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 0xfb8dd0ef4ae4cf3420c859701bcedcc1985e1601d70b9ec87b18fd491ca1de01. 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/a58740e2-dfbd-4bd4-adef-b65d2278d06a.json and https://artists.proofprofile.net/proofs/artist/a58740e2-dfbd-4bd4-adef-b65d2278d06a.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 0x7ad65e7ab83e246cefc835b7bb9ac44f81de01f60a608cac85653f38ce66cdf5. 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/GBKQU2216339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4285a0665bb35c7c47a9a789171f376e1a510fc5a4c8f7717e6be2d1aeffd04e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBKQU2216340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f848108f66b4a35cab1e3d780b427ae658d63d06ef072d4520a6887a03045c. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NLXV51300850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ea74cd0bcd3bfa432b1b06e833184c84b22ada970358123d8ce86c305afad3. 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/GBKQU2355306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2482231b8ba1ae4bca7e4ed6226c8a3722051d24a8b27fff0602fcb771f3cd28. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2345482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffab9ac32827b210beebdc806ad1de1677262aea7802cc80dae8a54d7190a891. 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/QZNW72203026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dab1db1263d1ba4f7947ccb27cd0c1cc048973976d06b7e164e604c160b0c05. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLV62202732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd226c19d18ba7ae2a0fb31ee840c6c166d9e5c7a5b32771b93994424e3193fc2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHN52239870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0926c7fef8da230ca87f6215dc5ea2592efb3c5166f530f9f1dbbe9f7fe05e3a. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/USLQ22180405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ed7fce9db40ceaea6599777ab2576905d6f16d33790bde78493fd453b7546. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKQU2239489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0844980eefa07eb2e177e4cf2f94039d499dc8c3a0ea5ab0c0f89f84c6f9e7f1. 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/GBKQU2209407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6995f76b413c911a67963a2c5c3da99d388b4ddbcb28a8e5196d574d9094a06. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USLD91735975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dd4d15b807514e332321ea8effaf320c1f9867f79ef3b969fa238400f09778. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2513776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8340211b019e9d76a28c25a8568e4d5185a7c9b9183afb5aa393a6598587cda5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USLQ22107449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264def43bf180302bd0e002c34eebc92d5b1931a07d8e11e2dbfcbf3a8720786. 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/GBKQU2503913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bcedaba45a37f34c6ef773b1b532839f278007738f903453615fec382f388e. 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/USLQ22107402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec5deabd598ab61915849dfb551157ae905acd0252ed6710fb34aa59be55535. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBKQU2490194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f00fdb58d4a150dd7aba917651c0d06cabb64b880a85d6faf3e13b38bc264c2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USA2P2438286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601958345711f1c40bed84d283966026352f53717fd31412695e24477dc577ee. 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/GBKQU2441508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e23eec5ead7af20912fd0ec565dbfcef59320f7cbcb3463831937fcc30a8ab0. 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/GBKQU2434253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4425d940b686303511162df4299a74d8a34e98ef7cb9e4da1f578d07a48ccb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZES82471780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5405f015e6267551684be72f5c3a5a33df22bd1aeb3d4de5b8cbc83268d4a742. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZDA52421424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb7714f4bff1de8e072d0750d0c6873f85e4f727b867d6f4de4c562667d37a8. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2403494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f20fd52b4c6867ac1577fc2390a511131019081f40f61b2d91a35a38b1e013b. 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/GBKQU2402338.