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 0xaf7b08984a63571477e9e3faccc96886905cc5cae41ee94ec9ce36397dadcdcd. 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/2a6cb40c-099a-4910-9225-24efd1be42e4.json and https://artists.proofprofile.net/proofs/artist/2a6cb40c-099a-4910-9225-24efd1be42e4.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 0x0589460e84b4d83676fa59e2523a5423471c0a5cdb69f9b9f0d94059048bed75. 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/GX8LE2280930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb528e4f3ab07aa5a6a0e6905f305bf434354763e6cb3df0193de7b6f69677171. 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/GX8LE2274314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b162990a05f10ce93aeaab8e358f5fc1855279f3206d175a4c0a7514942fe0. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/GX8LE2200725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39618ce65062be9d1c3980e3edc6eda11310f0fe197e219b02be696e0791ecdc. 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/GX8LE2258587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef139dbf1b1f47b2f880a242e6973349f5ff4794e0bf34b5d88a9685da9e1684. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/GX8KD2395208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a7ddead2a91ac42964892b43524c13fbd3363a688344cfc3b9e77664b89cd02. 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/GX8KD2300938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99044ac2570c75041f1a78e5b6232b5b02aab616d9cfa393c86af7a8d6065744. 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/GX8KD2325469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee60910f61f0411e62884d4214effc853ce1b8b9a701621bde7b86833787ab0d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX8KD2387280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ebaef98a17a1920bc93cb5f2b6afced7eef2705c7c366b2d742f1a6245b4e03. 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/GX8KD2399884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0ded1ae6fb2b00ec32b0512dcd0b17a23477a1b4915251d2b94878f3d5ee4e. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GX8KD2324583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40936bed56d03286834e8f2a5a7f1c7eaca6687cc25d48ad882b6052301aba3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8KD2364185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70d9d5b8fd6755d1ad3dadefbc50d8d5608cbff3b1dd4698e0a0f4488e528dd1. 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/GX8KD2308357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833394fb4490da627d86f302bc8f132262add39515aff77fffc628fccf18917b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GX8KD2377299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbab46d2f930d931ec10356ffd76dcf4c15f322839d5744a8d1bf54a1fc395d7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GX8KD2339428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa140617e1fd640c56997961d2dfb6bd8f242751d8d511e2b613c5ede3c19ec16. 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/GX8KD2361060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd6c62fc9e415581f609ae01a18342cb1cf08777c46ee365e51b705dd52958c. 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/GX8KD2343626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0347f61641fca8475da5cb39e30a435e54c0f619fc93b734d6cd7aeedb1c9f7. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:03:25Z), 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/GX8LD2421278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9722b1a00461a133ff67e91782df1889c427aca43ddb44ba6bd6cdb2cfda60d9. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/GX38U2435687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x726c1a32e41a3609a0d5bc11b1f3f5c132da711e57f594b2167c99c81a9a2886. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GX89G2597725.