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 0x5d1ffec6c22048e59972c55e25ab7c16f6b35bc66851fec265da5d3e15e783ff. 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/d66ee4ba-99e9-4fd9-9543-5084ac65e2ac.json and https://artists.proofprofile.net/proofs/artist/d66ee4ba-99e9-4fd9-9543-5084ac65e2ac.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 0x594b027732ffa0ade25fd01bec2a832a4a26046ea79774b7f8cc17ec5c72af96. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/ATEJ62200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb077c869afb5c348d8de1450a06b649c978b56682d1724695b60b63e09cdf71. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ATEJ62200076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3ee47287fad9d641c8cc0089fc66a39c27a44ebae1ddf6697e03f20140e8ab. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNJZ2345061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c4667a2c6b188af07acc843483783688163a2abd09423b388cb802e37343d1. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZTVM2356947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1a9f9fd527d21bc0b198cc69c27f33fb4533ae7c03cd024de24c98e09f9c5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZ5AB2476891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0b85cfaf224b5adf188c2b8b9235f4f568b45ca6c283df9b7093263ab71b53. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNJV2409078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a8e2e81298ef7856418c12ce6a1f9863feda4b5e78426117037d5cbd6b4043. 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/QZNJY2430288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c1a9f9fd527d21bc0b198cc69c27f33fb4533ae7c03cd024de24c98e09f9c5. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZ5AB2476891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8ca9c20346246991fe80be5a61803c6aeef72ce8e25df96f19dc3cfa3c7d23. 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/QZGLS2460640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e0b85cfaf224b5adf188c2b8b9235f4f568b45ca6c283df9b7093263ab71b53. 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/QZNJV2409078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d366809b634ccedd857d9e3c26c5571360196ceb0da1690c0efb392aa7d9c2. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZNJZ2460098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b6f4d82de8922162d65717ab35c89f8fd83c6bd584d70a638f6eec658ddb43. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QM6MZ2514603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3d62e941f875d93f3a7eb207358e9e06cee9a7277a83d40dd77dc26af96d2b. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/QM6N22592987.
BIG FAT MONSTA TRUCK (The lozeak and Big Softy remix)
WHITE TIGER (The Jasmine Thompson remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e664f6d72c5137ae14e872629b27adfdeea1aef4e943e2a1abd920e93bb2f8. 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/QMBZ92198443.