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 0xfcf366ec8eba1bb19fa16bbea6b313c1bbc59e0940c322ec3a7eb23795a8890a. 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/7f9ed906-9114-4164-a5c3-f42922ecd7b2.json and https://artists.proofprofile.net/proofs/artist/7f9ed906-9114-4164-a5c3-f42922ecd7b2.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 0xdd1e06bc23009b699a1ff9271ae5b5193d6004a6ff22db48750aa9451297c3b9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BRBHM0200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8838e1adf5dc40a62987fd66eefe7130e1af46469fa50da09d4a0ccf12c270. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/BRBHM0200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbe541d7a575b03838d9355f3a271f890853f0f5b6b0fcaf57520dbd024942d. 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/USCGJ1547612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1985b46a48b0ad77bae579bd4f7fe767fea8c080df55c213d5c35023002ae5dd. 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/USCGJ1547613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99281929a8328f442abb283e6a1c7e41b0acea04057a13afbe57c0f4336009f5. 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/USCGJ1547616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59f389b9da77ecdc9996236d95470268110d06112efdf1d531d3a5eb13a91a52. 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/USCGJ1547617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f8a50544a8bc33997801f5987536a51d291e053f856b339b0bc32e4f71c9c5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/USCGJ1547619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccec6bcef4f9fbbf5a998063a4488b2725a42306b44393baf50934091cd62e08. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USDY41504240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c7ff9f446d28d8b06ff5ae667dd980f6ac69a55938701cf0989c257ff9de28. 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/USDY41504241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41c0dccbd5c0ccdf3a628f76091e8e2c4488a3c7c3b2c8339b1238d1f2337fb. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/USDY41504242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f33822e11f61afb7c73b10464fa498cc36502419bf6a6d2885f655ac3043c79. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USDY41504243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd918851f3855ad867f8ab03a03ef54bdc5496098ca46bc81f30eaf2bd4045d59. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/USDY41504244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07717bd0b2a950871b99231477344492a145f331ef814887a37340b69b0cff9e. 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/USDY41504245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7940fad6d17a40ad72bf0daa92b59bbbdd539e82b992cec964ae349b9c7e79b2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BXFTR1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafa07d745c33e3067d7cc51f4473709865fd66de75fcfa93fa899e752474168. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/BXFTR1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75955815cda4586e9a433d5d87f84d61545904c6a304639520a1584b326a91cb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:33:01Z), 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/BXFTR1300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc1811fc5437994bee1c012f82369743f0f36a519cad9fd3f3a37f38c8ce80b. 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/BXFTR1300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bed242bbe3006575ae87e42b6ad68d4f897fe4a4e7ced9e294e1e2d637a8fcb. 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/BRG2G1600005.