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 0x708ded4b55181d241ea2dea2d81a3423a2960aab98a2c61ceeeb214482345b6c. 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/b7aca9ad-c8a8-42d2-908f-44eea2fefa07.json and https://artists.proofprofile.net/proofs/artist/b7aca9ad-c8a8-42d2-908f-44eea2fefa07.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
First Strike With The Devil (2023 Revisited Version)
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 0x006fe677e2830dd7226118a11ed1c6f6faca58b5af1324d07ff237a5233d8c63. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEQN41800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6a62e104613bd65a4f30bbef74a6bfdc1887099e4f85f7cf7f8ff6f24c697b. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/DEQN41800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a598d4e8b29687d1773c88574316bf99c8ffc3b74794e99e8acf024667db48. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/DEQN41800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9414ef078f3d744fccebac837dda305732e85497d0fe9af45732f6719603950b. 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/DEQN41800019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b98b9b47bf5f2df8befc4088bb179c0a5f728adcd6713a9c0a88af5c6cec88. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/DEQN41800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb47e37c81b65cf6adb13ece04c4c36ba62509df63987a224b52fc48596f6913d. 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/DEQN41800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffd74f6c3d38aa367c46b40c66f1d56f1207d1c0f8d644533225d0dfec700d2. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZNWS2158390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbe96370382b88468e49fc3e83309320c6d9e2795696194b8c829041fb4577e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZMEN2132387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3582101a1dd4de60b59895c333bfa1f7c25c10ca774d2e13cba1ca939429074f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPLR2302802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be695d44af215b882f9b182823cd25d13d4e8e10fca9e92caecfa2bb6ebb4c1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWX2318179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ebb8d261fc7ea41a167e5c9289719712a85564480fce05e09b8903a4e1b298. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB22373963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb48f42feb98c9410b8e55eb7c1c5b3489130d284c1c26be8579db8442f838310. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEQN41800023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeecacdd66d2a57a230fee5843a056698444c60b888cc7befd37f49207778608e. 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/QZTB22373961.