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 0x641f85ae8850e9e0e84b3e61dea158b39a90842faa09397f29b95c260ae66b60. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e375775-2d58-4a53-a343-ed8da313eca9.json and https://artists.proofprofile.net/proofs/artist/3e375775-2d58-4a53-a343-ed8da313eca9.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 0xfea0b69d11ed28e1e04d18247ad5f4c94d09f8258869f4c1971d606e4c0eb108. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/USL4R2421149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1058af0f2cb3dbb2cce0403978b1cb1f7e90649b2c2adb6b5fe0bb906c81d15. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/CZA162454160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7ffdb535cd3d97ceedf419d31b1a54db7b529b61024320fe9d1b721d15084d. 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/USCGH2576600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ece88856b76eedf99269fd523ab44458c4e4e56e27ee0a70d3311e9dae51702. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:48:24Z), 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/USHM82547899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7cb6aa589d91e0a82485bf74dceb93f22be84008e39b6f312910313b3a154e. 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/USHM82547902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e66674fd32a1d8b9d2a9ab6d469b4f18a14191b67f0cd77aba4cc2549c92a53. 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/USHM82547903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93198be4cb629e2b9ab2b805740ba54b8694e2b9f776ca3ccdc828d0feb22c39. 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/USHM82547904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f98e3a8e692abc35d379cdb91e138c67fb28ba09f617c2db8954d3bf151f66. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USHM82547905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c40b4ccf6cb1e0dc277176e10c0cfa9c847b8174b13cada6990f37ad38f032. 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/USHM82547906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a141c423d092959ecc08bcbdbcd25eef76766c47e9adb8a8f24d3285f63a09. 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/USHM82547907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40a55b7f0f854f676321900cea0642632af3e5b7f0f787ab1d41c572327056d. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/USHM82547908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f7280e5d4ddfa38187fbd2b29cce1c9845003932f63833885f6760211d3261. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:39:03Z), 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/USHM82547909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35537d752614db64b3d5623e48dbe4f95522d79c0f719a402a646be45c8143c. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USHM82547912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7339aef7d551dbc963fd8f9401cf4d9fb27e99937c9a2aa9e0ca17f5b4d4f077. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/USHM82547913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0010a9fd9113f47805410473789ccf4e8084fb39f5656920f1670d88ff3b68a0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:21:32Z), 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/CZA162552588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ff88fa0fd51ddad39094c2e4bab174e6a2ae2b064b0665520bd9cd9b8ef4c9. 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/CZA162552589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aad2a85836035f1ddef36103574e26c16b28755ade546bd86b15ef51b185588. 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/CZA162552590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e804545347fd47dfdebfc1551b718878042cea47ce848775538335e2543c27. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZA162552591.