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 0x040d9013ca0ec5a2ac38e487e82e891ed880941bf48b08eaafd8a85d6dd8a7e3. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f20976c-67f9-4477-8536-a8c278a0d15b.json and https://artists.proofprofile.net/proofs/artist/8f20976c-67f9-4477-8536-a8c278a0d15b.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 0xddee3483fbfaa589a71d5e1f02c56cca0d16113d5f9d6362ffee66ca83f33c90. 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/NZAM01900437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc230ac63b1755a68018fd80e554965b22387dff0fd73caf2d78bb586904654a5. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/NZAM01900439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b01803ec4e2711810c66e854ad56c2ba389fda45958bbdda8a262bd6ad83266. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:50:24Z), 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/NZAM01900447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda32273227ad704d8491e81cc7f7a278050e126e952a3e1b17b158050cad2628. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:40:11Z), 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/QM4TX2513948.
LIVE IN Japan, Sake, Sushi & Losing Teeth!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295e678afebe89601c9c4204f26eff543b8231818a848423feafbca76308f8fd. 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/QM7282529890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8aa6939675a2bbea13b97a6f1b34fe345e3d17bc7981a1686bb4e55ab8d3bd5. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QM7282529884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7027f39ea7d870306ddd3d5ee9ae7eb81bb890339d953a0c063cfe872af5f97b. 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/QM7282529883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458cea12d7a068224b16ad07214a5952cc4ef96c6a44f816239455bd07b0ebf9. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QM7282529886.