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 0x3dfb75290587298532dc9786b2ee5031ace0a658188562dcae92baca759ff283. 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/67c0c680-c512-4fce-9216-1b6a239aec8b.json and https://artists.proofprofile.net/proofs/artist/67c0c680-c512-4fce-9216-1b6a239aec8b.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 0xc60c08489a0042717cb4689de02bead431a4a3e4ee6e65fb7b4f900809b6799a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:35:56Z), 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/SE6HN1960736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652bc1459559f88595a38f54e30b49fc595adcaf88106c3cf1d9c4a4fce0c3a2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SE6I31930319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8799fadc97335ef44c8bdf514409b0a0f38dc06e1cceba181086cde3aefe6ad. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZNWS2123435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621edff07952299dc68049bc79e2360908e6e56c8d3f6319329e089da525466b. 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/QZNWW2187988.
Just Because It Didn't Happen, Doesn't Mean It Isn't True
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058e34d51a96cd9b7f295e53e25f6c0d456dade7acfd84369d0045a43d94fc8. 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/QZHN52419000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f27d901c2689e023214f9c600d74c739150221c21b67704aa46f5ed9de9513. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNWS2264571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8799fadc97335ef44c8bdf514409b0a0f38dc06e1cceba181086cde3aefe6ad. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWS2123435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa045d5a6e7668e244b861e20776bacbb01ad6eba2452fd66f14865996a56fb80. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:56:27Z), 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/QZTB62216900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c2d966d3020376521762b30830b847d6fb7b251a438b6dd29a274d7b8a5b89. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZHNA2427233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0058e34d51a96cd9b7f295e53e25f6c0d456dade7acfd84369d0045a43d94fc8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHN52419000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138c5a6490889ae46b3dc78d50a2e67ea46181cb186419c37f6644d331fcad7f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:00:54Z), 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/QZZ772557159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd0dcb978441d481870e35ce33649ff3afc5ae360594505b5a475c900c5379. 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/QZNWY2480081.