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 0xb798fd2936e9675e42bb59907f3b144ca759a093901e08f7f44ebcd76241e001. 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/4475aafc-a213-40c8-8591-b054bcb8e57b.json and https://artists.proofprofile.net/proofs/artist/4475aafc-a213-40c8-8591-b054bcb8e57b.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 0xee9f44904d25d31f7db439f39737ac8343566f0c5e8a6e32a9e2c4fc8f19be05. 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/JP92L2203780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164edd77d49dbd1db680584425ee61ca60e8928010b6abbda43d4c243e60e12f. 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/JP92L2204150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d3afba3543ee43bb4339c9ccf1db0dee80f7ef3d2c8f2afd37340bf1e850fe. 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/JP92L2205790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393294699678ebcb5e7c1725e9d13260760ffa16c774a78e9567ca2f60dfef8e. 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/JP92L2205800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc0c55db01e410c26a4da0ecfcbb150327e6c666d412cbb22688aac2478fe3. 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/JP92L2205810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc2c32f7bb3a988c2faad59e4a0277346f763fb2ed76b625129efd491dfac58. 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/JP92L2205820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c8f8b018cfa86751b3a930dc4b98f0b972ece27c19c803c00633c246cb20ba. 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/JP92L2205830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3a88085401879a3b5c5ab2eb9d2d43e9c0466d1204fb6565651c7c936c66d. 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/JP92L2203790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b37ffc149a3d528d9dc09a134d2e079a946f72d5c71cfb309a67b8b94ac3be. 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/JP92L2205740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4f8060743d869925e175113f748c5e91d030a734f2f06a5f9d1cadf6568e22. 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/JP92L2205760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dbf24c289e6d34ad8813dd1f39bb8a0a0645754c46ac40c51f82b6fe7a83c4. 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/JP92L2205770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4720a3d9b3d2a4b32bceba9a86128b03e68d9c591e75f1528c66da80d1160537. 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/JP92L2424410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfc86c8f0cf814f74369cb6ad77bf2d09f99ae236b15f18339059a8caafd8e6. 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/JP92L2423970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304f38670c8fae61d73042b844c77b6306c3abb264cf9430733f0c945f63d300. 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/JP92L2423980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164edd77d49dbd1db680584425ee61ca60e8928010b6abbda43d4c243e60e12f. 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/JP92L2204150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d3a88085401879a3b5c5ab2eb9d2d43e9c0466d1204fb6565651c7c936c66d. 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/JP92L2203790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9f44904d25d31f7db439f39737ac8343566f0c5e8a6e32a9e2c4fc8f19be05. 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/JP92L2203780.