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 0x86250c96e28b271c4b844158baddd84b4dce24f799682222cfa990087a36aaeb. Chain 2 (Bitcoin): anchored in block 953724 (2026-06-15T01:43:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8d9c8890-0fba-4e2f-9872-b77e9f991207.json and https://artists.proofprofile.net/proofs/artist/8d9c8890-0fba-4e2f-9872-b77e9f991207.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chillum Vol. 2 - The Ultimate Tribal Ambient Journey
Virtual Trance Vol. 3 - Solar Transmission
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 0x530879bce396e3fccebd6566dc431df0b7027ff8ec5327402c273d5060c27a5b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/USQY50917984.
Chillum Vol. 4 - The Ultimate Tribal Ambient Journey
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea8818f414a9243d2660360add5106c7ed78b8995b074e902bc6fd4667dd6c8. 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/USQY50925312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066e104d1279e0f9c17d391009060d15b49d9d248ea1366f380bc72024b54408. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USQY50917915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdca7e60f0f328064eaac9672f38d6099cb815c640a16fe2cc616265939f5fa6. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:12:43Z), 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/USQY50917916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3d09c8970cd36ebc18873269b3c404a98ca121eca7d4dd8e9d08a1f172009. 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/USQY50917917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf0972e245619044443819a15cc91ef6c8fd390b68edbaa07f8673dfcea9680. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:06:36Z), 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/USQY50917844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec1934f914a0747eb95a67319e0ffe88d18b235ff57c23a81c9320b36cb77e0. 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/USQY50917849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b6f0cdd39fddbc76b87fe9687e890943a7cd4b1f076d5564e5da0fd87c5c8d. 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/USQY50925241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea60907b173e78bfacd167edd01fd6758e154b08ff9cea8e688c436986b81970. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USQY51160075.
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