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 0xd8cf60d158c4afe0bf9edff31e4e92ac0bdffa34005bc950014b4db5e81479db. 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/2ee577e4-6f85-4124-95b1-9cdbd689e4aa.json and https://artists.proofprofile.net/proofs/artist/2ee577e4-6f85-4124-95b1-9cdbd689e4aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Future (Q-BASE 2018 BKJN Soundtrack)
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 0x1fc7ef511a5f40eb2f6fdc1b271e910fcd76791b912fc67eba0780959a31318e. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-03T01:28:11Z), 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/NLH2L1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a63c61c9d947ed153aeb3244abff2e9a5db4b9c9af592711f6451492ad942cb. 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/NLE802200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab53a379c159f437fce1577d4b3575029b2cbf2bc2072c999bbe6ed5d60d67c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:05:29Z), 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/NLE802500230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a63c61c9d947ed153aeb3244abff2e9a5db4b9c9af592711f6451492ad942cb. 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/NLE802200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894b16ca87b7642ff6e99b97fb9b5178c89d55a959a5863f28148e0b4c652e8c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/NLE802300056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3b9a5e6470a90ee4498955041e4e60a2ddd37a3a47498082aa7821411c1bdaa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:18Z), 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/NLE802300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503bb3340332f8a9dd5dea5aa51558dbdad309d5319da0b54506f3b37303aa29. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/NLE802300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7d1eafeee8514b85cdf9ca5b6c8e81a93910183a40fa5725ec67888385ce78. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/NLE802500238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a56876c18f4bdef720853d8822b748005683c045cf8e415f2663f2c73e6e78. 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/NLE802400347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56491b0bcbb5b002156a7015a61c86467e1f6aa3addea912d89371e64dc66520. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/NLH2L2500269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9772bd0c13ef4d6f9b36de75e81a0faa2189678afec4c23f83b33c899ab08ae2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBLV61905203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98fe1eb08311e19682358a388112f51c5f02f410041b015097c81e8313adaf0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NLE802200097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fc7ef511a5f40eb2f6fdc1b271e910fcd76791b912fc67eba0780959a31318e. 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/NLH2L1900024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71ee979bf7caafbcd19d448e817713b24f497e17b542dfba6962bfaa5639887. 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/NLE801919007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a37d4501ea165c78ce91e05bdb639fb2eb428168b48381159e402f278b09162. 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/NLS161801343.
Masters Of Hardcore Chapter XL - Tournament Of Tyrants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1ca7e8abe2b4f3c8235bc88e67384b5b9f02873ba3440add7fa6e6e5566469. 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/FR0U91800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9772bd0c13ef4d6f9b36de75e81a0faa2189678afec4c23f83b33c899ab08ae2. 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/GBLV61905203.