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 0x4041a0e97884e34377d22efee7408dcddef335340d0b1ab3586b570904eeee5d. 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/cb92f238-bdf1-4e80-9cdb-0eed6f2cfb3a.json and https://artists.proofprofile.net/proofs/artist/cb92f238-bdf1-4e80-9cdb-0eed6f2cfb3a.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 0xa9c01267b29048324e76376e81e989b9e62acb8d554881f3472f187a0721d683. 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/NLS240601283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e9a941a0e33f1064a7d0c43c72037ac284724cbd81691248f8f0ec50eae203. 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/NLS240601304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ded094e670178b05e3c0c97ad95778508d261c93ea5adb6a2679c3179719f55. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/ITD130400389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958ed88d2e0f19d1569e911d49d2e3769733a3232523fc90c6c720085d1e38fd. Chain 2 (Bitcoin): anchored in block 958660 (2026-07-19T04:21:53Z), 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/NLQS91100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdea3f44c3b849f6abba2a6767f24caf593986bc4988288a705fd75e9cb5e5a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLQS91100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf22a64512885861d35fcfd35591720ba1897871d78ded5521859d9b489932f. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/NLQS91100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f68b82b13c25ae33055dfb3da3a3f9262f6ea1bab89663c1c593e606d45ef83. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLQS91100058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cf1ac2e79666d4da7b23442080d5cef923cc3bf7fd27aff9b2c1c734c2be7e. 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/NLQS91100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ce808ba9c1f8345fda6a0e498ce2c6216ab4a6b3ceace61ca04c6abb5cab57. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NLCY30802693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c924c86e79ffe0590ccc9e14b79d1706ce772e2d22fa56bcfedf252d60cda8. 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/NLE801100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9898b08ff5bd77ff176477785fccd1c03cdb9cd47462410cef24778dc95933e1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/NLQS91100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b9ca25571bc15ae7c70be1f18486bfca51e5c19e6c5947cd950de9b03fc94f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLC050200718.
Nothing To Lose Vol 1 - Full Continuous Dj Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f3ad481851d964dfe47bb5099e7cc2ecb5433b80342226ecddbf4e9e2c4ec9. 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/NLQS91100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6199d9fe50cb8ae0e12758398e3732eed1e350f03f8d2c937788eda2cad8351e. 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/NLQS91100056.
Hardcore Will Never Die - The Viper Rmx - Edit version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda861e789eaf7e3db4bdb3715b5e7f607156c31753783b8ced47e4c8fe2e1ed. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/NLQS91100078.
Burning Love 2011 - The Viper Remix - Cd Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2bea0c7d7b85b3cbd0f1b84b834bb4666cc01052e5474165cc38d3cae388fb. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NLE801100492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1c64473c190aa65ea85423d32b0a177ece4693888ce59a1afa987dc7de7d66. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:07:55Z), 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/NLQS91100051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9ba21b5c1e0b89699903d3318b9cad73363cb43023746ea61b399e9d22f403. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/NLC050300053.
Intellectual Killer - Nosferatu & Endymion Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x833ff2a7c20240427e4e2294694a69455d8df5ef91d2ddcde5648c1257191367. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/NLCY30800658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d2c6ba91e79a1c4556c45bc0a77146a791f384ff94ad5ad7855f50f381687c. 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/NLQS91100057.
Your Smile - The Viper Remix - Cd Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dfc3f304a95eeb909215d83ad811429d687bace2446763d0f0034ad701a022c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:05Z), 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/NLQS91100061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbe17bbdd0126464a7cb3d818bf4f46d54196abe4133084f47e08e2c4d3aa8f. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/NLC050800041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22df0ad8864c9f439fd6959c10829ab2008cd5880bb86be7fa79634128602383. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/NLQS91100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19804f2fe8d55baf9fe5238e15460e5259661e707e620a923894032eaf5be6b2. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/NLQS91100074.
Vlammen! (A Foolish Anthem for SSZD Kingsday 2017) [Radio Edit]
Vlammen! (A Foolish Anthem for SSZD Kingsday 2017) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455d8789376a187ab5e5623430eadc9aa173871bcdeb02608e22104a4589d75b. 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/NLQS91700067.
Vlammen! (A Foolish Anthem for SSZD Kingsday 2017)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaae2aa902aa826f4791113bb10bf083bbaaea1354d32df583de5d6889e632b15. 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/NLQS91800059.
Wild & Free (Official Free Festival 2019 Freestyle Anthem) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020754ee2ad5abd977de2964643bbdcde5cd1694b1615f9fd76f06d98fa595b4. 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/NLQS92300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8880a1bdb43d7517b2a519939a4b11d86d09d39b4b609736aa0c070f20a8d907. 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/NLQS92300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c698edee50087659582eca730637fc97958d43545da031387b51c61c90f728a. 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/NLQS92300089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aea234e8060afb09dfa31eeccddf0f576a08a570d07dcbaf218b2103abaf755. 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/NLH2L2200322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9ce808ba9c1f8345fda6a0e498ce2c6216ab4a6b3ceace61ca04c6abb5cab57. 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/NLCY30802693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbf5a40590def7e87e1d68484a6435e4d9026dd130edf3c2dc4c35c309c97d5. 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/NLR1T1800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1841340dd3c332ff55e4b61eee44d3313b243a157b1a215334ec7ba556f949d. 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/NLS241202439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdabebc223f7d4b633b014ae631ec4a76cd51c4a164f4fa11df66b76c6aeee2. 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/ITD131501433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc4b4bdf4d7ec43b7ecfdecdd18fc250119ab807a406d3a5c53da3fe00e76fc. 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/NLS241202457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2303a927ae5651fe707854da91da2c8d144b5b8541a0af86f701f0c18e42322d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLCY30802457.