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 0x4009fe9d0a170378951f4c510fe5d4b9ae8ba604a3b0cdac007c89938b7cd793. 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/32fc8def-97de-4848-90c5-71bf2213b312.json and https://artists.proofprofile.net/proofs/artist/32fc8def-97de-4848-90c5-71bf2213b312.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 0x96157095751fdc5e960976a4eae4c0ac77b18b120864cd284a173cde58809fdf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:48:19Z), 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/FR2X42243335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c827fd7e131c29a0d426a071fa11096ab5b0355238a7bed0547857df23091f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TWDL72205086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbded6bc7728b90d834ff8a8ad79735c1ab7138e8b1d2668fe5ba5296e95b6ec. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA0L2367648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8777e18f2348ccf93f4af534ddbc27018b72858c08eb75dd9a7a37c4fd5328be. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:43:37Z), 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/DGA0H2337467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1d8a9694b29db5bf80883ce0ce874063b765792520806c142a261bebc76ad93. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/HKG731697738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da6cd2bac2bb2e6a272d1487ceee45db442d1141472639743b2fc6bd21f95f7. 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/HKG731698553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6366c4af18b39139f1a563bdbf177273896b2e3df4c12cd8e73e615d13463b69. 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/DGA062431430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51badb7e791d79ed8c975e84392ae37aaffe1dac9eb28bba6eeb6c59124dbb16. 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/DGA072431073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d295cae0f9533afff06a1fd107e3bf3ed224bdf9ae770800ae4cbcf5b1be60d. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/HKG732431816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3905c8a985434b0c032542b1d5a934020cafb4c8fc9d38a677f820da702e533. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:09:51Z), 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/HKG732428163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2953cfb4080f5ec3462e741350d4c587ef4cfd3f7d36ac021b79a36dea1b0b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CNZ632401093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24072459ee8c889fba0f6f03a5fa64965acf7b1a6da35ec6ec6d0381f329e7f3. 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/CNZ632401094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7efd634263ce2facb14b7260656dfa7932f6d86d3264164b980d69c21807e7fb. 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/HKG732450438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f56c0630f1090204342039e9a51495fd08b8f69e5bb7cd93725d8b56b2e8a1. 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/HKG732454384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5f49104f78da79c80e3cf40d65e1ea00c65d74b9121e8ca02e91e9c5b58839. 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/HKG732553943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9562f074d07898007dd9da65fe178d1dfbd64edc88d33e441a22cc85442b01ca. 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/HKG732494305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de14d9c4b33470e2167e9af29a7064a1ab3aaa732603ab7fe638ba3c1a04b27. 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/HKG732497064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e2f09a2574ee2af3427d04667bd5ab05b4082395c6dc752b4cee5a3e9824834. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QNSM12401952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75a7ee31a353611cac4118bae630f7b4e9a11f12583e58ecb6d952156b182c2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:52:48Z), 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/FRX202593576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc189ea5f8af1ade6e786704c25a71127444d4ec4ca4b0df6bbd4f0252fd3f6b7. 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/QZWFT2506032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ff9a9ba342cab478c7ff5d5cc5c453d4a3ba3465dc5bc0af65ce9ed7ddd4cb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:40:54Z), 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/QZWFT2506000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c59a7ee59f5ec8c5184f0f9aa098c6391688375e6a58b01076b04ef172490f8. 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/QZWFT2509632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a7718351f72363a4c4519d2b8f664c7c9b2ee172f48111198b3d97f8ef2189. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QZWFT2509645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd16efd0bd529f4cd624e7b8f7ac491595f0602d77820c9139cd497ac6bd68a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:34:20Z), 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/QT3EY2566041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x780fdee13281705cbee3ab2ffd229cd24528c9960fc5f854b783eaeacfc30e22. 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/HKG732418986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b60fce0e4857aefaf8d5f74b5085b6813f51217c85f1552ee4c91c3311bcac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/HKG732425191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3a5f4fba7329cf341b023fca14d073569142d706e5a934e7252fa13011103c. 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/HKG732425192.