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 0xc1464f7501a3c978e4d923a0c8c468cefe48e02790c55167051925b44d503a4a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33354593-4f13-446e-8bf4-31cc5c984f68.json and https://artists.proofprofile.net/proofs/artist/33354593-4f13-446e-8bf4-31cc5c984f68.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 0x9791eb2081cd53a939be8a45a6c7456749754e928ab16610ddaaa080c5d4e019. 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/JPPO01615305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c06b04d334178effed59a7c54982c5e55c8da3ddc354d2eec83d628a9f989e. 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/JPZ921800929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f9c365ef8c63646bc7bf234588cf3900f4aabb6ea755cff957278aa8505833. 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/JPZ921800930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ce442db550c7af72cdc1699271335d849b083da41d12228c157eabefe36e1. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPZ921800931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c06b04d334178effed59a7c54982c5e55c8da3ddc354d2eec83d628a9f989e. 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/JPZ921800929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f9c365ef8c63646bc7bf234588cf3900f4aabb6ea755cff957278aa8505833. 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/JPZ921800930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337ce442db550c7af72cdc1699271335d849b083da41d12228c157eabefe36e1. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/JPZ921800931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aba7ae41e8dacfdd049801ad65eca4edc37e9e6f81ebabda73a1865c4c103e8. 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/JPJ591801273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23acae6d952430e484e30e7980803bf1595e4c7f8b2ae5c56b8ee0ca8ed57c3. 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/JPZ921705235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4911dc265d9f1a703dc005ccf02655213a06ae92b46dca9bbc2793cda053c738. 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/JPZ921813773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8349bf7ad8ef6362b050382eca560591a4056d59f0f87d34a9ea56b0f1446506. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPZ921813774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4982040d5fc36d7953b97c159f53cbf4a5c038980e001f2082825140b5159740. 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/JPZ921813775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7697444697e517f39a5d34160c33b606c5f0083f1b8880984293a4b753c5dd. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/JPZ921813778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f70162151549e5e1605e2e0eeb7b26e9e784b8e15eb40d72978c9f49a826f. 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/JPTK01906690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ce1698896b4b78f85b4b77aa7dc5cf8b763e84729614a5aa7012742a3ce75. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPTK01906710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68f70162151549e5e1605e2e0eeb7b26e9e784b8e15eb40d72978c9f49a826f. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPTK01906690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x515090c460b41184e10502d3b52eef2fc57dab8d27cb433c8241e1489af9f7e1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:38Z), 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/JPTK01906700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ce1698896b4b78f85b4b77aa7dc5cf8b763e84729614a5aa7012742a3ce75. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPTK01906710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf986abb23df119a6e66ec51a60b429c7ab3fc2a2dc5e584aebb4ca18a75a3ec. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:42Z), 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/JPTK01906750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a593f9d56d150067464d964961361ab646fb9d31e817bd5a6918161f6f2cfb8. 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/JPTK01906780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b78ce361397964e5c21fc1d1a1e0625b20bd2067679aea1f9ebefda07c11103. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:35:26Z), 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/JPTK02008230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b78ce361397964e5c21fc1d1a1e0625b20bd2067679aea1f9ebefda07c11103. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JPTK02008230.