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 0xe0d80dc8e7e6fc23c4034324c057e2797864871fabf472484b57dcdfe3f0dda5. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4e937c9-df54-438e-ada0-80cc0d7ba229.json and https://artists.proofprofile.net/proofs/artist/a4e937c9-df54-438e-ada0-80cc0d7ba229.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 0x7054116859d64b7c1facf639e78af5ca3f689d6469a8794304fa5f76c4ddf5e0. 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/BR4QI2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b440925cb9511766fa4a806cdade07f5353f363dd77373977abb45b6e4073c7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRIKV1700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbebd7e94264de94aeb71dd25326764ba7690cc0e34ef592868f80735b91ffe62. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRIKV1700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208d8cd275d65f517eaaec3153868504c8a094cdfdd70c30e7c87bb45df26145. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BRIKV1700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1fb4ca10c011463f5a485142b1a9ad4aec1a58ffb7eb5e5f7558ad02db61b0. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BRIKV1700019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797a78e0e7b545ff9f975df8f16bd3b6934494e7085763266c2220ce78d1d6ec. 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/BRIKV1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63aa0f540ced264368022af03c67648afcdee50d1b30fcb7bbf65bcc74e41991. 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/BRIKV1700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b73f55542db0f71524fc41e2fe8a737f18c0444c67b427feaf56c3c314b6393. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BRIKV1700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ce36fe15d33c446adc98f7bf9f8ee7813e7bbc57aaf8174217695f01d372f3. 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/BRIKV1700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8409329b2bfeed9569671fb576951f197db4167d68199274d7bb214f9b2062. 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/BXGUO2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfe5b0e6d779b8503dc97b861756b66acdf228212fa7f434cf5d99b828b7240. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXGUO2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10757de595b4913ccaac4940af08809367e6794a59e171948d477a680a283f30. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXGUO2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383ca67a1b2de4e72470cb3a7e297cf126d5821e611c7ac90f4af325d209f064. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/BXGUO2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0389d973ffa996cded55f43af453792e690b15e56f6f011896c02f9dc09b3284. 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/BXGUO2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe711dcf3c1388d5891ec5209155ed1cc776e017b48bd40774982c12e646024de. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXGUO2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d444f8697444f9a740e588014229bf4a2cb642d4e38d32b8c197e5ba08c56b. 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/BXMUD2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b6031d97e9ff091304a922b19a4a7ecbbe42ad6d6ab4511ec52691a83916a1. 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/BCF6F2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4e480d0095d399efc81b2df4dd44a6a128f3f34e50a7087b4dee4260a2f590. 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/BCOYG2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50852a1582589972a093c68eb82146c0afa26945011bb953feb2f2a8a7044da1. 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/BREQP1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d392c0106a853e51b445ae7fc9bf9c1dcb980c85febc458f3dd671931a1d9b. 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/BXFPN1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec05cb2e9ca3bbeecbb6d324cfa572e3b5a8ce98d74000757a6728d8759a5ef. 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/BRIKV1600001.
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