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 0xf143390f246342b8cdbf3947be831cf94d17e7b44b6f702e0e64d590b1161bea. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01690bb9-5801-4bbc-b794-c95c0d398ffe.json and https://artists.proofprofile.net/proofs/artist/01690bb9-5801-4bbc-b794-c95c0d398ffe.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 0x9b1eae49817660bd6dc3092cc05c628889c90076dafeb93ecbabd32b9189aa2d. 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/FRX452518043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75dacfb9acfe7f8cb6badb05e82220fab12b62ea73d9a7a5147665b5beb4e40. 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/FRX452518044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf39acf696b5ed682b1b2c90a6b92e7be8e544f63cfbc2bf1e2007f09996fd30e. 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/FRX452518047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf03e547cd6e8b1740940209fa9c3966ed9ef87d186fd30a12361956385e1e8. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRX452518048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x974ee1842ab907d044c156e1ab044ab89e693a0f4aeadbefb55c367aa6831fa1. 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/FRX452518050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13b7a04c4d16921f6388dd5bb63a60dd1d1c87e81fdc3ffe68676c56a6d93721. 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/FRX452518051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3df21de8884242acea4854da0a38b3329f6fe2a607ea608d6039084470be23e. 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/FRX452518053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bbded06d8c44144560c2ca818103bca9290edcf3c5c4c5148e78929edab244b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX452518055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03abf5490f59fd9fd8df7734185c18b7eb5cf4be870d365ebac8ffabc6a5fd7e. 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/FRX452518058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce569237d6d12e48da2b3228d751b9b20a6ac90ff054aa32c00848f5a0bfe962. 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/FRX452518059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a79520d5e6d2a89b42729bb6a146ee36763eabd2ea88785073987adf4563ad. 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/FRX452518064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdf96486fb599060e7f060dddc882081f473f3d3bc15233e6374f0ccb3c5917. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:14:48Z), 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/FRX452518068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c970b8ba41f483a516c6731e5aef8eda52c1eda1e7f4c8889b815a59574cff. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRX452518069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe65a81f465cdf6a8301f1ac3e413d819b956bfbfc281d767b0ca883687a4911a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRX452518072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27038684df8d74ae3c6cdd77ff1b3f1298df4f2ba7e05909228ccc2b2f94d34a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:26:52Z), 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/FRX452518074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f04dba4b109d60d2d8d7e297ccdce2b31c15e65065b20bf8a12233d786db3e. 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/FRX452518076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189870330093e994c6ded3b79eae2fee61ebd30c7ffce9d2c1077e65ac051117. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX452518077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161fb2cb7da46e43ac8b041325fe814f1230dd3ddbd34424eb18cd35f2d54ce3. 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/FRX452518078.