1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x64beed9a3e83b5a1177a7100dab29ee03749ad31b506e1b980547ab9bfb0ad7f. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2741f263-935b-4815-9798-4997e95ceff4.json and https://artists.proofprofile.net/proofs/artist/2741f263-935b-4815-9798-4997e95ceff4.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 → block OTSBitcoinBlock must exist at that height 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 0x18cc07f6079991d05a5cf5147a0926779bbd7c0840e637a6d6dbd34e2cf1525b. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNJZ2311948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffd8a362d04d25413eb66d10dbb5c94ceb152e35695727773c0db7dd3755ef9. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/US7VG2435805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cc07f6079991d05a5cf5147a0926779bbd7c0840e637a6d6dbd34e2cf1525b. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/QZNJZ2311948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1530443b7dc0b84c8d21f9de8434ae502c2b7a076315293e4ec02b28412f93e7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBRKQ2524898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb8244859848db9280bcb52c2482b9ad3b0368aafbbc11c7c5c266def6f6aa4. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZWDD2571248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc109042155cbec7487cc1b82d25182fae434386dffa2713c266cb019c485bafd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWV32547107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb5a980bdbcfa44193c4cbbd22ddabe5bf533491373f2cd8b122dc03d43c12. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZWV32593299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87ecde8ed9d21c3c25cc8bd9317ac39f43bea325b1e99324d9a5cb19bbecffd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWV32593307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa047838301e3a6c6485a3fcdbaed7751bd410fa63bcf95ae0336395e178df109. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:00:04Z), 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/QZWV32594001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45a81ff28f87d75e19db314fe7b5060f2336c4efd21fa1ab33183179558db1c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZWV32594010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1530443b7dc0b84c8d21f9de8434ae502c2b7a076315293e4ec02b28412f93e7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/GBRKQ2524898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255b016ad73aa4282c4bf3e618eaca46122c5e3798b8bf1a48a981d1194cc418. 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/QZWV32594112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5102368ec0d7dd501af5c33669e26f8baf58c4f039d45773d30ad28ecb304292. 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/GBWUL2589736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb8244859848db9280bcb52c2482b9ad3b0368aafbbc11c7c5c266def6f6aa4. 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/QZWDD2571248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80f7f8c7107665f689bdc1fb6757129a281b739225f583a6d1625c04b811d01. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZNJX2404729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a40465725d4bb0808b24c30b46b48a60abbd97661f9dcc922ffac6230a9e15. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/FR96X2444187.