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 0xd64a3f1df54264fc47a5c36dcd23de7b637ca0132219f029759321b22a08af08. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5c6a3c66-f916-4d81-9930-c4ece370fb27.json and https://artists.proofprofile.net/proofs/artist/5c6a3c66-f916-4d81-9930-c4ece370fb27.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 0x39e539096252b257779f9de4477a09fc621c64da96de0144463190043d47135b. 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/AEA2M2257317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a42db1ae715198268dd8aae3ff7190baa2916848048cb89368a27347af49a5. 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/AEA2M2257318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189d1c33d633ea6ae4eacfc90d5e06061d9fc18f58c037fb958b991f8088d05e. 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/AEA2M2257321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51509f0c8cbe3d26d0aee821c074c0a2710ffc3c2c8b0e75d40d7891ac3548b3. 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/AEA2M2257323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec65870d7ddabcf9dc06e3e15375ffc76891afbe8d34b90242ba493db1e8128c. 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/AEA2M2257326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bd4a58d1804f220f471fa655cb1e0352a54b5b021cec03a72de611491d4d25. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:49:49Z), 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/AEA2M2257327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464141c2826702004ea8470694e1e58ac57c5f4aa36c7f5561092b8137f7e16b. 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/AEA2M2257328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14805b928636c860e6204e3b684a9ac3e938c3654f82488e1ba073f8e905e8a2. 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/AEA2M2257330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694d796ccc02d9b7de2bd46e28088059ffd078c2fc12629514c596f56a94dc12. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/AEA2M2257331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c6ea057b1fd4a5fc1bff264322feae955835f49fb6e4e4e446ee404e244603. 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/AEA2M2257332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da2196c78d78316bbe1154db63378ba934c4ee024c4f8476120756bc8dbbb2c. 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/AEA2M2257333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91d40fe0e42137d14cdfbceeead17ca6934715181f62161c9d3fa74b4bd65d3. 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/QZNWY2235904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b74fcba3306cae227f359c5cfa54055f20e1d98a4ee2a6b279fda65e0b6a01. 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/QZNWY2235905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26fa203f4c501a59877637caa83a8ff9ccb549dbcda417a64cf157cd3d933252. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZNWY2235907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8e164a9788ead87a0377d6d24ca18e37553ddcedc31fb521dd9f34b41ba74f. 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/QZNWY2235911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8382e88cf8b1458310d48bd6806ad85ab6e1550baf39479d1967ea0b5db157. 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/QZNWY2235914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddf5279830da646cb81eb62f2a22cf724b7cba80e457ba3a5cfcf94bb9662f2. 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/QZNWY2235916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3e6e2567d216eb6c5f1bcd8ef66e87f0729e059b9c81be4ef1ae4eb7f2507a. 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/QZNWY2235917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c81bfb6f10dc6ae6c30313db8aa44c2e86ede6bd1e1b6c98164449d1429bfdb. 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/QZNWY2235918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8c37a25f9d4b565e5aab04148e03eab9d9cafad70aff7343bbd9fd3bec3401. 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/QZNWY2235920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2169cf990db5c6a7d09c70bcd2a20021f53bbd825395f49ed93865fceacff147. 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/QZNWY2238537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35513c1c054c16fd9e16a2177584bd6e26199b568af93fed1ca2eb6cc81854eb. 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/QZNWY2238538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ac450dcaf0ce66ae95e3ea0907c1860f97d9fb0c491aeee3a85ccba396b1d2. 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/QZNWY2238539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8532df1916aba79c8a5b753d68f765180dbad4c941487b91e7a05538bbcdab61. 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/QZNWY2238540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d62b9eaa5396c6b53f38087b1bec02e1c1d6d73cac2691cfd1f866d2d0090d. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/QZNWY2238545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bff555be35be88189a1c01b309658420ff46b15971686405983c43ce8f46961. 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/QZNWY2238547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a07e92a9943baf8b995de4827e46a4e26d4b0a034a628fe649d778d145d02a. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZNWY2238550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc20d1aea93ef17b0f55a461a1d072006c61aa96ea037bfda8c3b135ab6423c4. 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/QZNWY2238551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4788bf8cb17858212499db07fed9b6d224d649a5f5fbcef0d0f54005dd06653. 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/QZNWY2238553.