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 0xd66bc513f7dfc7ee3a2c68fead4b719256a0d8a7622ca44ffd6d8bbae3a332f9. 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/07a4c6b8-bdfb-4fc5-8c5e-23c24ca033c5.json and https://artists.proofprofile.net/proofs/artist/07a4c6b8-bdfb-4fc5-8c5e-23c24ca033c5.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 0xece0c9b549e8ece937239867f2696818e0fe4da7ac2cea2381ef92574e987dcc. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/GB8KE2407436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde48801fa2434f995597417d9bb598921d13a68816b7bc3d21844fcd4e1c0f18. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/GB8KE2408970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf73f33aa2e6fc88b9759fc77a0f01f25548920f28c5bc82da39d2a59dfbaffd5. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/QZWV32458520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbdd26595b5b029eb55ff589824f362536862050b16493803aa543fa9b2547a2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GB8KE2423871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb73ce48d1fbb198b75cae329376d7f2da0e9dc9b8e95c25be28c7beec5aa65f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US83Z2503622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ab2d9cb80351c1df8207af71f4c5924a8dfeb4325c4db8448bc29ad0ed8878. 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/GB8KE2502476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1975315c9650d3881d031124e18d69676f9f6241931d774ef7aa86df586d0b3. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB8KE2507233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05195b17b328fc33439ecec825a8ebe78922a2273d9f64f937c53b7e167d610. 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/GB8KE2510231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37df7a0da5a0146bfe75430012501bd24c28a06e79179668c2204770aad1f909. 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/GB8KE2510234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c6ccfb0c3bb752745b61e29bd81c2596eb413ee33f1e1319115f5f8bf0fb84. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GB8KE2514327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4b3e584e83f998665d8d18fcc3a95918d8f27fee8bc14e523ee2fc1e6053f0. 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/GB8KE2514346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52423e919f8b6ab8222d6aa20b918e8f3443f725e6df553ce92d47c962dfefc5. 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/GB8KE2515700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4b7c670d754d215b2c39537e69814298b442b601c5a2da2d5d89e483616ceb. 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/GB8KE2516170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef5712b41493ada4320d27485ff7056655744e722fe7c218221ed44ac25474a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/DEPI82559358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbb7ae728f5387406d5448be9ead0695c194cb75ec4df196cc53c5b470de3a7. 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/DE1QW2503966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe11f8a6fdcde71d208d34ff07d94965cecd36684ccdca9455fe3bfe0b6c423. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:11Z), 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/DE1QW2503967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab706459a3ce11f924098ceaaa552aa6e187f2791151edd80baf37632fa28234. 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/DEPI82522626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225ad29eb80dcf48403a73d9dc2efcec5ecdcd9e26ddd5cc6b5c5b79b41f72c4. 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/DE1QW2508155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3174706af431a5f0c7ac4cd1a56456d73bcf5e442cdc777692d56fda85c5c32f. 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/QT3FE2531776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfff5beb6f374d1dc54e7135b3cfea1ef8e9a4e5cfba2b3968a40f8a3665dd72. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QT6E52537745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271573cd9a110ea5b7670fb63f6700d26f4bab4720bcb691c740a1f2356d7cc0. 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/QT6E52537773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4fc8a2559d3da5fffcfb551808ae424d5385eee48f61d82005340823c6ee7a. 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/QT6EA2503821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92cb78606e6c984b4115ff97840be1ab1d756e9640ba989417841ee1b4188a74. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US83Z2561614.