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 0xc8863c4b48f0a4557d51b862cd0fec87f38861d8599a87c8119a214417d4df33. 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/b1d641b1-af02-4395-80a6-76200c54195e.json and https://artists.proofprofile.net/proofs/artist/b1d641b1-af02-4395-80a6-76200c54195e.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 0x6d46a8b848843432d9efab83f9161d1a59d5e8144893b18706d89e080f6ecf7f. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USY280791447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f8ebc8c4f0299ca643a6babc36a12eed0c5553c685a7ee7069a5b1c01016ca. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/USY280791449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8993045d906398f300243ad7c0f5d7e0847c36784cb223479f552f9fd15b8c6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USY280791452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dfa9ea7a359886833da32f39d45da2f22e61b5613522347c2a460c0ad8064ed. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:29:32Z), 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/USZ2E1010002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665783c57b8ea2ee39084e6f77ede314414ea7e0f2f186a9d3f4c69c587aa5f4. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USZ2E1010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64fe77662c030f0bf04b71fd6c3bee39d52498f6ef90e4956bab8d45b34207a. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USZ2E1010005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fefa752549eebc5fabe6476406f1dada253d448f1a9b08a10b1f8248e738b2. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:08:24Z), 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/USHM81544383.
Transmissions from the Electromagnetic Understream
One Day Even All Your Enemies Will Die: Chapter One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b687fe13aad97288aa8939307935f89a79b5b0002a6a6e50e23fe3f62e99dc. 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/USL4Q2583472.