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 0xe9d640ca6e916330b5574de8176cfc27daf8437b3dd3e8d27d6462024fcf3e1c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e4bc17c-c3e0-4774-9213-786f42a2a31a.json and https://artists.proofprofile.net/proofs/artist/8e4bc17c-c3e0-4774-9213-786f42a2a31a.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 0xbe20adbe3e1701c14a3f845d4040795363e7406965d18f57a102eae03f0ade6d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GMBA21464232.
Beating Retreat 2014 - Volume 3 (Finale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a144984d07cd6f1b3de9f009a99c56d2ec2084650225b2a550d2943fa053e25. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GMBA21463929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14454d43461e2d50497ed68328a862100f3fe46f9ae0c58f58478aa3d699a789. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T02:24:33Z), 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/GMBA21463932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd691a902d6962d54508eea35c2ffcbce66b3d49c589ff897b21a4226a5e0b6a4. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBLFP1504425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7446bd82004a2befcbb299149852f9e49770852e44c52818c385f751157673. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:48:17Z), 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/GBLFP1504433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d2a5eb9d251c6a6087bcfebf6f40abb5da5742c92bc05769533a17d8529eb2. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/GBLFP1535033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d34ceb784ab566196c6053fd945239b2d7db87a815160be6b626f9df0c4f46e. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBLFP1535035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d04dac54c2e13e474040af4c9aa562dca28dfe4d9c41da1235a2717b8f4f571. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GBLFP1535044.
Mountbatten Festival of Music Unreleased
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658f1ef224f2ef77b4b3d9917f48acd55c641cac5f26977392008010f7c6f349. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/GBLFP1573247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f741738442021fdd12b0825e87eb28a829154f199eedfc300e4dffc52ab3561. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:09:30Z), 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/GBLFP1641519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c0b44554a3bbe66e747e604bb84207b5d7bb6c2c4ae7ae6d368f6fb83e7f89. 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/GBLFP1641508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdeda777030d7bfffa4efe5c041c83ce0bda8e77befe33ae91de169d9e2c56b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBLFP1746892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05f10217dd242e0e79456142033e68da0cfe712e5be1ec1870561c884281b99. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBLFP1746883.