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 0xf8bfb0391d8bbfafef70d3b2dd9196d01695ce22bb1528b376d70b69958b9d69. Chain 2 (Bitcoin): anchored in block 954050 (2026-06-17T05:14:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4301c8fc-8861-4df5-8d7b-0ee43941e0cd.json and https://artists.proofprofile.net/proofs/artist/4301c8fc-8861-4df5-8d7b-0ee43941e0cd.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 0xa25a48107d655b5b227328762a0455a75565b4f87f9998f3337a607082cdc66c. 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/NLH3Q2000730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbec384012dc5cd51464768e836e7b520f9aa648eca2f209194656186eb9d687. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NLS762000299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f6c9067006374914cc810a370f12e3c7d57e101714e3c35f1e4861dce0ff927. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/NLDD62300060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d25fa3303efb159161a72bb625fbfb79cfff80c2af8c92e81be873a200971d. 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/GBKQU2227521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1185fdef7989a9a208a18ebf1c2f56e808c551daae1089dd1a5bdd86b32d79. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/NLC202100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d4c32d6bc8435dad76977f40d677cefa56483afa5faf670e86551bc0bb2f48. 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/AUXN22028125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649e475d55ce56bc2fbd85f70878b6dbccbba3a0b21e5fc72d271d1fea267090. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DEL712100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb179cd704160780895298b5828da9d4c82d98d4ece98e99152f68f3f8d13fee1. 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/DEL712100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905cbf47c46935fef42ef89d43fe535ec2e138aaaa4f232540501be011382d42. 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/DEL712100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fc1d52d2b714ffbf93c10a60b923df18bf1df1d47cc6db6adfef8210cc00c3. 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/DEL712100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98bca8577282bb6d499e8fdb296c469d920dd48e0eeef53d8e2218f658ca3fb4. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DEL712100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b64c4d0311261486f6ad62dbca55008b88535649632214719103a2139ba6b1a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEL712100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c680d8e54dd406b9d5a80784fcb0c023b9bad87099e0aba01c3706946bebb12. 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/DEL712100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc8cc03c9ed3a012f32197f38a2fa150ff97c0fb03d33037e41a127b7bab5d7. 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/DEL712100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71748e29e9f35854276c560703e56ea8a90bf5b682f2afeb416a0d75241cd7f. 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/DEL712100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca9acf6b4af9388570ddb027286f69e1142ffce619ad34b4606483da9eb53e2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DEL712100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fca1087ba3d1ea36b348ccf688f71ae551e45725e71d925d153eb0ba5effc03. 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/DEL712100025.
Wildfire - Adaro Remix Radio Edit (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e842f19114b5757eefa3c993e74cf913e282a052a51e03bf35d35b11125e22. 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/DEL712100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd681cf939f226e1b335b718f1e91f547421edd7fa57de61a86af5ea6656e880. 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/DEL712100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14906f39b1181852cdfe66dbc15d6cbf6baefc463ab5a6518cdae26a295814e1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEL712100038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fe32286fed3320abb7c22d437a8cc781c93d2109c778ca5843ba2e5b501b84. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEL712100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f2f1eb1ac0a07a153ca20bdd9da9f5e68e0d96a5d89664eda640ce87cc398a. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/NLFL72000680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e286830bedf12d8fd24e61b2f3428eb9afcca2a1e4ab4586bb7afa40246729. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/NLFL72100024.
Heavy Hardstyle 2021 - Fire in Our Souls
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eda310131870d357c4269f830524911ee7af1b092629ce3d40afc00e669abd4. 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/NLS762000449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa141326e0a190244286ab110a6cc13be5270422d3f26ac18a07a1544fcf89fc4. 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/NLH3Q2000748.
Hardstyle Force 2021 - Dance with the Devil
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d13f2a8d8c6a2c161eaa310102a9555b188f9919f15f51d72790fe6f4ff2ec2. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BEB682100082.
Hardstyle Hellfire 2022 - Rave Is Our Religion
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4afe69727621ffc99265312c14fe7f56eebb1ae0f72a8f80139c6054886161a. 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/NLC202300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa141326e0a190244286ab110a6cc13be5270422d3f26ac18a07a1544fcf89fc4. 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/NLH3Q2000748.
Hardstyle Marathon 2021: Addicted to the Bass
Hardstyle Mission, Vol. 4: Ultimate Bass Attack
Hardstyle Universe 2023 - The Sounds of Hell
Hardcore United 2021 - Together We Stand