03:23Z), 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/KRRAR2416913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd88995c893c8b4985c46aa3f9b5e92cf692e102dae7fffae32520b935413317a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/KRRAR2416914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64771de4d532dba6af418031d79b23c74b69a4be810ee8560fd400c382ec5aee. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:57:33Z), 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/KRRAR2416915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356bd373e227bb81be8ca0521b388d1c5ef8f31e8bf3d8cf93e12ca52927b3cd. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:16Z), 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/KRRAR2416916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x510e48a4b2e2d17b044f5f38b3413062d38add985e21ceaa6a17af7435ee8b85. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:40:27Z), 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/KRRAR2416917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0949af24d7ca4131d6e65e41c0c1cf23e4a3db9025bd8dd6d987e890999a08. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/KRRAR2416918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30631d9c9e0286cac1b7bc220ea4db493c70784ad77dd61380f552ac5ee818f7. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:31:44Z), 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/KRRAR2416919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ffae7985ed6a9e2fce05365bb8c1fc3dc4a57533896fad13d1c1f99664154d2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/KRRAR2416920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffe4444eba5928cfca7f66834edbac9d9aa2813ed88e9489d81bb4e8ed46967. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/KRRAR2416921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb8957f74c1eebaf32381b5e7c39ff5231f1a606e484f1d6f4ce496907a2d77. 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/KRRAR2416922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6072c3c0e27d730df906edeefb1dc6c1ef4f62d56d2516fd8cd697c10f6c757. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T04:55:30Z), 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/KRRAR2416923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63723428e697553f2d1c58c6931b15a32361eec227abf4b964fff6bb6c78796. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/KRRAR2416924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b6c25220b70bf8516b8566a14caf6737d58a684ac0051b70c3ca89fe92c6032. 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/KRRAR2416925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8397184ff39048bb4437d7f394fe850c9857b338f86395275f4b1c5136b30363. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:12:20Z), 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/KRRAR2416926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c001b2138052bdd9f9b40287fb2c6b41eb512862e45eabe36a14be9a1a7a315. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:11:04Z), 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/KRRAR2416927.