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 0xbd1405484f042b46d6bf361d13ab645fb59c7ca8b77931e349c5b3483acda488. Chain 2 (Bitcoin): anchored in block 954742 (2026-06-21T20:46:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff772189-b178-4536-af68-fa1e413817c2.json and https://artists.proofprofile.net/proofs/artist/ff772189-b178-4536-af68-fa1e413817c2.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 0x98ce0394386314a8be0a37ad427574cef759b8b380ffd29522cfdaefa4ff084a. 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/NLS762200547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376f5a3286907a50188a7651d339a77acb3405061aa86710094b343a06d89fb6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLE802300490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873161f4478158f91ded5228b8e7203d2a50a90c2dac5fdcac8c402ba311ceda. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/NLE802300495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb91a065a6a75e251a2a1c5b625cdf1052beac4db4b94787f05223eb902c6ed5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLE802300496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf9652c75c43e34e918ccb09d4a3ad937347fa6f4463e80b05163c3ee8d9680. 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/NLE802300364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9716c7cf6b7e15c5db3c02ac7e4c7575188031430cd5dd4c465cacc1bdfbedeb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLE802300105.
Heavy Hardstyle 2023 - Hard Hitting Rave Sounds
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb895515d6832b701d471831103205b07e3e10644b17c10e27aac145263d78b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKQU2337736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274fd1739d900de4887973a0e60dafe99a52323ff7210c7451582bb3116abce6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLDD62200329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690320e83b55aa0387a70892e804209d0263583e9d9803cf5f11ae4a1314155c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZS652253584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf07346d0b3d508994d692fd9f449a067c08621cb4568e091353a393ff73a8bf. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2220424.
How To Train Your Dragon - Hardstyle Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56ba80f44b774abdbfbf383709972bf524ac82bd26aed77867e1253548dfe75. 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/GBKQU2340717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd154110d012d2301f32f959981832d1b39c24c1ead541f5b7ead712ebe29d735. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEA312107005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793605e74e52b14481d65e9b880dd86fdf814380bd0c5e50fda1573039b80e04. 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/NLF712100031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ebf37111946b2f5d09d51ca34e44389f1a8c6c0c69d928892281981ec178a3. 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/NLG3W2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72675c2fe9afa0a0b6b390e12fdcc8b843ccb936a77c8e385e348986f542dea7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLS762100039.