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 0xc239eaae3979d2887ddbd3a4afb195cf51c0400bb1eba3abc043e4d788f77270. 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/8c0f948a-bcd3-4701-b391-e9ba753d6be6.json and https://artists.proofprofile.net/proofs/artist/8c0f948a-bcd3-4701-b391-e9ba753d6be6.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 0x978b57b1f78b981e63f37d2c39449061ecdb23f773bd988642ef57d0a09cb746. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5W32406094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e178ca8c4b4e426aefff56879bba0de4bdaadb988c5dcba82b7f6e1491df3a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE5W32405134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077e992ec2abc3f08bcea42f61d81ee3553d3338291976522616c655a91b5911. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5W32400426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224bfa724d3e55681aca3a9332103ec6299abcdb1cb11a8ef96f67b8c1a46cfc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5W32308797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a28d2671c655716a165f73895e3a29daf4f621d596e9c410abf31d4472539a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5W32307088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda721ee022b1f942be7a2b340fdedbdb3da027ffb8c72b72e7a5c75cfe65245b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5W32306506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ec6026446d124edeb8518927964db12d2e31ddb68a0b4eebcb62b169157804. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/SE5W32306021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1586917f7d314c08a69dd588661fa5c684329515123a136afd85f05c6a5c8c4d. 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/SE5W32305334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e759bc4b28d2ae240e94f6096f69a0eec907c276cda87191ec94be5fbe053df. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5W32300233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27747331aa9e611079bc0d0a53b8fa49a309bd7f020b5140c3e7ff8a4ef8dd9d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5W32294082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe61db7628fad549ae05f188fe54c20761b074aa38e3785874975cff194cbe0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5W32204398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96d4852eb4277c507e7b4e5197cecd5cfa6abb50fa38d03151db5d92874c6ea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5W32203867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c05d3a8360e90ee6f160f1020cf9d06965516b0d70200329b2e0b2fa05888e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE5W32203197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a11ea64b28bc486ec49dc399332aa48b374e68cacd627b994d4ac581a6f9c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE5W32202835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf18c4acb647969008ccf87820e7270c3526af9f44c31d562b2c1bd51573e03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5W32202435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x928d213fa71b4ac511a00097acfb19aee63a250473e0b9645146dd70f3c9d143. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5W32201914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b25aa33027486725730d1ab473d15ec94f802555cabcff61bde0d9ee8665399. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5W32201561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453afe0b426bf35047c52502750ce57d65e9eac8d0c65f8a956a5b5d4e752bbd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SE5W32103412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x185562838a4b02c4d17879c8f239f0e81bcbb24026e53bc896f02866cf1f36d1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE5W32103225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e3402611a04d44933fc502e61c820154dc818df5a7cbde76f0bb1ec0823ef8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/SE5W32102634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14711526c9ba73789012c683587cbe6c79d9092dd1712c325dfe148f13a81786. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SE5W32101992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db035dc0aa06f2fd71ec20810051e9fd2e9f54d000be2d3171d43ac8aca26ea. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5W32101957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ecc0c43bec6b0ead930d1067f951edd9f39d1d9bddf57112fbe30c86035280. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SE5W32101765.