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 0x307e7fa41bd8275e4b49200c22cd9fd5f489e10aaac44fa86f010bcc8a694415. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3c5aea2c-9637-49a5-885f-8abeaf53b1e2.json and https://artists.proofprofile.net/proofs/artist/3c5aea2c-9637-49a5-885f-8abeaf53b1e2.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 0x85786308282ec1556f4dce187ade6b93329a4710292ec3af9391ddc5bd513271. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:57:46Z), 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/QZES62516141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9213472eac29a3355181de380ee7b9368f5bcc97c96c26b143faae7769043aba. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZES62516142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53460d15d54a0ac3356614c1826a4fc6afbd289b56e6398697dcf3a7366c0377. 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/QZES62516143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3515965811237ada6952f4b26011a3a8f04efa0c7cec589a6e1b5a4bb29170ff. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:25:19Z), 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/QZES62516144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3996ecfeab8c205cbcb9cff75cb3dac6fcd06281d8098d9eb24cc0b06517f6c. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZES62516145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9351f366867231a9d8a103feb7382a505c4763c0a1f0ed158183f02e32fc46. 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/QZES62516146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aed14d1622b601460b90bcd904a301dc6d314bef5eef8ba2c8a984d69b81aa0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZES62516147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7814a311cff05d00db947966e7e6e98dba42d27026523a1a1676bac72de090b0. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:03:08Z), 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/QZES62516148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa73c14dd17ca1a20a4d1a5dffc81aff8ebc636038ac3f6ef094ff1484aefa3. 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/QZES62516149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398a75fd906cbd378dc6bf32a60b0b57b33272df8d29599181d61424e670a016. 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/QZES62516150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46fcdbba926108f29101aedf0bc4d09ec183dda253de4e71c68c525ad2cbacc. 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/QZHN72521412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1589bab0d2183c099ffcb68057a2d5c2a62d0c06fa4f3e812bb6118b1360f1c7. 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/QZHN72521413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76df53b3387a742136912ddfcc7bec4401be70a525d553877d3a4d3d1ff80f93. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:19:33Z), 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/QZHN72521417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a83254082109391a313cf005c74a2bb6b14fc9c3804ff5f9bc4f07a1fd75cdd. 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/QZHN72521419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaacde84618186721c2399422a0938f73d7b084878fb7862bfa90814d247ce59. 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/QZTB62577464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0e311a2db01929bb4d06862a3c01cd25949b0c9286963bc22b186c4f5a895b. 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/QZTB62577465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64920aaf04479e16770cd5de51ad7f12119e1eee9b47f5ccc5262895220ffd38. 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/QZTB62577466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626d64355f516ee13f07364acfe09f88411b99372e02b80b1153e3fb4ba42079. 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/QZTB62577467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6755591513fdb0811978be6c542d43b1866bb3e54c13c3d72513ce1bae5966e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTB62577468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4075cbba77e740dfdabec6a0c07ce8c3c573f684cf80f1ef234b641f5868cb96. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QZTB62577469.