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 0x39bbdffe737193f85c7ba517893f2beaf10408cb38c4974cf84be9bb932acb5b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/362c98be-bae6-46b1-a95f-af5c863007e3.json and https://artists.proofprofile.net/proofs/artist/362c98be-bae6-46b1-a95f-af5c863007e3.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 0xfd22630fd3ab3656abd6f14786ff7c168ffef9daf02a1500f272b7e27023dc79. 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/DGA072415280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a946e4c149e7f8139307821eee7bed080d6ef322705b5307af70fca1e19621. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DGA072415281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03edc009ac2492c2f573e61a04a5b22d8816e04e8aa6d92fef27146f586c6cdb. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/DGA072415287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8664508673be70a7c4f0633be3515c191087636b144d579d0ab12dd0b8b0ab79. 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/DGA072415289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8af3782e3dfb8f8651d6aad3717cd3a08ced64ed4d25190635737431192451a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DGA062496142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8bbe4de2f5ae50c6c79f4beff6af7cee839d8d88a7557b3beee35841d5f5dc. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA072415290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42df90c6de07c9fd059cf7b90438c6f752f000612863f749e687888eb20f57e. 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/DGA072415292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbca204d97cff18d86cafee136a453873e2d1ab514ef75c46e3da9d2e6d0326a2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DGA072415293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51f22d507c4201b950a0840e06e159887084e37f67873935cd121f357217d15. 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/DGA072415294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd38bda35d0e0805ea521cee6cbf747802c88a979deebbf0c829114a6b382ff8. 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/DGA062477634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd38bda35d0e0805ea521cee6cbf747802c88a979deebbf0c829114a6b382ff8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DGA062477634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801a1758d6e8eeda15a0bfde9c9b7d54f93851ea58375c3bd7fa1ab5bf0cb48e. 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/USHM82231818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9584d1a3442e4b5e9bcbe9f252ed98384d373d819c3b021127ec61e86d38f94. 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/USHM82231819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x117f622837176c35cb6e4fcae49da0727cce4f3ec603f2133fd3c37cd2d6f60c. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/USHM82231820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c4618a2b5686d1364ffa174f8ad2b8fc0d47e32c8ee6f1f8a4119a0aab602f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM7282534566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x921035160a0d3eae2daa58fb1a20cb7ceeca487833ab3d2e331bef65d2abb084. 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/DGA0S2435372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525fdf854ea079f6399857f54e61cd3426a0e6f9e3b2fcf5f5f11cecc0e93dde. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0S2435373.