1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xd2d4a6b33cd997283ebb0dc98b7290ab30d7b53e3e16f579016dc2e7ecd0a74f. 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/b30df2c5-a914-42e7-90ed-ad7b7185720e.json and https://artists.proofprofile.net/proofs/artist/b30df2c5-a914-42e7-90ed-ad7b7185720e.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 → block OTSBitcoinBlock must exist at that height 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 0x2d8857b3f8d85dc692566864936307f31f873bb20bd5f8cc305e49294de6713a. 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/DEPI81702106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d87b1ff68136ac0f55fd22c976e262e4864e1ea144d63045526b32ea1dca2e. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/DEPI81702107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10bbe9a24767674aeb5a68e999e64a89ad5756e7b7e82c2275f2cf012966ea5. 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/DEPI81903228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10bbe9a24767674aeb5a68e999e64a89ad5756e7b7e82c2275f2cf012966ea5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEPI81903228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cec7aa2bb6191b4987ea07bc20892426611c213d9f51e595ac48d538a4efa0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEPI82008765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cec7aa2bb6191b4987ea07bc20892426611c213d9f51e595ac48d538a4efa0. 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/DEPI82008765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c95de01eedc862729441fc371d7b9849a71383ff361764b09b4115025b20268. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEPI82008770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c95de01eedc862729441fc371d7b9849a71383ff361764b09b4115025b20268. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DEPI82008770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e04583b2431d72732b19c32d3ea17d328557556222bf5091202be4e03cb53bf. 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/DEPI82008767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3338153fe3d8ae5b016b5ec93c73949a51319d8d1bca212d078443f059d6ef3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEPI82008766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbf8c4790b1da22083b41c803d2006ca63236052fd865ca99d70d8acf9b60e5. 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/DEZC62385829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74dbf7397f1e8e437635bf87d22cd0d12ac9e5fc0ca771d424242490d950d9fb. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEPI82412572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf38d2e6bed087a7550a00e14c440f1596174e2631e96c25db9f87c1d43ee27d. 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/DEPI82440477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9585323b814f05c3623a5d1fc3a949da49cbaa3128c7ab2822847a94705d125. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEPI82431455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d69f9bb8bdbfab77ef16c0e78c85bb50f9802e09d83da41fbb7738958ea85c2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEPI82440479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f63309504d0e20b2e7d5f5eef9de08bde8ebfd2be09b62333efe64176f5fb8. 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/DEZC62357594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b430e337868afc1a1fddc095aa9b70a51b351f97e8de6f589ea9916ee459740. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/DEPI82440486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7012ea959a7d426f166d6efece55017c3f683bc8b31a035a2f417e5d2265e2a3. 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/PLD641900026.