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 0x5146996689c49789699438cade92b6a2442dd239f4af2e9e0253bd97ebbc26c8. 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/123bfbf8-2959-4681-bf16-e24ab1c2116c.json and https://artists.proofprofile.net/proofs/artist/123bfbf8-2959-4681-bf16-e24ab1c2116c.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 0xc363f1b13b75fef44703414e07cc8229c48e7e20f19b6ec4a6288405946018f4. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZPLS2430614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1b06c6d7480da55b79b183e1e62de5676ade901dbd3532efaf234c39b365f6. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZPLS2430622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa6fb81b780cecd992849e5c00cf83e08e0a51ee023d204259636d5e3a80048. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZPLS2430618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd8f326fc612052706689fefd244051051e3fb827b316acdaeea5be6a8cac7f. 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/QZPLS2430619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c3b84059ccd1afa244057269c0247c6f2899a99aa0623f429560000c1e1577. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZPLS2430625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f66c708ce7fcd716cc36b0209796fb9e6474251257bc2ace653d2a5bcd1f1f9. 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/QZPLS2430624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9406501b2399f7787914484bc4b1a60ad7094a2241fbb57c8ea207d08b88e7. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/QZPLS2430616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ac2fdbd73753ba1ff8dc40c628fea9e4d5732061595df0ca53d20bf3b59013. 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/QZPLS2430621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ca8f0cf7f1dafe6126d0daa59758d90108928ec9e3587f01c8f06dade61534. 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/QZWFG2400325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d1aefe5eb2a9d2b08462dd8178fd9b60281bf16cc8b20896b1c95d36ece598. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZWFG2400344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa321fab699a16ffbd53a2c8deabccbbb840acc8361769a2d841bd41ef408cb. 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/QZWFG2400326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d8ed620b442484d59bbc73f20b52b1face9cd914d1ee0012844f7246f74631. 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/QZWFG2400335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f9e53ec916a8bb7ec3aa87f45821d1cbbf5d3f0de194a6268a8204c1268681. 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/QZWFG2400327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa40817fbd437319e71bb8e9dda5c5b7e7564065a2f9874e95270cf7d99332f76. 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/QZWFG2400330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0943fe997f62f8f62b21e9010d1d2a26dc61d29789dfb2e8a0f99f38fbed4e. 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/QZWFG2400338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1ea999f5ba8ee67b0f747622bc5c79537b5729c71262d274b1eac736fbb2e3. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:22:40Z), 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/QZWFG2400328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e93aee387c781bfe1c37a0ae01b9984c7a14ef78cb473df41088c418133ad4a. 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/QZWFG2400329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dc023e6cea5cf9cb310cc52943e0c3354c34cf393c3091758a4260aa5972bd. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/QZWFG2400331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289dc24c52e29d52e271e784562d8b59530e4a893f968ff630205b09b63243cf. 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/QZWFG2400332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1cead3ece33115eedeea149276e0f33fe4c2a5c988400da5cb2facda540f5e. 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/QZWFG2400333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e25dd872ef941bc98f717ccc3ced01b607669197b122032e61ce61a1b2c978. 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/QZWFG2400337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f02b3e86efe89ece5485e31a6ef163eebada00c6df399f9e8e6954be6ad7299. 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/QZWFG2400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e18c25287e0855e0c156850556e404a293450262db51ef1083a3e9ac03ef39. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZWFG2400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0ac1015b38785c4f7960dddc42f81cef3d9934b56482b21f669e69fc32e936. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:17:51Z), 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/QZWFG2400339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23fbf9671a6f699c4cae2f66d362a63a721780bc47af870ab5d0aa2202d1e11. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:20:51Z), 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/AEA3A2250609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde71942c89a896af66ca9806d6a5b9df76838343fceb3706a4f0482a8b3d9be. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZWFG2400340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4662e6e9197c1b8e3571c06280e4b4901ec356ef03b5d3b8111f42e1324d1580. 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/QZWFG2400342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7367f893b88ae4e4a84e91cb937229570e3ec701d936c5b69d52aae523b7ba16. 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/QZWFG2400343.