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 0x2b7fd0fea82f7a381ad09091960939a824ca2dd844f43128e70407fcb993fb1d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f031220-3538-4158-a71a-f78e3ff45b52.json and https://artists.proofprofile.net/proofs/artist/6f031220-3538-4158-a71a-f78e3ff45b52.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 0x9133c8e0a09af09d154d6461723108d6133ee6c27c8c4cbf2e6c5c7b04eb6bc7. 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/QM3DF2247680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ffce2934ced625dd8ddcf6a01a8e217fa0a4667ffa9e8d7b63270849488bf0. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM3DF2247681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b9546c7cd84f0acde9ee145fe71e07728ca33c44437853f9b8a515c149c5b0. 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/QMANG2426557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ddd178e8e815c0f4a0fa90933b3ea83e54d739dc3bb37d653780b035827958c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:48:17Z), 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/QMANG2426033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8fd7df1b7d7324058cb6046b3868fa1094eb5d06d47e2238af78d3e1c58e50. 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/US3DF2438281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a3f6db2e0b1d194df178922fb728b82ef8bc593b9aa6471ef2c72b75045105. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM3DF2405719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881af5bd6c93d77ce44ccf7c544e22a67438438fa376fef69e15baca931c1a1c. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/US3DF2460406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878b0adc9917623aeb3115353878a1be77700440e44388040721908910034aec. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:29:31Z), 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/QMANG2455952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aac5a581b1a47689d13f82c78f938056589e34a0b53c7eae38aa82593dd6e08. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US3DF2455947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf630758b39ca8728f907861c1af8c681b0a284be6ed0c6ac45dde5e612f0dec8. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/US3DF2455943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb270d8d252bc3b5df5a85f3ffa324e915d33bf95b27baa4c4a435efd7480a71. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/US3DF2455944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc047073401392b3e28d79e7260936d838996e54c295c2b26ba51d6ba1bcdc4. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:03:56Z), 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/US3DF2468135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2a8aa298036671e24d592ca6c108932c253be6f763847691f2094c80c486018. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:51:26Z), 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/US3DF2468136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5fd5f252505980d7972e2ff8a0259d697b454055257f98990e03b6c6e4c91f. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US3DF2468133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcd8e9c73ae872e3739bee50e5fef30403cfe958a45c8ac6a575a5de128a61e. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/US3DF2468134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a55ba7d14121f857050c1d7cff86a9f074a870d159069d1fc940372776f3b3c. 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/US3DF2498645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96367255a3a3cadfbe9d313f067ac2d65d04536e75bfdbc5a1e308393fefa46c. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:26:32Z), 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/US3DF2498646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73be8d388d6b02c160ca5b5bf34c7d3b465d0e41022c958719c3d9bba1b30bc. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:11:42Z), 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/US3DF2498647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5411c978f57aa3b4bc9d138246acf01f81d4ca30fa33be97e1f1ca05c3b8fbfb. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:23:45Z), 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/US3DF2479578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7d1c9fa00b857f6343f1a8eb5a8044050b0a0d44ab8743ff752fbee6c8ad25. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMANG2202690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64003b0f7d14bf533769d3ec6e0c708bc0404217ead8cadd29063419df6db569. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QMANG2202692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc213e1c869070f663eee76e8c707b2bf0c3f6e126c1d05d4e096ca914085d11. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMANG2202693.