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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60da6c743416ef8ee8f6f4415e935da2a27fcc1fe026886f34779b99c5f48abb. 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/939e3afd-e91b-4d47-8fd2-6f4ca727b24a.json and https://artists.proofprofile.net/proofs/artist/939e3afd-e91b-4d47-8fd2-6f4ca727b24a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sunshower [Cover] (Qrion Remix - Instrumental)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a8daae76ef59e2a74bc884e5a479374e182b48eb6cd84136d2601258ce8b78. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCJPR2204056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff0bba354343c6ffdf8417209de5ae91fa70913150f5795f4aacda5f0488282. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/FRU702200114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b26b2cc49845da3dcc6cb5fc91a3e6710d2ee4f2c8c55b7c0b7aa8e11f0ffd. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T11:06:50Z), 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/QZTB62302952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43761d478c4025081bd2770ccde81d7fa998b096d237c662fce6826636911836. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPR2237184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ab253b679177569e5dade603b4c3bf281fcaf46e45e30748885410823e0c39. 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/TCJPX2381631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a14a35bc99b84e3b0310cc22f4db07416a68084489f16e1bc84fdeeadcfe552. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:25:34Z), 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/TCJPC2443890.