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 0x28d7ee06053bb6f48a7ceef2e90297f7042d993c4ab458023381d5d949a7fd0d. 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/495ed86f-9c99-4b6d-addc-50589c4dcf97.json and https://artists.proofprofile.net/proofs/artist/495ed86f-9c99-4b6d-addc-50589c4dcf97.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 0xada947296ec0a06a5986218eaf979acc75bff5dd5515dde0dc60b2580deadd90. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZK6P2038184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4d29dafd9a5613abb7365c273d8342ffee5223da76bf545837c8cfb3e44d97. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZMEP2041245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62eb8dd8b92db0ba42a8d3a3dec72cb29f44bb6b6c41e1a413ff70e2cd6b5f03. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZNWW2033013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81f5ed0f00cde4b7c171ff404da27ab6db9b3741971e33133ff425bce41a4b8. 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/QZFZ72157738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4faac4311b5306b86528f1a5055305f891aa7b0b54891feedd844393c1586e61. 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/SE5752193850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfceab7d5a2d455b492da30a802bfb0800d5d16ba488b328a283a39c710c89591. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZHNA2115186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x605f8a0005944280825360d814a6ea6b021a64f0b0d9721a8bd59160deaba3b5. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZTAU2152390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22249c5bdd99dca0de154df0b189eb26792194d5d20ca95a689283986980deb1. 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/QZFYX2296868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a8eb6bc689144f1722a6734f3068943debd12511cd315c37dadb05437592ea. 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/QZES62221196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86e26248ae843a28ed4fcfb73bb8f4e68f3b0d956d4ccea1b653b4973607267. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES82294287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb553730423a33ece613739d4fa9df14c731d99dcd88291f43d0e693a3214ad41. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:58:42Z), 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/QZHN62245428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01935fe9f8fe765fc4c89b5529e8e50262d358a1461bfc0fc7c6ccd79826a4f5. 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/QZMEN2216595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937b319350a07d4abc48b62f3ab6dee18ffdc692c7b8e10820818dd198f809d2. 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/QZTB52284123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538307ead423fdbee4895c784a7d1b2183a26028e2ec7e1be3f90d5a56bc65ec. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZDA82309221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c96f30544335fed15ece32c9b88d99718f081b9878bf05e41b3fc57a1d98a. 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/QZTAW2398228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f2c5b3bbbe663a0a8c415002c969cdebaba489713f0b6970ea6ef3af222065. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZTBD2365417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a76ef24d47e01337aca4b82636a28b65ce48e4024759cafd4e572de869a3a4e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZWFH2325459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9826c76b333e6ccd15b4cda68b6f20b73a8bfdd07bfc1c9417f478b4a9c295. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:53:26Z), 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/QZWFH2325460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e7b85d5610e40ec84d42627a2bea9b730460bfae010ac966733bc7b3bc7d923. 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/QZVEM2360636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1f65a8f6cca6a6ba318dd563f09cfc0864f625aa3c361a7041d69bdba4ae57. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZMEN2446814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7f68fde9d9d6c1d1e221c5a5d303538974d11addaf7bc65fc5e8572dc19db5. 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/QZTAS2413801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d3f10aaab0d09c0acee4cea2326f44267abb9308da4ff1d0df8d8c5f68612a. 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/QZTAY2486286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf0dd5d037bcf084cf7f883872ec9ad94c807d9e51e23fc9e96f7c1028145e. 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/QZTB72447177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3316662cbb22324078fa4f771cb3323f3bf9322adc57a1f58fc5313dc7ea71fb. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZTB52500999.