1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5808de78639b566f6dd17811d7824ca09e6a06ebbed348bc50fae29ef9948f85. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08b55b32-23da-4afd-a563-a33be1ea5a9c.json and https://artists.proofprofile.net/proofs/artist/08b55b32-23da-4afd-a563-a33be1ea5a9c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 → block OTSBitcoinBlock must exist at that height 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 0xfb1f81a3b2763bc5ef8cfe3f5cabc0f4a2242112d215281267493b5c5ee882ab. 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/FR10S2274709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42a2132a29b053381daa0dfb6e560750cdbf2fa96f7754ec96923e912951b9af. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:52:47Z), 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/DEPI82307232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0870f4a96aba399382d11fea1c0d3476c7597e1619fdeaf03351a772193b53. 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/DEPI82454058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c25a51cf0f2d720a9c9f1598eefac6bcd9dbf61a07e03c9479c4ac7cb3d77b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEPI82454060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983c71d4bdb03d8938f76d04de5225c7648ad6f2cedf46e8311f7157e1d5b47f. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/DEPI82535028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4a30b56500dd4520aec24e096288e921880c6e5b345cb00a124415af4e20b1. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/DEPI82535027.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7684cb960970b3dbf7c26d571f72e7879d08cf38c4a8530d117f6cd0007a9f4a. 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/BEN582001145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2a9f153bba7f75b34246ebc6b5564242f588c60ec855efd3fb9e626d91a76e. 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/DEPI82407307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x653ace293ed8600d688a6d98b14846d88a67c95e33fce18d9fd7783ee45d0a23. 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/FRX872102160.