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 0x06ae667b6e130ca94ea474c1c960e9c9b43d87c8d8db79d7bdf7d2e4d0ed5aa3. 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/c63ba53d-5483-4133-8e9c-4522c8d9757b.json and https://artists.proofprofile.net/proofs/artist/c63ba53d-5483-4133-8e9c-4522c8d9757b.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 0xb4d3517ee68deb2fb8fc7f4db01e6a168f2d1a652b4666b6c48456ba1781e77c. 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/QZPLS2352059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b8b758e204cb4344e48c6182a1d850b3e9172764892dcbf0652bd8861ac3ca. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CA5KR2386021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b26527d32de7359195d2d91532986b858b8c8e48c54f7265011023bcacdfb77. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/CA5KR2397076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564403f114c7854248533069fb5234441707f0fca84ebf51b97fa5ad319e7b92. 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/CA5KR2414200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db83dbb858d0bb171012300a948eab25075edfac2b4c483bc05127c33b2e9cf. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/CA5KR2419925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04954b31c6878d0562154a153675e090c436673c83a0e453a719c280e7499098. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZA742422167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7429f19380e735bf213889fb6c766fe6dfb699abf05ca6a825572cc1b3fb155. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/CA5KR2419926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58616417febc1232285b4beb8688a6a8e6673e0efc70134387517e22ef9fae27. 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/CA5KR2429254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af25e3a829efaacefbf57f48e7a8c10f95ceae6c4a9aea646ae98d6dd18e91b. 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/QZA742422168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04954b31c6878d0562154a153675e090c436673c83a0e453a719c280e7499098. 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/QZA742422167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7429f19380e735bf213889fb6c766fe6dfb699abf05ca6a825572cc1b3fb155. 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/CA5KR2419926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58616417febc1232285b4beb8688a6a8e6673e0efc70134387517e22ef9fae27. 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/CA5KR2429254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d116949572353f21b3469c5e1d6af9347f161b3be7e2ef04ee6436df13f7fb6. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/ESA122435101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4596f26849010e9a78d991a1df523c347839baf7cfd2e97549bdec9968d86a. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZAKB2422515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4525df80cc6aa72cd685fc2b1f40214e9b5b493e047a079b6a8ab6aa9f455df. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/QZAKB2414669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b5e9187adf28279b6ea03fc890d4dcc90764699b279a85e5a380fa8d0c868e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:35:11Z), 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/QZAKB2432865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ab293401a06fb2f10c7544aebe40c5096c8cc631a3dfb98de904ef3e4abca5. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZAKB2438185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84267c06566537616eb48532f871d7b2c84055e968f2cd4d4c7871a5ccd6a9ea. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZZ7U2406366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568cfa3f588bef4da9da42307f210b2eda031c21ab45661d3c24cb8652fcfcb6. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/QZZ7U2406371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06da78594eeedcaf83d795fbbb23117ceb896c508ca0139cf8f390fd112c98f2. Chain 2 (Bitcoin): anchored in block 956430 (2026-07-03T02:22:42Z), 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/QZZ7U2406372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dc25ce4d2847d12efc66a956dd263074c6f4607af589ca6a08640811990613. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZZ7U2406373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cde4c7e24e967a299d576f258fcb45e210bab178cb68b65f8d77be5f32ed931. 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/QZZ7U2406375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07fedea68680e8e9d2c9f0dbe6cc680cad3caec9aab36fbd72cd56bdb6f79d58. 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/QZZ7U2406377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc12471392077fc73c2107a76a901f77a7a735acceba37b788f23e7bf84d86869. 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/QZZ7U2406378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c5d59e665e4ce375ba5637d9090cafd294f9a7e415eadedb1f2224a39bff64. 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/QZZ7U2406379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77e059a88406ccca13899b3bff11cfe9f0f1ddbd6239b0361e1bd6e15f1ecaf. 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/QZZ7U2406380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2838d493644a939f41993634c489e642691da0444354406ef0de87b00f9ce026. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:58:14Z), 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/QZZ7U2406381.