Kristal, meaning "crystal" in several languages, may refer to: Kristal (name), a given name and a surname KRISTAL Audio Engine, a digital audio editor The Kristal, a video game See also Kristal
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f4522a9f7b134430a003d0bf7f841d480c2385e75f9b43882e0c2ea7c313e5. Chain 2 (Bitcoin): anchored in block 953617 (2026-06-14T09:00:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bfdb92a-c804-4aef-9fa3-911c6e72fb7c.json and https://artists.proofprofile.net/proofs/artist/1bfdb92a-c804-4aef-9fa3-911c6e72fb7c.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8741e35fb22286ed58a27eaaf80a150bc8a7ef10b752a32c897a5a5233f3e75c. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USHM22007465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb230d8aa2f2d9e802d5f948f277e6ac6f826d16426a865c7259987b52dd85f9f. 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/USL4R2059988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aebd7773bff0e64258fcf4ba08ca89f441bc99f50c1911955926de29484288d. 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/USDY42138580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f279957a269565a253c42a354048beda00a5659dca09c24c45e8167f87df572. 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/USL4R2100792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e417360e8fa9eabcb5128a0012c96de99642bb4798d19690bd424335132737. 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/USHM22077731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305b538cea08f4fff97c3ffab302b000cd8076d4f57251cc67c1f0a90d5d8f65. 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/USL4R2100793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb50faaac6a4d7df016f457522731e453c70098e4dc8ac7603536d6110955ac. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T13:24:39Z), 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/ZZOPM2236877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5e15a72895146ea8b4dc8e239de8010d85e51817142c7cfda21e4cfdd709ce. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/ZZOPM2226057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e382fb47f01c36489e472d99256b86714149d4b4aae7368bb435d136f59553. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/BK4DA2203040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ab1a477bd4e4a6cde61d535ee46a559f8063e5fed6b49588884d75759dd310. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/BK4DA2303520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc7a143ab544726dc1146ad0ab2e4fb5077336e8a404e96420fdbed07739205. 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/BK4DA2407533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ca0b32271b5e4cf9813da1a9914bd55911aca368f911d86f734fc3f0ebfbff. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/BK4DA2463976.