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 0x94d21f2971441c00ea975086534894459cb3cc5b9b3d5162f02d00877bda2359. 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/99890518-d9c2-40bd-9eab-80e73b7400fe.json and https://artists.proofprofile.net/proofs/artist/99890518-d9c2-40bd-9eab-80e73b7400fe.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 0x533333d682ad8f7f7040d8cb5a75a058c131b759127216c4ac0c33648cbcbc34. 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/IT2VK2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x078c3ab80258da48c8425522789fd297d96f870ab55a009d9ffa33a03e3ef174. 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/IT2VK2400027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc563fe4a65e58e0e2149bb63b0e8acdd4b0cbc83109fc2ea77b42247a02fbac5. 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/IT2VK2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x777fa1ac4b5b72f264773cfa3bfdbeaca9e163cc8665ebf8c678685491fe6264. 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/IT2VK2400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654f05b92992d7a0a9cfe868feb59782f9414e0ff9a4f7416c3f53c58447550b. 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/IT2VK2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9def73893f2992409644f1310a85f892cd2cf592d4440df496b668e224596ca0. 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/IT2VK2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468947ffcfae130eeacc13eb17bf9356eb28a149c777863d3050ab11ade32bfa. 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/IT2VK2300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbaeab725e5e6c7e235bc725bdc1991dd3b48d380800873682d751379f8ae94. 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/IT2VK2300125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e9e808a3d1bc4c46480d5f54b269f04302f980c63bc0d228f29ccd3634d6b7. 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/IT2VK2300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c4bcf32989b1c586fe7382a2a9720b6a2396457d1ce544b19f15ab8d33349d. 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/IT2VK2300074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbce20075392651a3f122c6bdb9aba1a9bd5a5f9382cb1aa11d734d38204642. 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/IT2VK2300055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d508f36fa4ff89adb96fb5376047b2aede8d538abd6700a2858d35109e5454. 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/IT2VK2300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a0e0695f1c3bff05155fc9d6ae2b17c067e3c63fa14fe1465aca4a221c7e7d. 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/IT2VK2300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d13fe665b9c12160f92d9567e7cf5eb82b43accf748ef7c7cfad0dc3f9c4fc. 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/IT2VK2300019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7910aa199de0751af4a37b149de4f310babbd25ff3b2e0afb483c3572ff619f8. 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/IT2VK2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19b4878e59ea551bc17a2a8e5f9d5e88d72ff27b41b2ec0e8fba492b91d410d. 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/IT2VK2200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544de04b08bd41856d1fa679612a7caec0362ee54c61e16e1765adc87aaa443a. 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/IT2VK2200049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2858750e23ce4f2f51cec5ef4a5431df975a5bdf031367558ee6738792c943b8. 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/IT2VK2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893ed5d9dcee7395620a354ada273abfc36e08eec347e81e5b362bc48b3f465a. 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/IT2VK2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd090475201a1a9752481d74856d6f66b6b08e049b16f2e99d37a41de40264122. 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/IT2VK2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4b40475c4df3309f3f399fe4137e095605731dae897670956edddb8bddfef5. 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/IT2VK2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f10f4e67010e05655edbdb886409f036e32c3c252566e2b11dd449501bc9c1. 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/IT2VK2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bfaff5cc1a2c6a73497e17e522f33cb9f92e5b3a00fb93d120e1a600d665ea. 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/IT2VK2100076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4534181cf38f52ea442477acd1e9705bb91d06bba0b5b6da3b5840855ca77ed. 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/IT2VK2100050.