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 0xef2612750f1eaf43f7d66f803079928cf5e71b1c1efa22235980f16b47621ea6. 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/d17795a5-9706-4c9e-b508-27f2811d6fca.json and https://artists.proofprofile.net/proofs/artist/d17795a5-9706-4c9e-b508-27f2811d6fca.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 0x07208c2f3baee8dad9e9c08249518a3c9cf05c4a9d4514091f8ed9e70afd2f26. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM4TW1919531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d451e5f0855857385f116f31e466fc88d6fd33b200f703384bea6c2e4c5bf52. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:43:17Z), 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/QM4TW1919532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ed1fa5da52628ea5d82c516cfdc131f50260b7d9f08e7a419dfa1ef179df5b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QM4TW1919534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc84b1ee5b536e07babacc6ded3e7edc094269af2bc4b3f18842bb1f1677ba49. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QM4TW1919536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc4e972cb5436aba8470eb73a3188a836e72a5666cdef6b72d90296e808bf6d6. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM4TW1919537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece58bdd5ab83990894945a4e0a9d3db2148118b938703c6c198cff8d1a600cb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW1919538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe682582e94145ad708a64bd3d8251f5951a64f33d2417ab026e32a7afe90e34. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QM4TW1919539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f955aba3199f87125f40e1a7d2a81f7a0eaf902c7c951379c64e4a52ea142cf. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/QM4TW1919540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db507f0698356801658f877019ca70231206c321e85ba1334def855a0978280. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QM4TW1919542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2089b33566fdde37f7eeff7f35b3702d9a0ad28817f3a8b41d8b44d88e2d95fc. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QM6N21966681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e97a4c624a0a9a11065548d37b3f113b28e655f894753525cae6df90826415b. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QMFME1968200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbe4468a7fc7dcc7649325bad0f5adbf654ba258f94844a5ba37918e64bc437. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QMFME1968201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9527a3db534f8d382e6dc9fe80b95fe882a2e2298530c146c1c3bfdaad7aad60. 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/QMFME1968203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef260c60446b5c1608fdf8cee4089359da06c8e9b58463a61e89afd694c47640. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QMFME1968206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06fc1dd5fa3c6a5ebc64dc019a89906d995a2937fe3c04eff38d6d8c67c65fb. 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/GRSTY2100124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06fb2074f6969132516fab0e6a796dcb3efbbaec173a9c145664ca986c825614. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/GRSTY2100831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ce095a4789a935fbaf33f95f43c33a7b119b6538da2992144afdec31fe5b95. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GRSTY2101018.