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 0xad4da9764fc14b651cbb6e19e47de4095e2e48cd85f613cb40867274794586bc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2a83b9fb-7de2-404f-bd18-a83441a5b7d8.json and https://artists.proofprofile.net/proofs/artist/2a83b9fb-7de2-404f-bd18-a83441a5b7d8.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 0xc4010c1d57ba45b46ea6f6332e1fe79da9afd20c2194600b38cd77b2b400d749. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T14:12:28Z), 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/NLW2R1708279.
Mag Ik Dan Bij Jou (Feest DJ Barry Remix)
Mag Ik Dan Bij Jou - Feest DJ Barry Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ebc92552177539d65fecb0c93377d351a1cd09e5d51a1bfa49abc276db3dea. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/NLE871524001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791c13c9d0e88f88df195fa65842921b87006b8f233fdd1effc410723c131444. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFZ32203575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791c13c9d0e88f88df195fa65842921b87006b8f233fdd1effc410723c131444. 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/QZFZ32203575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9972e878de527772e90df6183891a8eb38907bab6e012ee9a7ec4e53830b9f82. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/NLE871711801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47df314eb29641c77f9a01d55e112321182f4ef908569261e80ffa625a42146e. 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/NLE871711802.
Ik Heb De Hele Nacht Liggen Dromen (MGM Moombah Remix)
Links, Rechts, Voor, Achteren (DJ Maurice Mix)
Links, Rechts, Voor, Achteren (Barry Fest & Skoften Sloopservice Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd6724c5506b34e0c0c2f35210478041c631e0dfe1af5cf22800c2592e22c45. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/NLE871611401.
Ruitenwisser (DJ Maurice & DJ Barry Remix)
Ruitenwisser - DJ Maurice & DJ Barry Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe86ea72cc15dd44a86c0a13287c0734a3354b840cf6c853583fded2864354138. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/NLE871611701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6637e8a74fe56c029b26ab24cc9f104d6aecf23e95086b44632ebfca92747d5. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/NLE871719301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b243ce074726420bf4416afa248b7c77c8b6676f0bd9862cd1ddfb873c140b1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL7HA2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b243ce074726420bf4416afa248b7c77c8b6676f0bd9862cd1ddfb873c140b1. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NL7HA2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c9252f69eb01c3c38115e0f668ec303f6860b4b8844468eef2d98fab4710b61. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL2QQ2100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f5becc8f9fbd5919efcfa450466a7f4b9d80fe8f9aadc475ce77485032ee4d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/NL7HA2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58a186b9297dc55a264bc90b7b1ba3c0a4251fad263321ffac682d56308a9d7. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/NL7HA2200021.
Ik Zag Je Lopen, Je Was Bezopen (Barry Fest remix)
Mag ik dan bij jou (2nd Bass Hardstyle remix)
Mag ik dan bij jou - 2nd Bass Hardstyle remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ff0317bd2cfd3ae03c1134e1f32f13da17330e5515bba10cbacd12820b8f88. 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/NL7HA2400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f31dc1a473c4b0b2e1793b3d3c9b35cc5e8a8da1263152d87e4fe81e70ec92b. 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/NL7HA2500002.
Rodney ( Atjoow! ) [Barry Fest & Anguz Remix]