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 0x0c6128632936645eeb47708a77ee5e2541ec047e1a45ba558b394b2809434558. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bb86fca0-653f-4906-a0d4-03e2d18ebfe5.json and https://artists.proofprofile.net/proofs/artist/bb86fca0-653f-4906-a0d4-03e2d18ebfe5.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 0xa02b544c84822ac545f6072c050ac5ffda614232ccf50e6703ecb77ad800c1ef. 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/NL1MT1900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d552bbdce0b87b894709e5476cb74818cebff82224c792b7613c523e99ddcb. 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/NL1MT1900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c53ce5b5c18ee2a0069b7a476b525dbb7bbf27d176a4fa605f549b8f3b6bfc1. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/NL1MT1900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa02b544c84822ac545f6072c050ac5ffda614232ccf50e6703ecb77ad800c1ef. 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/NL1MT1900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b13bcadaf38b99dc584de12b672af744c857c1487c19d9e6efa92de70e4f7c. Chain 2 (Bitcoin): anchored in block 958816 (2026-07-20T03:51:05Z), 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/QMDA62202405.
Out Of House (Nathan Melja Glaciers Mix)
Liquid (Sacred Grove Liquidation Mix) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6e9c3474f40ec8928c88d172083f0e784ccc2bf3cd9fa0afdc8f3011d04793. 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/FRPZ92424060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe020e411405e54c456343672ad7bb0afbb62b48e98a2f959493ed7cb0f0794c7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRPZ92520030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602e7e5dff2907529093b66c747c8144fb2fab708efdf75f4d13cfe2cc185d3e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/FRR642500814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3eba1418985919a5a6d9ab12846a409b57251436cdaf4608453edc6bf26f2db. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/FRR642500906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca91d6526a003d9270bb1eacf984c9aab47afc69ddf0a478506ebdf59672942. 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/FRR642500908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891f982c560d3ce037c770d09981b4005aa821772a2c394ce3e8db6c24613e2d. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/FRR642500909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac15cb6e1104ba603a9e2b87864079a7e5dc4dea797f10084d54d10bf07fbf4. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/FRR642500911.