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 0xf59b92e56d5f8cd418393c9d97cba0d3bd04ff91e8e91c30c5afc594cffebd85. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fb34ec2-9e7c-46bc-88f9-927d589c38e8.json and https://artists.proofprofile.net/proofs/artist/5fb34ec2-9e7c-46bc-88f9-927d589c38e8.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 0x71ab8d3c4dc765e001c579056834b0eedad8e8d0e7f64b1aea4812072155341c. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBLPF2402912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8062a06bfe88d796f8160508690c23f2d476346719a655397bba920067015f. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBLPF2402914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295a5605c5daa6e90f4f9066328f5d9c059e9fb599c93bfa872052635ea9139a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:27:34Z), 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/GBLPF2402916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d2b75ba17b8472a704dac041929d55511d9ea5c602b7fb36ba39e7e5e403f4f. 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/GBLPF2402918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb430b4cb25f87f29c796cf1658d39af6ec8f08796fc39c9d9f47143ed088cd97. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/GBLPF2402932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27e4f8b88105df5666e5e25738e5c43cd5be6267899971453ba7d3b70d1627f. 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/GBLPF2402937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cac3710d349f0deb02e6688de3efd3d5d8222c7c2573d4ca0bf26e10ce41536. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLPF2402921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8bd6334dfef03800ba4180c10da4ef80063c89ed35ada78ada7e74f7fa71ca. 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/GBLPF2402922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b367a88ed56cf2d45a61348a740ab82a2068a6d4c9b236f5bc10eb142de339a. 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/GBLPF2402924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac7eb616d3c85d117e186002efbadaeaa2d258ca7d0be2b2ed616eb263fa5ec. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLPF2402926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039ac17c88aaae3b5855454140d285ea581e8e52e6577ebb6984b7fb9f3850f1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBLPF2402928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35034298adf9918fc4bce991ea2eeb13f7f59354a996443f4031c3e4fb479633. 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/GBLPF2402929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacf3b8797bf1519266252115b987323e76e8d497355d2e9aea21e30b63ad6116. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBLPF2402890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55ec7ec38dd781a3983360dc5c245df09201db564062fe3326aa8d47ff75ec1. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBLPF2402891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4bcd51740320f9f754e3c58604e9aff3b11e5766f4930c117b556a1ddf4f779. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBLPF2402893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e8f7d592e237bb681b7f71bbbd0803d5eac24eef6ea07361fd80c0eb3de2ee6. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:52:11Z), 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/GBLPF2402895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b3481d8eea3581b1b1d699acfed85e09762771a40cf6af40d8ddfe14c987e7. 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/GBLPF2402897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceaea8053819d6726592791a712e94328dce38d25802f92130dfe98a911d42e1. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:44Z), 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/GBLPF2402898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8750b935aa48470320f9211991718e69139b72a37c5b81f8ea0f01521a6e6be. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:56:18Z), 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/GBLPF2402901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8f7fbc6be0d4085d4b644f5405a8ba3b29a568930ca6c5106e51f3fb37d560. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:36:34Z), 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/GBLPF2402903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61767fa6f15659269409074146b36cd42ca973e29a4b88fd353202d7c0c35b5d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:10:43Z), 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/GBLPF2402907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabee20643a31c3020d5656a665ca72dcd844e8e3b03dbd3035a35b25ed525fa5. 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/GBLPF2402908.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b781d7c84b68dbbf45c2dc8735b47a916e30ce58909513e19a077d76a0076cb. 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/GBLPF2502895.