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 0xd41295371f9312667c6eaeee8381389920c1052050092b249d61d078763b6d4a. 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/df3f672f-9573-44c4-ba7e-f8d9a9bef8aa.json and https://artists.proofprofile.net/proofs/artist/df3f672f-9573-44c4-ba7e-f8d9a9bef8aa.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 0x015172d44cf72c9335c3e1ae0c56a46ede89fc09e3039c02fa7aacdd01a193e8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:52Z), 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/INA5F2201476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf77e9d2973b02b0f932305a24a594f3e1701680d75315e95ce37ba24d365b9. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:39Z), 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/INT632100055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4157248b39065c153676af4cccd2fa25bfef005504a23289f62b8a4dea84fe. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:59Z), 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/INH512011105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa86ff6a59c1310e942adbcfe34daf39659908fa8ed0d7e11ba2f99b0b2e64bd. 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/INH512012390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01568ddf1b5ffe359b77528ecdb190661aa02df86259a0a10ef8fc4b41be70fb. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/INH512013187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a91f370d4fa805b89b0a28e71d17c2bd82ff246cd5d47f2ea5eecaed6c568de. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/INH512013606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0391ea12c0ae5b3107b8dc049707df4c64a3383a55b88fc201bc1f9f5aea53ff. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:34:12Z), 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/INH512014389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5977cae9176065832de1e90ea0cf46cadb6c13dd0e3bcef16a3e4922c552a24. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/FRX872398143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2555726f518ee4eb15ca8db2d67560dea494588d02468d4b0ca618f98cd492f5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:36:18Z), 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/INF512300302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8afce773bc7344526c44f8b8b0e35a30cde73ef0e561b43c327de4f480183ba7. 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/INH512015552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bde5ee67996ce271ed6dc27b08c5c895ee9174fcc674f9e790cc9aff2b3fd5. 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/INH512016027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685de146af190dad0bfc0c30881427dd2618029deea683c136ddb04705cb70a4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/INH512016377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f0c5079e468d35a03efa1e72af916e5223db18d26290e5ac409489f0527388. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:05:05Z), 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/INH512019772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be0cc607a6c9de73bafe17abace9f681c5dda059522bc0bfc1e5d7c0125c32c. 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/INH512019942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf9a8f39debb5dd5cce4364b0bfa0965c5aad31d79bd531d1f5ad0b834e68cf. 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/FRX762418011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d6ea13004abfbbcb6df57211f4021ef36697da060905e422e17c38594b14dd. 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/INA5F2304181.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c2585eb1aff6e9452842cceed44f10f596a77d6314960f72189a6f4ac61b5bc. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/INH512023114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc24333147736f11b8cf2d4b7c164ea3b3668d2a945b67864ae222fb8085bac4. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/INA5F2304485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3f8f2efdb56795f385bbc11e24551b97bf0b8cd26358313f55d9ef1c00b946. 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/INH512025131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4583dad5619ec45f10bad66c5ded3813741ef8e281bcd157c2a41545b945f413. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:20:00Z), 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/INH512027125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe650fa527c1361eb068fbb30ae4c7d18db2a763207159c76efa746366402aba3. 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/INH512029177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acff60cc8d1eb04f2d8421dae244133c000f932157446a9b3d2812431c56b15. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:13:44Z), 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/INA5F2304625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36786dea16c6cd4e71ff4b0b7275832f888effc0fe8a9732c70a4d2c25e0b7f4. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:37:37Z), 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/INA5F2304635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe555ae3a94b717797acd0a42ed7de915c2282abc0cf99558a2849fd1c5ed11ef. 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/INH512031026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02daf3e968cbe16994029f4257211c31ea11d3381c41ffb87475d002fab35f5a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:43:22Z), 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/INH512031139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd34bb6d70f6b0b76604de9f5ceac076be237f5343b93fd5b3b85c9575fce3fb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/INH512032870.