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 0xb78baef0fec4940d57d02c804730aae0d715ecaeefb56ccebff433a95d454340. 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/8839ac41-8f64-4dbb-89f9-c3b85fb080c6.json and https://artists.proofprofile.net/proofs/artist/8839ac41-8f64-4dbb-89f9-c3b85fb080c6.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 0x9e60162ca01fb8c19c2479f03ba6bd20e136ca7c0b2b5329bac1fa043c4a301f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBLFP2464305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5efcfa3e8f9dba222e5029597722879c1c33e6d745987a215c6a2a455942f161. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/GBLFP2464306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7931b3e823c1731b4be8ff86ccdfcb6619dcb05d4d05efa2408e863ff75f5cc. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBLFP2464307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5825943118f039fc781ffc1536fc2eee07898518e112965a4ad3b27655438f43. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBLFP2464308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd28e783df0637ba7e5e24968c3720caccc8e798a057ed5df97e8621dfa9c2e. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/GBLFP2464310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e611d7417ac06d4fbada863523220d51f98857e9de9fa42a32292122532bfd. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBLFP2464315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b80c01bc57e1d3ab43015420c2c25ed77d4f4a7955d081aea8db80e38f2c75. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/UKXN22405378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1310c1d9b0d5ef869bfae82f6386f2efb98f66b1b374ae1860960e68fc37b605. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:01:14Z), 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/UKXN22405379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171bc505603dc5bf8677179fb24854e361c82a200268e6e4143d742af630960a. 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/UKXN22405380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a4569d3aa7a20a596aeb2d3fb8e043016555d6c0eb91f215431582c94f0135. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:25:34Z), 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/UKXN22405381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6fcec60c93092f9922b6761018edbf33ebea9d19bd5f36abbfaf4e8f7ab7db. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/UKXN22405382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55ece11ff7512753c9a7719ab02359ebe643c346e86f59e74573dde60389a5b. 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/UKXN22405383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70e08784fcb88346da3c5d1363588b6fd214b179470751eecc0a2d8417ed3323. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/UKXN22405384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1069b7c09bdb7490d713562a93bbc40dc2cae3619de1202b6f531bedae4c9747. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:45:12Z), 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/UKXN22405385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8a86e27a3bc37ef0e6fb91d28dd071ee0abe72c0614f1dc6245d562665cabf. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/UKXN22405386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2a00cf9c34ed0bcb4928c2a2827be3c2d7bf739cf91e93ccbb929af2dd7114. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:22:41Z), 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/UKXN22405387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd091482631177e8b1966a58eaf8911a397d9f14088761bff7887e02034256e6f. 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/UKXN22405388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517bdbe9f29a8a1db5c8d637676347602d4e1452dbeb78046bb185de38de6f7b. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/UKXN22405389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c300c3478b5e5016f2969bda180a939b7d4333d71698aac03eb7d5d8b93a76. 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/UKXN22405390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15779e0840c3c64fa66020d017578d47567a17efc1a1b90b8200342aea00d5d3. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/UKXN22405391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fb7007dddc726b61268ee08e7a0dd1024d325656893b2e8298b023a8529716. 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/UKXN22405392.