Complex commonly refers to: Complexity, the behaviour of a system whose components interact in multiple ways so possible interactions are difficult to describe Complex system, a system composed of
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 0xb3af542d226000bcfde81a4058e5d9a910588c9d62f0183bb0f528d6bf58f6fa. 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/18c9f683-4004-431c-bb7b-5a1ac94e6123.json and https://artists.proofprofile.net/proofs/artist/18c9f683-4004-431c-bb7b-5a1ac94e6123.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 0xa10fa0f71061a3ce921e64721e12a4b2f77ef2e63a6519a43bbaa03deda643c4. 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/GX3Q92094837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc241e82071ca4f4739149999211ac33c4bda6ed387e05b63d33698f41bef2e6. 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/GBLFP2046485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d24f11cb8c37d6e512a1016423c0be856b284ae569e18c2f99063ea3856cb9. 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/GB8KE2203521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36aed5d71b145e23341ef1ec7b5f918d05f821eaf10c5dbc16845e8553e0b93. 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/GB8KE1958634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d24f11cb8c37d6e512a1016423c0be856b284ae569e18c2f99063ea3856cb9. 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/GB8KE2203521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde00d696d5409cd60b2055d7518453b01923afdf7137c56abd0734ec785f4fc2. 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/QZFZ62136332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7db4ef38fa98d58d3c2b3a84c07b1de08ba6c477b85b1e420e9d668666bfe7d. 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/QZFZ62136333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e435718b2e8dcae08d617de24554b979b8604d7b176539a47d780999e0d53f. 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/QZFZ62136334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8904d7330c7b4cd75979ac73a7b3e26f33e5725ac52d5f4c52d2b4a02e1486. 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/QZFZ62136335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05b367f4309b109ee059455c918d12b80e27d1dc8d900530dbc639387864292. 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/QZFZ62136336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d3607e41d4cec24a29143385b8b4fbe27da2d957a44da3ef4710fe12a99b4c. 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/QZFZ62136337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994d9ff7c25c593e108998125f90a79c145dd36d50e7edd86a6b0a956f765f45. 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/QZ8252049071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd844b605f1e50baa1e93e1bb942e430f920ebeed40765e236dd3290a085f8fa6. 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/QZ8252049072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc241e82071ca4f4739149999211ac33c4bda6ed387e05b63d33698f41bef2e6. 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/GBLFP2046485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10fa0f71061a3ce921e64721e12a4b2f77ef2e63a6519a43bbaa03deda643c4. 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/GX3Q92094837.