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 0x51087deb5b3135a7484a6faf404eb2ea5510fcb7d5c03356280167904a0b0f35. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e322dae2-1ea7-4db0-8afe-a29faca945f4.json and https://artists.proofprofile.net/proofs/artist/e322dae2-1ea7-4db0-8afe-a29faca945f4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
トラッシュ・アンド・トラッシュ!
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 0x02dc8c7effa72abeaaa0f2bbf4666ccfff5f39a2c57ec28df685cc0009c9f325. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPT361800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe866e1bd304de113a84d29864dbc62d771782dd8b1ebe97c8e29b1a1723e232b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPT361800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2950f5dd8d219aff37acdc4acbc7e27d7a0b00240c8eb051f0f77813c043177f. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:15:16Z), 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/JPT361800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64747fdd2c8bfb7bb1e6a7acaa90d2697ac488e6d6688838b7e88eac0e2de956. 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/JPT361800029.
チュルリラ・チュルリラ・ダッダッダ!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16512429bbd4c0fab7596d292858f35f0f0c2c71525f5510058463771d686d6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPA651904454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5f3a3ad98ddf334f324ace8666f2bdbbfe3aacc3ba0fef8fb50ce5c18a36565. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPA651904455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27da500d8acbfa90d8989f86bf594c2aac92a2eb12f2c2f2ffe885087913271b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPA651904456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c66ce9a6debcdac165445967ee70ab4d74ae70fbc6f798914119752d927c2b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPA651904457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389ce0accc86ce65938c3bad60a2896c4d20a113868f562aad47120ee9823025. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/JPA651904459.