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 0x5dda3ef809ebdffc6acc8d508aa590ea0b4e645164578434b44b529b142d130b. 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/e03924d0-e451-4b13-9310-89bcb9ed9ee9.json and https://artists.proofprofile.net/proofs/artist/e03924d0-e451-4b13-9310-89bcb9ed9ee9.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 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 0xa0b1eeac94aff2ec7f5dab8672e88be8a71d7b46f567cb56f3c8fbf78f270619. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR59R1903275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4029feb7bec0db7a3932115c195778f5b6dc0f76bb9f4d335057970b5f95bc. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/FR59R1903279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812725e6c3d29c13287fb5b2ef691bcc1711c946d025bdac36cc0258a7fa9e3d. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/FR59R1903282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9834478b53e9747c243b4b124507b39686028f159c7b5346bc9a86a4303474f. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR59R1902906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4845c3f929e0890d05528a5c77afe4eaf0e583b3a9fa3a9cf1f4d4c3fad4be6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/FRX282189752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421c69a3bddc44b3658c78bb6128f7cfbe6006c334008ada781f7da88eb226c0. 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/FRX762241396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea335a5a64e0b556dfda46e1d637bd0cbfd46380469c6f7fd1b2ca012f6dcf18. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/TCAHA2382675.
Хэппи энд (orexonthebeat remix) [sped up + reverb]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52498345f3269f8304c53dca1aa08f90aa8f521fe65d6a999692d8741a711fb6. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAHE2379110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1f23bdb7b646b742b99a4c057f952099b93219c254e3cdf87e9a3dff34e146. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/DGA092373199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4845c3fc8c0bee6d967b39b43706a29f307b985807bc2074f79f409ad2652f5e. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAHQ2373947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7111e2bd134a3303bdebf9c00ae3d543bd1f0ab395535b6704c402a8fc2c500. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/DGA0R2404851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fe34a12dc925281f2cf7797ffa4e059b00605c1f3f6291058059f5d8ce555a. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/TCAIY2462475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb919d6c4835c20e797c744fe8ee9df144aa909878dcd369ccbfc95da0b194a01. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/FRX872181877.