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 0xaa55329e528d79ad0b8ea05683f2b6b9721f7b92c8d3d100fa48fe8d735226e7. 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/2893693d-ec65-4c82-b8e7-bee0053d3806.json and https://artists.proofprofile.net/proofs/artist/2893693d-ec65-4c82-b8e7-bee0053d3806.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 0xbf5c531a2a026a8af6a6fde9d51f1b1425d775be488bd8e65e3109606fed15ad. 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/US3DF1952873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade193409793244b59f178234d7f486a1a21832dc015dd875807e9262fd358ee. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US3DF1953112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e909ba6f76d517f95e9796be48472826735c5192d2add8da9f35239b5260ec9. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/US3DF1953129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57654e840dd4fe85bea9de1aa5607c8ea40beed9480a5b9e61665bdcb20af86. 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/US3DF1825614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0651db686dcb55bed7f12d763eab556c7e63aa4a1a7b67a6dbad38c7208c87da. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:51:35Z), 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/US3DF1825532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b38dc85f620ac7926cd7a6cc42eec87ee398ac051bdff419b5872bcc923ff1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF1825534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62774b44e926110fcc447cf78830d673257ab4cb1dab0e3efed80f71a3cd9511. 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/US3DF1825535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b315f425d22838b9be3b06fdf40cf9e8b8431d766df47513d648ab2c7b434b. 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/US3DF1825540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f471e77e354f2d62b2aeafe3d25873e4f987147c039e08efd86e1bf9d29ad6d. 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/US3DF1825542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3acd2ea8751740a8d26b8b1f8cd4eb70d99e75291612f4264022d31e80b53d56. 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/US3DF1825584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df7d208153c2477cf5e8aeccb3a045fc115f53472c65f7d6db6aa3ff41cce73. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US3DF1825592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc112cbc197a32d49506a93b9aee7abe2f4a4a418a93cc5157879c6a2315062ad. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/US3DF1825552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc1f4ae4395c629cb5ce83ddfd04d65f4d6858090ca7c2ff47c11ee5c5cc0d0. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/US3DF1825575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e755f8225b224b702770ca838182e5c86d92f5c2652a80e9f93c4d3c8144bd5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US3DF1825577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0542443f82e09ef5c47812598542eaf1ab9435156a26b9788dde1194c45290d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/US3DF1825582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5aa16a31358c77a04b7f4ae278feac6fd33feadfd7252e289e325fa85026c85. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US3DF1828440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbb5ffd4ce69b48727def24eda584df991408cc1ba336cf059d044082a2ab4c. 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/US3DF1828441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a9b0e8ddf9cf061df1f293ada24e95bb262ccefde1ccb354bc98512a78fe20. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:08:15Z), 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/US3DF1828443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x813dd40d8d2bf6d028b9f201aee6913d6957671d89065017f4b3ff286425bbdf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:56:59Z), 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/US3DF1828445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bbb6236b24be1cd55e1a38c993bfa87f6202dd0f43795d3c9137eacfcfccd8d. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), 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/US3DF1919653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9c6f41c94b26ebab226edade87db939102ca06ef7caf0c646f7a2a80198745. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/US3DF1919654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7002c2b0de7bfcaf31211ddcd0329c79c421a30ff29883ee48c13254cb507760. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/US3DF1919655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe3fe7ec35a0d0aa606b25eb272e537c3e63a04da16c1f4beb01298ca32b8e29. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US3DF1919656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d2f7838fab63b320e1e807dc9b1d63eb1bdd5485562858fe004f0e0208bbd4. 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/US3DF1934498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88eb46e12bccd772c9cc5ff5222fcdd5cb31b0d59cee63ebd6a24573923b58fd. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USHM92091555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80bd6c7acfb730339939465e4638cb77ef66aa43b2975ad7650c91bf745c7edc. 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/QZHNC2169610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997616f3876a83de4e14709721d88fc4d3e4e143687774bab2286c1c8d332f3f. 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/QZK6M2299775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578162dd9b9b1f228650271fbc8e18bbbf494ddbe8d1feb25110e970133edfdc. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/QZHN92338657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdec654af02f8578c2c73b0202c367a962467dbe3c8c7f79f9f6fcfeefe82657. 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/QZWFN2473643.