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 0x56895762ae129bc3600304e40f67179f6d4e3dd99c06c24ab994915e952a25eb. 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/718e9523-7d90-478f-b435-4f6fe06e068a.json and https://artists.proofprofile.net/proofs/artist/718e9523-7d90-478f-b435-4f6fe06e068a.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 0x3fbc9b5008a8625c9f2fc67176551573450852b9bf1d33ee52086e40a383019c. 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/ROCMA1002539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963f7c3bb438dec7ee6a91d02c4f5e1ed824e0f87b60ade0541d4d62297a63cf. 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/ROCMA1102631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534ec20a96951cbee756034e2fae6a43082ab2cfe709498303b46a9ac1122a51. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ROCMA1102639.
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 0xe84179a53c25226a032c6d37bb0fb434323545c14ef1948868e9ce6277c016de. 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/ROCMA1711333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7945bdf183a1f8815db9f75f1a5b0467ec5d3eb8c74b5ab919b5f9e6b79bac. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROCMA1102799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8201f20db36b66cb4912a746d157a0d0a205e579cedff49a2c51a5370994b01a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ROCMA1102860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf6e08569d8f3e52a91de29c1e851534d8b964722964610d8f15272340bd23ff. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ROCMA1208988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d53004a5f04df919ad348fcb5e7a45b3f7aaab995406165e179f7607f7575e0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ROCMA0901578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b6495836dbac98d1b9d81efef08c738adc3b2fd088d3d737bda5e5169e686. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ROCMA1610903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05c3e2996e955e354128ceefb980c686c344597ea728b0748cee2adf23ed1f16. 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/ROCMA1002430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcb92fa1531a960cf8b716f775645578974979a9033779bdae6d87d636db4bd. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ROCMA1811644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0994071191478f04afc1fc34e4d2872be0b5329269a7d7e6cc1ddf0c8e2ee6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ROCMA1610729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc56694d3ab1a2477ea5aa938a33a0206f8750a7476f690a22c1e30b9f217c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/ROCMA1208968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7780fc6cfca277cc4ab8e8d5c4413c6074c07043c837e5307d9f9f2a6bf33446. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ROCMA1610618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8644bab5a66b86ff663dfc28f0dca3844f2655e1f13ceb433e63585c662cbe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ROCMA1208863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x748f3b6639b3d01a2822f2aa6d169cb69787c92a773b761f2b758e924acfde61. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROMSA0600487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275b0c094070d3c5b5c55447185a9b05e92ba1dfdbc8390481a1a2d1a25ca587. 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/ROCMA0901772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7780fc6cfca277cc4ab8e8d5c4413c6074c07043c837e5307d9f9f2a6bf33446. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ROCMA1610618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0b7b9ee6aa07f66bd6dccc3f343b528fe348e21652d065bfc585284b4db266. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ROCMA0901934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dfd87c824878931ec8d95643b110363320a3d45b811e6198835a3c979c4f7d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ROCMA1002158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abc56694d3ab1a2477ea5aa938a33a0206f8750a7476f690a22c1e30b9f217c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ROCMA1208968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c4270656df86a473ce227db6da5a0b12e48b0344791d20ccd398579f719ff2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ROCMA1610775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1d6790af93146f356417e77c5e2dd2b1988012a85ef5f6600fcde8114e6805. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ROHPA1700234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf118ec09d6ee1c9a968c50b2bd1aea1642b9940534d66b4bf2050beb1c9b9fa5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ROCMA1102961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd257ae003bbbd85f7c378307d98dbca2fb904d2a9ea5ce5f82a191d53c954137. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ROCMA1002190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0994071191478f04afc1fc34e4d2872be0b5329269a7d7e6cc1ddf0c8e2ee6. 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/ROCMA1610729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fd3b4057ba831d184af564000ee37d29cabc9cb1adb9c2db7956a242d2bbd0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROCMA2413350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b435e033a1c32e0b39b4e91e9c855d5bf1d0e05ca99a1d4c52761aa4241747. 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/ROCMA2413351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fddf68ec5a1499d742e8b5523dc4e835b867c59041b5f753ee4301b2af0bee. 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/ROCMA2413352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c10e6053239ea0923d8d1173b4884e196dc8543c15e0977d34ef2892029a767. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ROCMA2413299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c08fbf192a2d9f0ea2279e288586b2f14928f1ec0d947d79754e722ab9e568. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ROCMA2413353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21895c43225365f70fefacfd9a3fbf5368d5c64e1916648d908d0ca7ef01df60. 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/ROCMA2413300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f1689b56b2b303f84d5a8dfa544fc87627a3e0f3d1d4c6813e5fdcc3f954273. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ROCMA2413355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabb548fdc1236162582ed4a1aedd7063d3f5d2848fdc7de3eb645155eacb0c3f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ROCMA2413357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1644c321ee23ca075a237622df17eb1f1d1718829119cc86374fe769156b9f31. 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/ROCMA2413301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f1d2bfc0ffa43676c98c4d3966fdffd385b6c355dd971a8707667532c5f853. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ROCMA2413358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7492bdf59c97e42ca99599b14a0d25245613873d0f4d7f307262fb638a52733d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ROCMA2413302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887ad69b6b33ce542b099a320ff79cabd7a7935108455a67612a1569d98f4fb. 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/ROCMA2413303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2967f3f8d451fde254be8997bfbf7ee6129eaf0551b305588833f477c358839a. 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/ROCMA2413360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eff706eefd8ed6deff498c914b6eb885980191d87219613d64c2661e1bfb69b. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES50A1100089.