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 0xe0a6a7f3298cf85095afc52367b2a778fc6f2c85c8e574ccea4e46c0794840ac. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5aec7703-a678-44f8-a06e-2f9c8b67c58b.json and https://artists.proofprofile.net/proofs/artist/5aec7703-a678-44f8-a06e-2f9c8b67c58b.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 0x4cd40bfd2e2fefc2a8a186c3d3063e9ffa735a1fc9d1621318d062322bb71b1e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBKQU2135395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109a824551eb6361062e93fa14199fd5ac745a9d0807a9d39c96fdc03f287425. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBKQU2152620.
Revival (Official Timeless Festival 2021 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8514dbd2e027c1edb6b81faea9a591b7d3b1c072184ad4e7f87ff161130b71e9. 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/GBKQU2185194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8925b0763b68223a2a7768edff5ceb7c2d18853cbc728e3b0bd063cc1f117189. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GBLV62100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66317cf56a02f6ce15a3a779af9db49521409278fc7ac4e4d7950d6bf9c5d146. 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/NLS762100483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bbd39155c8d16524d60082e9a33cfa2e7019fe39d64174d66cdb35c89f51731. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GBKQU2227518.
Freedom Mode (Official So W'Happy Festival 2022 Anthem)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ba4b40dde0f7319adababecac8bd226258b60a1b1afd7b0a83b2ed91415dba. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBKQU2291078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd95c7ddef4f6bcd0ec1779f62e40589d6bb57fd394809ba3611e4035249585d. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBLV62202541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6819414d088c0a591b0a1dd1d6ad83a3fc21dd00821faf0f1a8442328ab533. 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/GBKQU2301814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c61e6506d1a79716d214f8f1259a0eb6db448742b07a8daf67532dc7d0e9688. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLH2L2300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c4c177f941e18d6067605f27540f401082b059e3773edc8585da8d89c530f9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLH2L2300268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7b6d4d22ef05265fb3781c62f98fcf4573edda14d6d69e44dc091f7f40ad84. 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/NLH2L2400173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9866ce6bb768f41e6380902075487ada023b00633ffbc025fb5f26ce3495dbd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLH2L2400359.
Drop That Beat (So W'Happy Festival 2025 Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5534bb75727062f628f56f1c5f2c1a437d0bff5aba09b564fba069c9f6eee21b. 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/QZZ772598488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b60f6f3c0b4d635170a334af4f8de5265a8b2f3a8e3edf6da18182da784169. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:17:47Z), 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/QZZ7N2528834.