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 0x4d537caf0f9887c4f06af6e34a351bf0a72267ddb59779d12c42c5f0f2c7e370. 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/db4baa2e-7803-46d6-87ac-10fb6ded4a62.json and https://artists.proofprofile.net/proofs/artist/db4baa2e-7803-46d6-87ac-10fb6ded4a62.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 0x9e229f84a1104e88ca5fd493eac480c5dca3a2727812328b089f2ddfaee78c34. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX4R52208461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2f06a06a868d35dbc6e0b95bf740d86eb9f5be1447bdf8513c67acd60e286f. 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/GX4R52208463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b7353aa06b4bc01ec027631e3fed0b379d86c32672a6439a0a82e8199d3515. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:28Z), 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/GX4R52208464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3584e4c7d2612ce0636151bc05187df3c0bf32442fb8425be51aba3dd6d06ee1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:27:08Z), 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/GBMA21963706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c36033fdfdb1d08f32e79b9ca40ee00731bbf71d3d1b56bd318da4f3dbf892b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:45Z), 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/GBMA21963707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb23e59910f461d9fb78c3e9097534b181aa0d003ccbe212fcbcc92809c2315. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:25:49Z), 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/GBMA21963708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33233b80907762e9dc92e1d49f5066fbc4d073c536088f722668d4f19dca03ac. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:00:48Z), 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/GBMA21963710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8057e0daae296769bf38918e697980e00652ebdb43ae56b57d0426ea1885c5. Chain 2 (Bitcoin): anchored in block 958355 (2026-07-17T03:11:50Z), 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/GBMA21963718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025d26337dfa234babbfe240689fbe6a1b91e7edbcc804d2a2632d78220acccb. 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/GBMA21963719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef1b52a67df25eab3d79c5bef2266efd6470d9421e5f2d62f5e82e958b231a7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBMA21963721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2f788e70811118eaaa8cc199b96c66cbca019d6618e895058cd564e572a1ab. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GBMA21963722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fe77c40f1e004c4323ebb14e4f4682ff8e401f17f8400eefdf828fb0b84348. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:51:16Z), 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/GX3Q92363144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3e2d4a952a4dd48ca50cd7204cea0650e46a1a78a8bcc8c6a3ee0e20fd3552. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX3Q92355163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcc2911587d291533cd119fe5e846da430b3c7e3ad52249eb8b6a4c8c542377. 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/GX3Q92328147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23793f98d97398e09b7e8ceba87aea1c4a0e2cc88513e50ca212d866ec2e5df. 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/GX3Q92355164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aebc4514dd16c809d2d06ab248632cbc37e6b1e772418cd3ea2f4f1984ae421. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBLFP2418019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0193dd895fb40e6128bf6e92cd4ced4ab9402c08624f47f7fe9b81e2225dc22. 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/GBMA22580294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89ba3b8815265dabd545ad803f0df78cc781508cd34d47289b883cd04a2a54a. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/GBMA22580295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29698dd6beb68f2ad14648184b604c096b8f2d050479f2b73992c2e27b4be2e. 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/GBMA22580296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358b837638d3678c319d433a6583b98272b34c0d16b78896ac0d35abb11b46cf. 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/GBMA22580297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7223ef430a85dba311bf063c9ec7f27cea2744a17eddde697626b772ad8be1e. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/GBMA22580298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d9e7dd6e4e73578f5dca4aa6131e5c3342f6b9bbcf712e88eb7742d7c0cb27. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBMA22580299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc026cb63e032b44a3050f535a47c43eadd94ad96cd1b5c2e276444d5bdc1ebf. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GBMA22580300.