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 0x4a4ac7f516d7f4e5cee3be0baf79cc1499088a2b783715b93802bd8673a9bc0a. 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/0b1e7733-7447-4f57-bd6f-44f9d9e3eb5b.json and https://artists.proofprofile.net/proofs/artist/0b1e7733-7447-4f57-bd6f-44f9d9e3eb5b.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 0xab7ff1f39f6f81a1f0923caacee0beb20ff9ab45fe5b852a365010f96a4d9e7e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR9W12215745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f150feb02ffea6fe689dbe739a2ff07161e9633fabdf46d909a353c440b60d4. 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/FR9W12208470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d634816700889cd354a10d476c8f17f309fd421e3f3beed16d8954b1e71f7. 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/FR9W12247326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d634816700889cd354a10d476c8f17f309fd421e3f3beed16d8954b1e71f7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR9W12247326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858b68492bb5a0887cbaf7a170602de377aef061f26f843343551936283aacc1. 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/FR9W12327065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf86291afec9e412fe03d68fb55575e12cd7f9b2d4327050c872f7d9592333f0. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12315405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66e6fc4aec4ad680ddebe495ecce1cddbd1cc59b8bf1f6d0284ff45c589ebce. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR9W12141969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072a1a3c779164dce578d9bb05ae2d3152bfdee96da148da71c3eb650509cee4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR9W12141970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abeefa2f2d876e752d8e5492810a25577c8a334bab26316ceb15b6a1864741f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12141358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed57d681c770937eff3d72fcd5a942f16ef1a46a74aa77efc8374cf8eec09d17. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/FR9W12141971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55d1b2bda30544d6e66830da37eaf75d63a4d6bfe43c25c56a5dce186ca8a76. 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/FR9W12141972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c990e2141485913e015b5ad2c617863ebe26cfb1064c08951eeb3f61a3c71c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR9W12141973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ac49699bda5413eaf99318e7e01e15fcf95ff002bde632a1eb8383e80af3b6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12141975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf1072638434f5b17ca018ba51d46530864f97acc0ec3e9717e699a2d493a53. 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/FR9DT2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e5ccb6bc08f6294539cd3d1316446e51a583dc8ec529be195d56a41b5325e25. 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/FR9DT2300730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x858b68492bb5a0887cbaf7a170602de377aef061f26f843343551936283aacc1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR9W12327065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf86291afec9e412fe03d68fb55575e12cd7f9b2d4327050c872f7d9592333f0. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9W12315405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb853193adbb9426b0931814f6733b451cabcde0fd4d6af18a2bf2a8a0cfacc91. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TW2349510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9576064dfc562a27a00e4572a81909ee082f103719fe7b60c697e36715d2a82b. 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/DGA082212118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b40b99d5d6d02a2c083668e82e4c08fcedb1f5a4ee20ac505bea820f1c946a. 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/FR9W12220251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b40b99d5d6d02a2c083668e82e4c08fcedb1f5a4ee20ac505bea820f1c946a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FR9W12220251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ccaf22e5fe773cec3d26db4eb63440bb99ed69286075b076464c6798df5e9e. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZNWU2187346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177b68014473493be3598379ae70798c79b3fdbb1bd6871c76a015c1b69a1d71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX201972009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dac0754ad2e232a746f2c9215664e6c3739c5d7c381594c859b90b35792e55. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/QM6P42091084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba37e4753d0efd236d8ba750bcab228f80794015acc0f8e53ac2618a2fea0c96. 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/QM6P42091129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14dac0754ad2e232a746f2c9215664e6c3739c5d7c381594c859b90b35792e55. 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/QM6P42091084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x177b68014473493be3598379ae70798c79b3fdbb1bd6871c76a015c1b69a1d71. 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/FRX201972009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bf62f0f586608e1770580d9c5d570f894e1e8119a6dbe71eed4a228a1bc27b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLS6R1858392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ca9f9af522e3aeda32dfd036c28769e894ceead06c1c48d9cf55217c354e961. 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/SKA012300459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d8032fa78b72f6632638cf195b85a56675ebbe61987536a23ec3ee70515c789. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTAY2331787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7ff1f39f6f81a1f0923caacee0beb20ff9ab45fe5b852a365010f96a4d9e7e. 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/FR9W12215745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb665171bddc09e171b0947a56928d66a3db833f4615f27fc197376a526e948f4. 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/QZES82274408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89d73d7ec7e14aefa5c1967fb535774d840d15abc2f8dffd16069e1acc9a0d4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRX202304244.