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 0xc248559f3e7ed58d794fbe0f1f7203776e97ec22dee96162d0d9b2f7c5fe7dac. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9c9523ff-7c17-4b64-8fae-7aae7cf57bef.json and https://artists.proofprofile.net/proofs/artist/9c9523ff-7c17-4b64-8fae-7aae7cf57bef.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 0x5c5826b4ee3e896120d52dc3cf3e215794ad736eee0e9d511172db5b23ef41c9. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/TCAEB1901463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd67cabaeca360fc16048face28b37bb6c2ce5afd7f867b7b72f2e7b9d924074. 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/QZK6N2265467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b591b679cba70fda735cc9761f1c8f6af8ac263a30e4f26ea87e1b713e278c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6N2265468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2b131c42b236566be3afe549aae69e2fe01841cc3d82e3a905d32da66ded38. 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/QZK6N2265469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d9fabeb30d05dbf2b1316da9a5707169ba58a315fde5ac6dc165ad77641e68. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZK6N2265477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1c13e438b452020318462e456407c405a80bdb0677f4a5fee97fce9e469156. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6N2265478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3622b0a99fa9354344cb7f5c6d5f2664e1915bf130d3902ef874bba44daa03b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZPLS2330179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb70c3f36ec033e51ee5b6e6f268372c556bc00bf2f7504870462fd265f0a72. 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/QZWFK2350742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38ad197ee7b89267163114c3f6a74dd1e71e4bfa3875812fbc216ad94c1e1292. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:11Z), 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/QZFZ62445636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc57327c0c839565d2bc75b65462728d97f9ae564827b5219b9bc21f961f1cc. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZFZ62445641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731905b1ced25cae7fe626012e70d332abe6d56731eb21d749cfc4167eeb774d. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZZ7S2495381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d1e32e5687322a1e6b5169e207d628d7157909f95a7f067490a6afa4804568. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZZ7S2495382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13bb8d5a38275122b0e43f40dcf79f1e7cdf4bcda78a2f8a4819c2dc90556bb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:24:48Z), 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/QZZ7S2495383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33853d8e080f87df98bfb72cf8f2a4f368a38f9bbccb1c777f7ce04abc15d67. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:47:42Z), 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/QZZ7S2495384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872dc69f3e6a8e418800969257475a8a01fe0549a971b21046c3ce2b288b52f3. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZDA62594669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69162e2b16859e8a73d3e4222a7b77e451f754c3813e3c35959a85370ce9b31c. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZZ7S2495386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd955d6c6c433c93c1586f312931a91be3dfcab65deac9f102a5ab532b8f1cf9a. 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/QZHNA2419860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928d294060ecd090b3d7a2e42930e31ffe4aed65ca8a2c3e4e3483e65befe193. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:03:44Z), 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/QZTB42549495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9118cb42958ed8aea94aa39fa09d7e6987fa210235cdfc4cb8025985447067b8. 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/QZTB42549497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c725272ba58dc4601878c20b4e66b188ada2be8e685321f4bbd8bfafc4fb317. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZTB42549499.