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 0xef587b3c98acf77fe19c79d466ba89e3ab17902dc65cc088756672b5dfffb426. 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/da41bd97-b447-409d-a50b-bf0080254a85.json and https://artists.proofprofile.net/proofs/artist/da41bd97-b447-409d-a50b-bf0080254a85.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 0x87ab03ae2d8048d955a33bacc604adfc0fca54cbee18f8cf6eff9938922dcdca. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/IDB772100305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982876fb5e2722d273b3086b58a14968fd463800401c040eeadc5d866d47eaeb. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/IDB772100411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309add857f584f44e7aff40e8c7caaef0bbfa2b2d0d10a559bc040a1f70042b7. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/IDB772100437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3274a126f07d1d06966ae119b22e18e4ba10992ac4ab661c4e994d7014921886. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:58:01Z), 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/FRX872135039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe14cd24819cb568de075a6844ab73ff000ac181937446968addd774c598a6ce4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/IDC302111077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24f5e85d688e112f6e0facbc04662293153c744666ebff8587ec4425c4a6a8ce. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:09:29Z), 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/IDC302111324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc9c8ee413cbce04f658c0a6e8133dd054decccd63e995db1ca08a6f82ed6ff. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IDC302111362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab81e24fd8bb10e083f183b500b59916898668b79bf45a64ddbfe1042b2557a. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:25Z), 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/IDC302111378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9da5e7ca8b2c3c1aaa5f73249143f3369662c9b8b795a55f5163488bd39fe21. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:06:54Z), 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/IDC302111012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92405b4a199e9e89472b6d2a5d871581e5c8b6fd6a3e44226c405a5d7df414ec. 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/IDC302112700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4967b0190745a3a0207e3020aa1e37ab83059310c33056cff83fe82620da2f8. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDC302113348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19150c0673221fdecf88dfb92a11db2ddf428edb636766a0bcbe5084645c8ff0. 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/GBLPF6756784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f74bafbe891a9a5c91309d12faf5f3104b1e32c03ed8a8779cd259974435525. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/IDC302113475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10209effc61ffdf0c7bb631e0f7d23e076b1f9968c8ca66ab68379d14bf49acf. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/IDC302111606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d52930c91acfdb60e59710f6eb44a382d71adaecfd982dfcefceff8a07f928d. 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/IDC302112086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06aee5a03ee0af5bfc66aa3fb1f1fd93ab6253fea1c86894be6e55f3eab80b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/IDC302111709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e774359a52687ffd009790f772964c72d90d6f85a810fbbf00282a3138ce3b6. 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/IDC302111512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13200e9b205910b8f5be4108713e68c3170215085dba0490909af30469940c9f. 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/IDC302113663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638ea431ecf0b2a8cf0ff51006c90a4635a03e639aeffe1addfed48f1208033b. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/IDC302113749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fec31239736a97234dcedb5fc230c7821b8a141e04192162a5005096e04880. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:09:40Z), 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/IDC302112638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14786996b655a645d61d5526f9f8a92109367e92483461f139f9d380ed86e0ba. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/IDC302113826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55bd184bfcf1e350de5f5095284f43077efe2d9637d05be5aa7b9d6176cbe5e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IDC302111144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecb29a38ed329997d1c0a7efe7ed02e8d594204460c41995c9a7f821e55b845. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:18:27Z), 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/IDC302113896.