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 0xdb3c62a0bf4b6b41204b63800cb75b7cc81dc1305f68f11177e9d79d0e718474. 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/0ce4fe9f-1fbf-42c3-bed7-e95a93f84c37.json and https://artists.proofprofile.net/proofs/artist/0ce4fe9f-1fbf-42c3-bed7-e95a93f84c37.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 0x3aae5418f215035e8fa491334c51b2d8449af32e551569fc8ce892513a06ee38. 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/MYUS12100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a58cc990520bd4b39a392f4fe0b5b0b9cd348fc9325f3f76fb2f6f3c480acfe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/MYUS12400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7bd9fc58accf8fd05adb54b15e5d9389b7aef572803d446f8c700245125a5e. 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/MYVM12300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10b5e4be01d7be4b4a5fa8cc031d25ea53f53f4aae041f378e458ae561e05dbd. 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/QZPJ32283969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411e20e096c2737c830e73b8b0d6b71fe4942d0c4d6d9067d9606d9527b464aa. 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/QZWBE2324920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce911738040e54222fef788e488a1776bc2936b81825f5b46a1869972fc53525. 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/MYUS12200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadee600ddff7b413775c8cd0c88fd5704954a7145b3e6214c2f1974520b1de7f. 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/MYVM22200084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe83b24521f3d726588c20a9b696ee87b88c6d5f9445dca0ffd40cb8ddbdefb08. 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/MYUS12200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fa5d1bc56ebc431abcfd1c8b92519ddd60cd25b078443f85c23ae654b18c26. 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/MYUS12100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945aa2f786e8c05c65aa39cb0fd067b05f458223079ccdc438d80ddb61053dd2. 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/MYUS12100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d39401f76ee2f7c27bf4882e5d7619233a74ce16d597aa5d8e323b378cb4480. 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/MYVM11900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5241361eb5fe5086fe91976139a57184bfb090131b0c6aef10d75a9f3b7630a8. 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/MYVM12300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0503eab61c7df8959ce727788a2ff9fe944fa1f14b73f101e285a9dffcd56983. 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/MYVM12300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced31a6a66314fa8052cc72605d3d19dbeaf722086f209fa435ff8093ace3f38. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/MYVM12300142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f6c114838ff5f19938256c882895d5a9a5b9f5bcd6300aca980782baca5754. 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/MYVM12300055.