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 0x278aa405d614bdfbf104ab2d14dc076f831fa73dd94c9ffd559176de1592c9bd. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9244008b-fd21-4cf3-9556-d60433c7ebc1.json and https://artists.proofprofile.net/proofs/artist/9244008b-fd21-4cf3-9556-d60433c7ebc1.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 0xc2121c77032feb366b876c01f40f4961b68b52f52082b5bc1fab685ca9463854. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:49:22Z), 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/QZTAW2404378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4558213ab04136f0719024fac3995c30e4e0e682e39454285906741185e80a31. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:43Z), 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/QZWFH2443137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946f7ef93adc8cfbe2278f10fbfae60353dfb84e1881b72dd5bde96a6f651da7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:21:26Z), 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/QZWFH2443138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9003bb7762de801f77d8559ae733c157d9d79d358f10202eb6ec1a17da4f73. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:06:18Z), 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/QZWFH2443140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f21659b90660e88eedf32400b5e320baa2255cdc0332a28fdf89c3499f8d5e. 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/QZWFH2443141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20598b873f32ffd36543701a77ef4c211ce8661fed458315f3a73480fbc07a46. 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/QZMEQ2462124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d683e32c8d7b8ed52cbdcb40a1bb1bc1784cb6756851c8cfe85acc9430affb8. 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/QZWFH2443143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4400e3097c690af920a7393ec94a77b9fb97da3dff97db70407d941474a4e2e1. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:10:13Z), 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/QZWFH2443144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d93a1d7bdf02ab2d4ae8298b57a28d9b72828ea10de23e3ef11a7f953ee9e76. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP42515402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b3281471ed097deee61cc8c0c6d74ea33b877a8cf697c34134c3726b581bfe. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZRP42515403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e177e28f9eb4654b7af34bae3538cf1b5ace1dc470deb5b92079ed4a3a4b09. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZRP42515404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424f54491ceb803e7b3f4598de9d553df69b19cb5090da5b3744f55e8d2ff735. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZRP42515405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7e295b8c9625c5a44028624dd309da425e432d140432d34b4b9ffd56492026. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZRP42515406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070616b62ea982a33acd84a879e9eff995d6d1513d94571680754480fd42b127. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZRP42515407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe10474c86a1cf282ee5c78606792d94a196c7ba2ea5bf0a2fc96845becb0ec5f. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP42515408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784843aa50c9616b404c4536de2e9b7a0ebb03f6a47883f864bf72325bb32a36. 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/QZRP42515409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5fae883fd4896f24959b13da0b050ac8eb2ae59d684b0b5b23b749960c86364. 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/QZRP42515410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b2518a327d6ed31fcd8477e2922070d1111b071744e8bf8ccf8a2b4196cc17c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZRP42515411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10afb107a58c6ffa131e718e3a0025adb45e6c4d18261f405a7ed0fd9fed7ea9. 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/QZRP42515412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9398756396eeaacb6e610284474084db58dc021aadb53e223a2c0b09c2b24dea. 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/QZRP42515413.