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 0xa528915259d4f9224bf71360a79d145e4b414ad1a0a17dd803f3bdb8f5e82238. 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/1f5bb5fd-ed27-484a-be84-0090c7a48fc6.json and https://artists.proofprofile.net/proofs/artist/1f5bb5fd-ed27-484a-be84-0090c7a48fc6.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 0xc56aafaf924c20a3586c4d2f526d7854fa549feb7876b34e2e52d9ba51994305. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TR1740800310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0a01f7acbc6c20247b0acc660a4d863675343a863af1c4551bebf7350e354b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/TR1740800215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af4641b10a23381a3edcc5341228fd765696c37190501390c4078a94b0bb9d7. 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/TR5890900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9696da9e56331f1fd269f731249c9588d1cbc58287651819627ac6afa12bb6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR5890900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a97c7348348f681c23b40fa7e2ca6df2c35dabd1f6ae9b083bb45d34dc1cc68. 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/TR5890900062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cae4940626d6a6d83916b153455765ead661004dfebc4ecb208db35484e0d00. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TR5890900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a878ec7f352c065fec110cb6d823210c33c29d5eeb667a0f14b328a8d7af59. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:00:59Z), 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/TR4591202639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x076be1a8cc8f86797d8bfdde79778594352a1db6731a7d44faf0359e1a981899. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TR4591202640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2041016f611bc2d6b64dd10e203dd49236207ebae428771ac532d250d152d5f6. 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/TR4591202644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e719e961d3114a0e694d80a0020015df6408a90c273af7ce781b0cecb37573. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TR0441414602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1e333bd3ec1096206d55145ce0c7e5364047f7b0c2cee913e7b039e4229c9a. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/TR0441414606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507495fc614637b5129b2cae1c01b75d02af76174fa68b2d413d469c1d1e4c2e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:07:17Z), 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/TR0441414607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5b0be5781f1a97d1be5dccae1bba868a45e03b854deff80bf815a5cbb9a09e. Chain 2 (Bitcoin): anchored in block 958681 (2026-07-19T06:14:54Z), 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/TR0441414608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe0d96dba4c8ea76ba8095ddd8b3b0824ffcd31980da8e3a648362907a3e634. 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/TR0441414610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f94de5bb6e5ac6ff034bbf5ae09a87c97b6e8d89af68bad8fb5febe89543202. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:06:09Z), 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/TR0441618401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a91fbfd5dc39b7014d217ca070e39d28d1872d11227bbb6ff387eadad5c9a88. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TR0441618404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07a5c56468a9efa3a9ace3732668014543c2ec10c9ecd7998f564dd95e6540f4. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TR7801700145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf179dfb0922a21b318430e581147ab0a5985c73db2f2c4eb653d4e6616e6e14d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TR7801700141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5614c7a137e2613272c55c101317542b7cfe478dbe8249366747feb84e4a0. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TR7801700139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b9d8dbb12b1e4ae0d3e7c56c71102871cd76e85055014a0276f3a0c767396de. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TR7801900131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02008b336394a08b1ebe6ab31ee571e5de17dbe93582976d7450469398b8db1. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TR7802100251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ec448d2f8f051b97a789fa2c17a990d6f246f46e4ff8e913e9edec82f65145. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/TR7802100252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcebaafade1fbf4ed66d881f94362aa3cc7832ad7ce59d8ca99f5ca6512fd327. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TR7802100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ed1b28ce6e1e2c7ee3f479438a16bbda37ff27711837651b23ca2184192090. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TR7802100257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8133c4d0bbedcf5091a0c3358b9ac330a8f490044233e9eaaf17c4dcb0a4dea0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QMDA62232556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f313c0b410b81f4100d58b9f8201513bf0f3725ffe14d0d8b30204037017d42. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM6N22307201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf050233b188e6100c51667bbc96a6028b687c4dc5aa6005509c5f63d9646be8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TR0442329301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345a3a3765fe45e0c0c1fae322fd3c6e259acd4f99916b62d68b01d03351793b. 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/TR0442429503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0d58ef11b039deef7bb176068e761fc3ce9d298c378e5b15ca6b1e770a1e01. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/TR0442429505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f313c0b410b81f4100d58b9f8201513bf0f3725ffe14d0d8b30204037017d42. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QM6N22307201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x592b110b50a0a82aae1d3c6d7032efa313d8f84d2429840b1098fe6188037b6b. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TR0442429506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0d58ef11b039deef7bb176068e761fc3ce9d298c378e5b15ca6b1e770a1e01. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TR0442429505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19381602ff03b4bce4cbb5b1508baf040aa26e0b2664566f4e8aff72ea0931cc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:47:54Z), 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/TR0442429501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1250085f2f99906c943c39344a215efba685bdda12b873113cc7085fad19830. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TR0442531501.