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 0x10b5f56d85c70349f4754ae2003b9e778637e6f2cad5cbef4a77b0326c56649a. 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/0c8abbe9-c212-43b6-81c1-40d793c11cb8.json and https://artists.proofprofile.net/proofs/artist/0c8abbe9-c212-43b6-81c1-40d793c11cb8.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 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/SE37J1503973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30297fb5d9b9e125c2e65705e47cc1a76c59f617fc71be0e0f7d86b03f647c6f. 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/SE5IB2299276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ff5ca38ca3550915b948f89acdd5f3bdb0ae33bbaca7377c5935d7b3fb3753. 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/SE5IB2337339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01241cb023b2bb2400d94f774b6c2c4779e6c1d9a0fecf578572266d9a8e87dc. 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/SE37J1504358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. 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/SE37J1503973.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE37J1503973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01241cb023b2bb2400d94f774b6c2c4779e6c1d9a0fecf578572266d9a8e87dc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SE37J1504358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01241cb023b2bb2400d94f774b6c2c4779e6c1d9a0fecf578572266d9a8e87dc. 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/SE37J1504358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. 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/SE37J1503973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01241cb023b2bb2400d94f774b6c2c4779e6c1d9a0fecf578572266d9a8e87dc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/SE37J1504358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE37J1503973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01241cb023b2bb2400d94f774b6c2c4779e6c1d9a0fecf578572266d9a8e87dc. 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/SE37J1504358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. 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/SE37J1503973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52840aa63fa322d4095834fe037ce5f60c6ace2fdee8b307d94a9d0257acdcc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE37J1503973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01241cb023b2bb2400d94f774b6c2c4779e6c1d9a0fecf578572266d9a8e87dc. 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/SE37J1504358.