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 0x22bf785179768830fe372a55a58600376297d6c10e022a126a8a35d0fc682e78. 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/65681eef-1d24-4b04-9d57-bf84efabb517.json and https://artists.proofprofile.net/proofs/artist/65681eef-1d24-4b04-9d57-bf84efabb517.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 0x18006fb719c2b3b1343945553b41898adb4fe48ef54fa9ee0c791dea9970235e. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T11:44:03Z), 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/NLF711102321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2b33f0501d911595d7c391a3426c497cf87f9543ec38f25055bab772bf6206. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:17:44Z), 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/NLF711202928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0025df43210fad02c962be62d2bff3ab0e44de58eb05ee051648624000e1a628. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:24:29Z), 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/NLF711505831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf053c3ef153041f07f095faeeeebe54c2b42f42dc8851d0b293b45a13512476a. 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/NLD681901091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a8309afe6f68d857cc044288ca2aa72e04b261052306111933df06dbe49270. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NLD681901192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3e81bfb099278a052701ae1d39d85f996d41db0c02dca9bf3d4d837615b5a1. 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/NLE712100128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08364e90d72ecd216f07800ba136c6e40c7082ef98afb8f5387ae285ec98a4c4. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/NLD682101634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f81be51ac20e94c9e83979a8e18f09d62c596838f5afd79b53679c021ee7eaf. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/NLD682103206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62b320a14364621eea85197b9daba04cea6d9714885b96d924e74434a752208. 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/NLD682104109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeea5b4fa164b48e0923af982faeaa8925db60a610c9a1bde13642bfa2f944a6e. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/DEA312200800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd78cee07784ca754a527f1f827245821d93c0f8b4cb8fe1f8647237770efb09. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLE712200783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b34bbc5ece3033894eb7dfb0af9cb69f75a66cc4494d590c60558e5f01aea40. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/NLE712300653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ff1edff511344aa902b80c511c56d52e0ce223c21da7639b1a38ed9486de3e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:10:31Z), 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/UKRMQ2301224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a16853da20e6553c9ad87f4a8f3ec8f32254b06fe385f0c821487ba9bd2971. 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/GBGWM2420369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24970513c05f2035681df7d30ba9ee4c3d85c75c1a832ae29b96eef475e8989d. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NLD682400428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ee13bf47038f897954e370626aafe3f468c87c3b599f31423c77ba854799b2. 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/NLF712501613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ee13bf47038f897954e370626aafe3f468c87c3b599f31423c77ba854799b2. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-02T22:05:07Z), 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/NLF712501613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8466b62971b41df7ad4f1b3c552bc6d9e4acf01ebfbad1edb877d4c50f11de6. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/NLE712500420.
A State Of Trance 1000 - Celebration Mix (Mixed by Armin van Buuren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbefa27a15f42a07dc68b2b568254b795d38c86efb0d7707cc51aba649c485fb8. 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/NLF712100487.