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 0x412f17cda64406f602b5d87992dfbed4db3a8cb5352c7bf1452b3a41d1073767. 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/dc2b31a3-9816-486d-ad84-05dc19caef94.json and https://artists.proofprofile.net/proofs/artist/dc2b31a3-9816-486d-ad84-05dc19caef94.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 0x11cc649a21bcd0266f85e2a76ac64f46d5d5ac2d339520fabb02482934898299. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USTC70871059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x659affceafb926fb631e4836bb897dc29530f6e5efff53fbffff3c11792c8b22. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USTC70871517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fe6a5d76296b783a827c63f03b7346494f8e899e3b18996f2b970725a5a384. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USTC70871510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b5accc38549c9804ab91f85511a9686c1934d222614aa566c55ae5297e1bb0. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:19:29Z), 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/USTC70871514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71fcfb5fcc3840dccaefef27ba9f17cae85fec686ae6a37f9409b460504ec89. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/TCABN1375020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58061a37429276ee2f948b699171b783738b4b5860c4f832244a011fb207815. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:57:01Z), 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/TCABN1375021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb4b9527dee97cc65ce914fbdb25df5ecbfca9f900aeb41869f499ebef26564. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCABN1375025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d0b83d714a1cf9353b95a5064f3279c1e6d84229c800c677c2518d7257d269. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMJEH1800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb428da3fb306a4f143f2440d1d1ef6a405ad183d8eb5ce6c9b2babe19a146e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:55:32Z), 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/QMJEH1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf364103680ca111e537aca6a7a152fd3b22d60a1cf161ac4a597a328886708b5. 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/QMJEH1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f2207608f761f0ce92920a3bd2a575aca1601b118b87c57426dcfaf7f6506e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QMJEH1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52334d940cd2dceb26467c1c971122a8c4dcf8a28d424c3cd495a73f990f024. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QMJEH1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d53cd6d0bca6d9ce79e1d2e44d92db686aa416c6c0a50699f3df9db690bf95. 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/QMJEH2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fb1e6fc6f4b36344e4c58f4ec767d93a3a0fd048c2205fcf8071690af94a7b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMJEH2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x254751514d4c2676727245048e152d2f5e7cae728465ee5257b4f6ea00106f76. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QMJEH2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d01001161f4c0aa1053bac54123abbf212395c60ce89aaf72e9834a94818e5. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMJEH2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19783f0c578b11253bf83046b554a426946bb38be270710e33977f4ae760d5f1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QMJEH2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4b0d4b6caa5d121caeadbcf62e1ca8439a6a59630c212a2094352d3297b0b86. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:38:25Z), 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/QMJEH2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4b471bd06446927c70d6e86f297e4d5ba5ec3e29a5b8ea6b0d10c705f2d260. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QMJEH2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1cab6606d3273a142916b2502a653ce253abd922622591f6b32f818939be0. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMJEH2100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8a70e1f21b38888c529a553595ec09d04a6f228a846301be8de5f4508fa6d5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMJEH2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315c589c74634a5a08dd8ae891c05d63d338dca8d2f06593ae36583438f601af. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QMJEH2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd58d45d75c217ee8b8a07af879308105c2cf83109939f8abf53c65811aacbe7f. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QT24H0000041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cb074398615bb048d0f8d2b46c735e2fb0702c7dc071f399a2e27a4991928c. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/QT24H0000042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e7293bf680a40f065f2c1de0255beb1879cef6ab8a78636a471bff54215a1e. 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/QT24H0000045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a18735d39ab736f4e60ae3bd179b79ef6cda160f575ee856175bf3750ad271d. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/QT24H0000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd424f2e705b49320a1028cb10f13ca3ecf79e61bb3c75655fd71e9a4c3b30. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:46:09Z), 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/QT24H0000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6018c88260529cedd27edd9a4bb4bd9c82ad3155674b23e2c848657b5fa1707. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QT24H0000047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ac22de905b8f5fc475cbdd48a1863bbd7cd1c0d8975a8d08d64592161c472e. 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/QT24H0000048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86b9a910efbad4f8d8568f37044c499bb458193e44185b7361f005e0b597df05. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:50Z), 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/QT24H0000049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82d4e49f0cb6560297c3e0407f24bdd7d0c0184525810688f57220683bed38a. 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/QT24H0000051.