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 0x6929f8da88823f101f362123eb7b966ecbcc8dd34876c681713360dcfffdad15. Chain 2 (Bitcoin): anchored in block 953736 (2026-06-15T03:21:19Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99a934c6-6fe0-4e5d-aff2-8da4ed73481b.json and https://artists.proofprofile.net/proofs/artist/99a934c6-6fe0-4e5d-aff2-8da4ed73481b.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 0xedfc47cc07a417947e8dfb45244503f8284fc21209cdeb2eb55885af7285c4e0. 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/FRX202444500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8993a4149bd9c8031be66b04fa5ca6f1d79dee7d0f6e5b49b645af46d807d4ae. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/FRX872433513.
当羞涩不再禁锢 清流也是一种罪 - 伴奏
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fd0d3e1a0ab9b49cf6742536fab11dcbb340d04b29dcc88d90f9c61fcf6c1f. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:18:49Z), 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/DGA0M2472458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa96b6aeaa1aabf25c1a14cee8eaef5043a494b232e3a85fabaea6c807bd6cb13. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:56:25Z), 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/DGA0R2470747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2850b3230846d49d36d500c60767380188475b67988eb94c4d88f2cc558f92. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DGA0R2470330.