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 0x8e36725017693ba9254e0a33f6622d9b02987530b4f25fc66193bd2173626ff2. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ddb10d5-ec24-4242-8b8e-820bf036c21c.json and https://artists.proofprofile.net/proofs/artist/4ddb10d5-ec24-4242-8b8e-820bf036c21c.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 0x6f0ba032dbf29bf22f3895a0e52beb255b9df475a19be810f7f0e5104859123f. 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/RUAEJ2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025e67fc4bd4e237faebd68ec00ecc4b7f4544720490dbe3414a47ae8fbc8826. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/RUAEJ2200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034955de48f2eb427bbe5ead397d4cbac8e0225ed6adeb7d58136534a8dcc0ac. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/KZA0S2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f98f2d723b5016c6d1c94c131c3ebc1f6d11fd5d89d75c864ca85dd472a1dcf. 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/KZA0S2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f98f2d723b5016c6d1c94c131c3ebc1f6d11fd5d89d75c864ca85dd472a1dcf. 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/KZA0S2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cefb9749d563e671dada37fda034dc49dffc0cc9910cc2278215d2ad94eb9e. 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/KZA0S2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db99ca7ae72de201187b9a30cdcb7312dbc986ebe06717a02012385588fb0d8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/KZA0S2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ccb0beed541e8c83f0ebfe963e54c65aa759a3fcd95f74ba848e38fa6e2bf8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/KZA0S2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ccb0beed541e8c83f0ebfe963e54c65aa759a3fcd95f74ba848e38fa6e2bf8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/KZA0S2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ce896578a3946fd1e051e104446a9acba23f886ebed787756cefd940279722. 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/AEA3A2401614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426eb41a4634c2b09176df4651f53e06caa365c29172dd8ff04203fcc2704fdf. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/AEA3A2380780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c04ce9aec8298d678e0b163c015a173fae95b9a74cfd2c07ee51f17669b5c4c. 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/AEA3A2363334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf039fb943c7e84d5e0c89cc5c7dbe4a23d63b69efc05163c7df38c790bf5582. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/AEA3A2232754.