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 0xbcaa74ad0a42d580d88559f7ea4937b9db92906a793dbace58e7d722e712d4dc. 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/0cc9e44d-623d-4d70-9752-73b38e438c29.json and https://artists.proofprofile.net/proofs/artist/0cc9e44d-623d-4d70-9752-73b38e438c29.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 0x792e2d72ef14e0bfb1df0deef6b938a21790ebdf4b0659694701e4a69c019c29. 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/QZHN52253415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffe000b10abf0f873eb22db1db4a2c626b94597b24245b444e0f318f485a48a. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52253420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59087203eb00ccd62939b32384f2c99305767842135e99da906d2abbe298a4c. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZHN42293637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f70671b4636f065b23ed7ed0bfabbc933a3baa3e1be11990de4c8bd8d1719b2. 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/QZHN42293640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7cee32abeb4f500224bbd4de90f9fe3a701fccae7c20a66d32fb05fdc87f282. 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/QZHN42293641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e7add2d73f9b135f149d9f4fc238566561d332c85b65f229db037cb0b8f441. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHN42293643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e249279ab8edc539877afb3b0ed2250db5324896514a03878af0bb540eb45e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN42293647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78adb20d0fb3fe12db61fac55b4ffc2abb694718a488d238f455bc6df7fe18ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN42293649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a706bc454c4fce81ff891038a95e03aa1526b23777014a4c9fa42d802379e5d. 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/QZHN42293651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5030df7406d6270f0c64ae923c610ae80f2b835cb96629f5cc4540b61cc054c. 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/QZHN42293652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb2416eb054285e4530abc8646308b609e95994c29a1d53ff4870cca4e69dd6c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN42293653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a0295638a2b3fe2b398611c0d1e53222fe3730b0f9834c9c74cdb7d9cbbcb9f. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZHN42293654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a30d47284e1637685d51a3362f374b220d7d050b299209a5e19bd54ca6fbf8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN52254701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e8f3cb18ab40ca9333fd3dccd8d0ec27bca6db21e72bb8b91cb65d5edff2ce6. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZHN62287473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c07dd49838ed5d678c8cdb5662bdf8e85b9d16cd0effcd17b5d1dafc797c43. 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/QZHN62287477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11627c642af1e3a5ad0d5ef82642d7c6faf7583033f88575c2343dd830f78fa1. 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/AEA2M2252124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d98e62671d5039303807713e68913d6d89cd458ffbe17a03b1f31368133a0d. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:04:39Z), 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/AEA2M2252125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5886ac659a97ab55df68a10ef6a7e9a492ec3f45b5013121a15771b54b7873. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AEA2M2252132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26df70d95b7e11d1d2f9c0282d841193cc03c19c1720ab751141b99f596e7ca. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AEA2M2252136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8851627a44504ec8a9198879d6bc0b67bdded038fc33e0dfb60c5e3e4a7dc550. 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/AEA2M2252139.